Science.gov

Sample records for agricultural applications student

  1. Biotechnology: Applications in Agriculture. Instructor Guide [and] Student Reference.

    ERIC Educational Resources Information Center

    Nevils, Aaron

    This curriculum guide incorporates the needed components to aid agriculture teachers in the implementation of the Vocational Instructional Management System in biotechnology: applications in agriculture. The guide begins with a list of the competencies/objectives found in the six units; list of references and materials; list of materials and…

  2. Microcomputer Applications in Agriculture.

    ERIC Educational Resources Information Center

    Hilgenberg, Gene; And Others

    This curriculum guide is intended to assist persons teaching a course in microcomputer applications in agriculture. (These applications are designed to be used on Apple IIe or TRS-80 microcomputers.) Addressed in the individual units of instruction are the following topics: microcomputer operating procedures; procedures for evaluating and…

  3. Science Achievement of Secondary Agricultural Education Students

    ERIC Educational Resources Information Center

    Clark, Sara Vicky

    2012-01-01

    The purposes of this quantitative descriptive and correlational study were to describe the science achievements of secondary agricultural education students and determine if the number of agricultural education courses passed, FFA involvement, and SAE participation would statistically significantly improve students' performance on science…

  4. Secondary Agriculture Student Awareness of International Agriculture and Factors Influencing Student Awareness.

    ERIC Educational Resources Information Center

    Harbstreit, Steven R.; Welton, Richard F.

    1992-01-01

    Responses from 1,008 of 1,398 secondary agricultural students in Kansas found (1) limited awareness of international agricultural products and policy, geography, and other cultures; and (2) awareness increased among students with higher grades, longer time in agricultural programs, or involvement in supervised occupational experience. (SK)

  5. Science Laboratory Exercises for Vocational Agriculture Students.

    ERIC Educational Resources Information Center

    Thompson, Dale E.

    This manual provides learning activities for use in two vocational agriculture courses--ornamental horticulture I and agricultural technology I. These activities are intended as aids in the teaching of application of science principles. An introductory chart gives a summary of how vocational agriculture objectives match objectives of specific…

  6. Cognitive Potential: How Different Are Agriculture Students?

    ERIC Educational Resources Information Center

    Rhoades, Emily B.; Ricketts, John; Friedel, Curt

    2009-01-01

    Given the interest, research, and effort extended to help faculty in colleges of agriculture provide educational discourse at higher cognitive levels over the last few years, one would expect that students enrolled in colleges of agriculture would exhibit higher levels of critical thinking and need for cognition. This study thus aimed to discover…

  7. Agriculture Students' Computer Skills and Electronic Exams.

    ERIC Educational Resources Information Center

    Wingenbach, Gary J.

    2000-01-01

    College agriculture students who took pencil-and-paper tests scored significantly higher than those taking electronic versions of the tests. Those with a field independent learning style scored significantly higher than field-dependent students, had lower computer anxiety, and enjoyed using computers more. (SK)

  8. Agriculture Cooperative Training Student Workbook. [Revised].

    ERIC Educational Resources Information Center

    Texas A and M Univ., College Station. Vocational Instructional Services.

    This work is designed to help cooperative agricultural students (especially in Texas) to gain a better understanding of some principles that are fundamental for successful entry into the world of work. The workbook provides information needed by students to help them narrow the possible career choices that are appropriate to the individual. Also,…

  9. Agricultural applications of dielectric spectroscopy.

    PubMed

    Nelson, Stuart O

    2004-01-01

    A brief account of interest in dielectric properties of agricultural materials is presented, and some examples of dielectric spectroscopy applied to agricultural problems are discussed. Included are wide frequency range (250 Hz to 12 GHz) permittivity, or dielectric properties, measurements on adult rice weevils and hard red winter wheat, for the purpose of assessing selective dielectric heating of the insects, and broadband (200 MHz to 20 GHz) permittivity measurements on tissues of fresh fruits and vegetables. Similar measurements are shown for tree-ripened peaches, which were obtained to assess possibilities for a permittivity-based maturity index. Broadband (10 MHz to 1.8 GHz) permittivity measurements are shown for several fruits and vegetables as a function of temperature from 5 to 95 degrees C. Measurements over the same frequency range and similar temperature ranges are presented for two other food products, whey protein gel and apple juice. A few comments are offered on likely future dielectric spectroscopy applications in agriculture. PMID:15719907

  10. Agricultural aviation application in the USA

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The United States has the most advanced equipment and applications in agricultural aviation. It also has a complete service system in agricultural aviation. This article introduces the current status of aerial application including service, equipment, and aerial application techniques. It has a c...

  11. Involvement of Vocational Agriculture Students in Vocational Education Student Organizations.

    ERIC Educational Resources Information Center

    Gilbertson, O. S.; And Others

    The major purpose of the study was to determine the basic reasons for nonparticipation of California vocational agriculture students in the Future Farmers of America (FFA) organization and to develop strategies for increasing membership percentages. After calculating a 1973-74 FFA membership percentage for each California school, schools were…

  12. Nastran's Application in Agricultural Engineering

    NASA Technical Reports Server (NTRS)

    Vanwicklen, G. L.

    1985-01-01

    Finite element analysis has been recognized as a valuable solution method by agricultural engineers. NASTRAN has been obtained by the Agricultural Engineering Department at the University of Georgia. The NASTRAN Thermal Analyzer has been used in the teaching program for an undergraduate course in heat transfer and will be used for a new graduate course in finite element analysis. The NASTRAN Thermal Analyzer has also been applied to several research problems in the Agricultural Engineering Department.

  13. Commercial Pesticides Applicator Manual: Agriculture - Plant.

    ERIC Educational Resources Information Center

    Fitzwater, W. D.; And Others

    This training manual provides information needed to meet the minimum EPA standards for certification as a commercial applicator of pesticides in the agriculture-plant pest control category. The text discusses identification and control of insects, diseases, nematodes, and weeds of agricultural crops. Proper use of application equipment and safety…

  14. Selected References and Aids for Teaching Agricultural Mechanics to Students of Agricultural Education.

    ERIC Educational Resources Information Center

    Mazzucco, April

    The booklet lists references and materials intended for both the student and the teacher of agricultural mechanics. The materials are grouped under nine topics: agricultural shop; metalwork and welding; agricultural machinery; agricultural power; drawing, construction, and maintenance; electricity; water management, soil and water conservation;…

  15. A Profile of Agriculture Students at Western Kentucky University.

    ERIC Educational Resources Information Center

    George, K. M.

    Background characteristics of agriculture students at Western Kentucky University (WKU), the factors affecting their choice of careers, their goals and expectations, and certain agriculture related attitudes were examined in 1978 in a survey of 150 randomly selected agriculture students at that university. Similarities and differences with their…

  16. Students' Knowledge of and Expected Impact from Sustainable Agriculture.

    ERIC Educational Resources Information Center

    Williams, David L.

    2000-01-01

    High school agricultural students in Iowa (n=386) rated their knowledge of sustainable agriculture as limited. They expected it to have high impact environmentally and socially. Results provide a basis for curriculum development in this area. (SK)

  17. Entrepreneurial Intentions of Agricultural Students: Levels and Determinants

    ERIC Educational Resources Information Center

    Pouratashi, Mahtab

    2015-01-01

    Purpose: This paper examined levels and determinants of entrepreneurial intentions amongst agricultural students. Methodology: The statistical population comprised students in colleges of agriculture at University of Tehran. By use of a random sampling method, a sample of 120 students participated in the study. The instrument for data collection…

  18. Sensor needs for agricultural applications

    NASA Technical Reports Server (NTRS)

    Golden, H.; Neiers, J. W.

    1978-01-01

    The peculiarities of agricultural remotely sensed data requirements evoke special sensor requirements. Vegetative species do not possess significantly different spectral signature at given phases of their development cycle. Hence, the key to their discriminability is the phasing of the phenologic cycle of the subject species. Significant improvements in classification can be obtained by consistently employing multi-temporal observations taken at specific times during the year. The present approach to agricultural data processing results in extracted data equal to approximately .05% of the acquired data. This paper discusses the derivation of agricultural peculiar requirements and the benefits to the end-to-end processing system by judicial utilization and placement of key editing functions such as sample segment extraction, cloudy image removal, sample registration and the elimination of redundant data.

  19. Solar Energy Applications for Agriculture. A Curriculum Guide.

    ERIC Educational Resources Information Center

    Nebraska Univ., Lincoln. Dept. of Agricultural Education.

    This curriculum guide contains five units for a course in solar energy applications for vocational agriculture. Each unit is organized in a format containing some or all of the following materials: unit objective, specific objectives, suggested instructor and student activities, list of instructional materials, assignment sheets, answers to…

  20. Monodisperse atomizers for agricultural aviation applications

    NASA Technical Reports Server (NTRS)

    Christensen, L. S.; Steely, S. L.

    1980-01-01

    Conceptual designs of two monodisperse spray nozzles are described and the rationale used in each design is discussed. The nozzles were designed to eliminate present problems in agricultural aviation applications, such as ineffective plant coverage, drift due to small droplets present in the spray being dispersed, and nonuniform swath coverages. Monodisperse atomization techniques are reviewed and a synopsis of the information obtained concerning agricultural aviation spray applications is presented.

  1. Agriculture--Agricultural Sales and Service. Kit No. 21. Instructor's Manual [and] Student Learning Activity Guide.

    ERIC Educational Resources Information Center

    Caines, Royce

    An instructor's manual and student activity guide on agricultural sales and service are provided in this set of prevocational education materials which focuses on the vocational area of agriculture. (This set of materials is one of ninety-two prevocational education sets arranged around a cluster of seven vocational offerings: agriculture, home…

  2. The Importance of Agriculture Science Course Sequencing in High Schools: A View from Collegiate Agriculture Students

    ERIC Educational Resources Information Center

    Wheelus, Robin P.

    2009-01-01

    The objective of this study was to investigate the importance of Agriculture Science course sequencing in high schools, as a preparatory factor for students enrolled in collegiate agriculture classes. With the variety of courses listed in the Texas Essential Knowledge and Skills (TEKS) for Agriculture Science, it has been possible for counselors,…

  3. Urban Agriculture Programs on the Rise: Agriculture Education Model Can Reach Students Other Classes Leave Behind

    ERIC Educational Resources Information Center

    Fritsch, Julie M.

    2013-01-01

    Agricultural education begins with hands-on classroom and laboratory instruction. Because agriculture is such a broad topic, schools typically tailor agriculture class offerings to match the interests of the student population, needs of nearby businesses and industry, or topics relevant to their state's standard assessments. Within most…

  4. PREPARING STUDENTS FOR EMPLOYMENT IN AGRICULTURE, AGRICULTURAL OCCUPATIONS INSTITUTE, WORKSHOP REPORT (JUNE 7-JULY 16, 1965).

    ERIC Educational Resources Information Center

    Oklahoma State Univ., Stillwater. Research Foundation.

    THIRTY VOCATIONAL AGRICULTURE TEACHERS FROM 10 STATES ATTENDED A WORKSHOP TO DEVELOP THEIR ABILITIES TO INSTRUCT, SUPERVISE, AND COORDINATE STUDENT ACTIVITIES AT THE HIGH SCHOOL LEVEL IN AGRICULTURAL BUSINESS. THEIR ACTIVITIES RESULTED IN THIS REPORT, INTENDED AS A GUIDE FOR AGRICULTURE TEACHERS IN INITIATING INSTRUCTIONAL PROGRAMS FOR THE…

  5. Perceptions of Iowa Secondary School Agricultural Education Teachers and Students Regarding Sustainable Agriculture.

    ERIC Educational Resources Information Center

    Williams, David L.; Wise, Kenneth L.

    1997-01-01

    Responses from 41 of 60 Iowa secondary agriculture teachers and 464 11th- and 12th-grade students indicated both teachers and students had high perceptions of sustainable agriculture and its impact on the environment. Both groups felt the need to learn more about it. (SK)

  6. Factors Affecting the Future Enrollment of Students in Vocational Agriculture.

    ERIC Educational Resources Information Center

    Doese, Ellen Kae; Miller, W. Wade

    A study was conducted to determine how to reverse the downward trend in high school vocational agriculture enrollments in Iowa. The study sought to describe student perception of the agriculture program and what factors are involved in this perception; the length and names of the curriculum offerings within the agriculture department and how they…

  7. University Students' Perceptions of Issues Related to Agriculture.

    ERIC Educational Resources Information Center

    Terry, Robert, Jr.; Lawver, David E.

    1995-01-01

    Telephone interviews with 390 of 400 college students revealed an overall favorable impression of food safety and agriculture's impact on the economy and environment. Males were more positive about animal welfare and production agriculture. Gender, college major, and hometown were related to attitudes about agriculture issues. (SK)

  8. Agricultural Economics Students at Southern Land Grant Universities.

    ERIC Educational Resources Information Center

    Adrian, John L.; And Others

    Data were obtained in 1977 via mail questionnaires sent to students at all 1890 and 1860 Land Grant Universities in the South with programs in agriculture, to examine selected background characteristics and subjective perspectives of agricultural economics majors, compared with majors in production sciences and all agriculture curricula. The…

  9. A Profile of Agriculture Students at Regional State Universities.

    ERIC Educational Resources Information Center

    George, K. M.

    Southern Regional Research Project S-114 was initiated to obtain a better understanding of why students select agriculture as a college major and to study the factors related to their career choices; as a part of this study, in 1977 characteristics of agriculture students at two regional state universities in Kentucky were determined. The…

  10. Stimulating the Imaginative Capacities of Agricultural Extension Students

    ERIC Educational Resources Information Center

    Liang, Chaoyun; Chang, Wen-Shan; Yao, Shu-Nung; King, Jung-Tai; Chen, Shi-An

    2016-01-01

    Purpose: To address the dynamic challenges associated with developing a globally sustainable society, numerous scholars have stressed the need to cultivate the imagination of agricultural students. This study aimed to explore how pictorial representations stimulate the imaginative capacities of agricultural extension students.…

  11. Supervised Agricultural Experience: An Examination of Student Knowledge and Participation

    ERIC Educational Resources Information Center

    Lewis, Lauren J.; Rayfield, John; Moore, Lori L.

    2012-01-01

    The purpose of this study was to investigate student Supervised Agricultural Experience (SAE) knowledge and participation. This descriptive study was conducted in 120 randomly selected agricultural education programs throughout four purposively selected states representative of the National FFA regions. Students completed a questionnaire assessing…

  12. Students' Experiential Learning and Use of Student Farms in Sustainable Agriculture Education

    ERIC Educational Resources Information Center

    Parr, Damian M.; Trexler, Cary J.

    2011-01-01

    Student farms, developed largely out of student efforts, have served as centers for the development of experiential learning and sustainable agriculture and food systems educational activities on land-grant colleges of agriculture well before most formal sustainable agriculture and food systems programs were proposed. This study explored students'…

  13. A Profile of Southern Agriculture Students. Journal Series No. 1-810032 of the Alabama Agricultural Experiment Station.

    ERIC Educational Resources Information Center

    Dunkelberger, John E.; And Others

    Questionnaires which focused on attributes of undergraduate agriculture students and their reasons for enrolling in agriculture were returned by 3,182 students attending land-grant universities in the South, and a profile of Southern agriculture students evolved. During the 1970's, more women and fewer Blacks enrolled in agricultural curricula.…

  14. Applications for Dielectric Properties of Agricultural Products

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The use of dielectric properties of agricultural products for sensing moisture in grain and seed and their application in radio-frequency and microwave dielectric heating are discussed briefly. Values for the dielectric properties of a number of products, including grain, fruit, and poultry products...

  15. Dielectric properties of agricultural products and applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The use of dielectric properties of agricultural products for sensing moisture in grain and seed and their application in radio-frequency and microwave dielectric heating is discussed briefly. Values for the dielectric properties of a number of products, including grain and seed, fruits and vegetab...

  16. JPL Robotics Technology Applicable to Agriculture

    NASA Technical Reports Server (NTRS)

    Udomkesmalee, Suraphol Gabriel; Kyte, L.

    2008-01-01

    This slide presentation describes several technologies that are developed for robotics that are applicable for agriculture. The technologies discussed are detection of humans to allow safe operations of autonomous vehicles, and vision guided robotic techniques for shoot selection, separation and transfer to growth media,

  17. Energy and Agriculture. A Basic Core Curriculum for Teaching Energy to Vocational Agriculture Students.

    ERIC Educational Resources Information Center

    Albracht, James; French, Byron

    This core curriculum contains five units of material for teaching energy to vocational agriculture students. Energy uses and the benefits of energy conservation are covered in a unit on the impact of energy on agriculture. Discussed next are tractor performance and Nebraska tractor test data for selecting and evaluating tractors for maximum fuel…

  18. Predictors of Student Retention in Colleges of Agriculture.

    ERIC Educational Resources Information Center

    Dyer, James E.; Breja, Lisa M.; Wittler, Penny S. Haase

    The primary purpose of this study was to identify those factors that most accurately predict a student's intention to complete a degree in a college of agriculture. Specific research objectives were to identify similarities and differences of college of agriculture freshmen from predominately urban backgrounds, as compared to those in an…

  19. Student Images of Agriculture: Survey Highlights and Recommendations.

    ERIC Educational Resources Information Center

    Mallory, Mary E.; Sommer, Robert

    1986-01-01

    The high school students studied were unaware of the range of opportunities in agricultural careers. It was recommended that the University of California, Davis initiate a public relations campaign, with television advertising, movies, and/or public service announcements focusing on exciting, high-tech agricultural research and enterprise. (CT)

  20. Common Fractions. [Student Worksheets for Vocational Agricultural Courses].

    ERIC Educational Resources Information Center

    Jewell, Larry R.

    This learning module provides students with practice in applying mathematical operations to vocational agriculture. The module consists of unit objectives, definitions, information, problems to solve, worksheets suitable for various levels of vocational agriculture instruction, and answer keys for the problems and worksheets. This module, which…

  1. Agricultural Education at a Distance: Let's Hear from the Students.

    ERIC Educational Resources Information Center

    Kelsey, Kathleen D.; Lindner, James R.; Dooley, Kim E.

    2002-01-01

    Interviews with 18 students participating in an agriculture doctoral program at a distance found they were satisfied with convenience, instructional design, faculty, and cohort groups. Dissatisfaction was related to isolation, inaccessible resources, registration/technical problems, lack of agricultural communications curriculum, and time needed…

  2. Application of Remote Sensing in Agriculture

    NASA Astrophysics Data System (ADS)

    Piekarczyk, Jan

    2014-12-01

    With increasing intensity of agricultural crop production increases the need to obtain information about environmental conditions in which this production takes place. Remote sensing methods, including satellite images, airborne photographs and ground-based spectral measurements can greatly simplify the monitoring of crop development and decision-making to optimize inputs on agricultural production and reduce its harmful effects on the environment. One of the earliest uses of remote sensing in agriculture is crop identification and their acreage estimation. Satellite data acquired for this purpose are necessary to ensure food security and the proper functioning of agricultural markets at national and global scales. Due to strong relationship between plant bio-physical parameters and the amount of electromagnetic radiation reflected (in certain ranges of the spectrum) from plants and then registered by sensors it is possible to predict crop yields. Other applications of remote sensing are intensively developed in the framework of so-called precision agriculture, in small spatial scales including individual fields. Data from ground-based measurements as well as from airborne or satellite images are used to develop yield and soil maps which can be used to determine the doses of irrigation and fertilization and to take decisions on the use of pesticides.

  3. Relationship of Supervised Agricultural Experience Program Participation and Student Achievement in Agricultural Education.

    ERIC Educational Resources Information Center

    Cheek, Jimmy G.; And Others

    1994-01-01

    Data from 537 high school students demonstrated the positive effect of participation in supervised agricultural experience (SAE) and Future Farmers of America (FFA) on agriscience achievement. FFA involvement and the scope of SAE were highly correlated. Student interest, socioeconomic status, and years of agriscience were related to achievement…

  4. Comparing the Effectiveness of two Methods of Teaching Agricultural Science to Students in Vocational Agriculture.

    ERIC Educational Resources Information Center

    Williams, Twyman G., Jr.

    The effectiveness of visible recorded feedback responses in teaching scientific theory and principles to vocational agriculture students was studied. Specific objectives were to determine the value of group feedback to the teacher, the difference in learning retention between students with and without feedback, and the difference in efficient use…

  5. Student Arc Welding Noise Exposures in Agricultural Mechanics Laboratories.

    ERIC Educational Resources Information Center

    Miller, Glen M.

    1989-01-01

    A study surveyed noise levels in an agricultural mechanics educational laboratory while students completed common arc welds. It found that the time a student spent in the welding booth posed no threat to hearing. Maximum noise measured was well below the 140 dB(A) impulse level set by the Occupational Safety and Health Administration. (JOW)

  6. Agricultural and hydrological applications of radar

    NASA Technical Reports Server (NTRS)

    Ulaby, F. T.

    1976-01-01

    Program objectives, covering a wide range of disciplines and activities in radar remote sensing, include radar systems development and analysis, data processing and display, and data interpretation in geology, geography and oceanography. Research was focused on the evaluation of radar remote sensing applications in hydrology and agriculture based on data acquired with the Microwave Active Spectrometer (MAS) system. The title, author(s) and abstract of each of the 62 technical reports generated under this contract are appended.

  7. Perceptions of Agricultural College Students on the Relationship between Quality and Safety in Agricultural Work Environments.

    PubMed

    Ramaswamy, Sai K; Mosher, Gretchen A

    2015-01-01

    Agriculture is a high-hazard industry that employs a large number of young workers below the age of 25. Recent studies have documented a strong positive correlation between quality management in agriculture and occupational safety as perceived by agricultural workers. Younger workers have been found to be at higher risk for occupational injuries and fatalities in agriculture. Furthermore, college students in agriculture have minimal exposure to safety and quality management principles in their coursework and thus may not be aware that the two concepts are associated Little research has studied how young workers perceive the relationship between safety and quality and how these perceptions vary based on demographic characteristics. This study builds on prior research that measured the interactions between employee perceptions of safety and quality in an agricultural work environment. Data were collected using a survey instrument adapted from a previously validated instrument. Analysis of 1017 responses showed that students perceived a high impact of quality practices on the reduction of safety hazards and safety incidents. Students' perceptions of quality and safety in agricultural work environments varied by gender, with female students perceiving the relationship between the two at a higher level than males. No significant difference in perceptions was observed based on students' academic classification, age group, field of study, or childhood environment. This study demonstrates that despite limited academic training in safety and quality, pre-professionals perceive the implementation of quality management as a very important factor in mitigating safety hazards and safety incidents. In addition, this study suggests that current academic training in these disciplines must be modified, since no differences in students' perceptions were observed based on academic classification or field of study. PMID:26211353

  8. An Obstacle Alerting System for Agricultural Application

    NASA Technical Reports Server (NTRS)

    DeMaio, Joe

    2003-01-01

    Wire strikes are a significant cause of helicopter accidents. The aircraft most at risk are aerial applicators. The present study examines the effectiveness of a wire alert delivered by way of the lightbar, a GPS-based guidance system for aerial application. The alert lead-time needed to avoid an invisible wire is compared with that to avoid a visible wire. A flight simulator was configured to simulate an agricultural application helicopter. Two pilots flew simulated spray runs in fields with visible wires, invisible wires, and no wires. The wire alert was effective in reducing wire strikes. A lead-time of 3.5 sec was required for the alert to be effective. The lead- time required was the same whether the pilot could see the wire or not.

  9. Agricultural Electricity. Electric Motors. Student Manual.

    ERIC Educational Resources Information Center

    Benson, Robert T.

    Addressed to the student, this manual, which includes supplementary diagrams, discusses the following topics and principles: Electromagnetic fields, electromagnets, parts of an electric motor, determining speed of an electric motor, types of electric motors in common use (split-phase, capacitor, repulsion-induction, three-phase), the electric…

  10. Biofibers from agricultural byproducts for industrial applications.

    PubMed

    Reddy, Narendra; Yang, Yiqi

    2005-01-01

    Lignocellulosic agricultural byproducts are a copious and cheap source for cellulose fibers. Agro-based biofibers have the composition, properties and structure that make them suitable for uses such as composite, textile, pulp and paper manufacture. In addition, biofibers can also be used to produce fuel, chemicals, enzymes and food. Byproducts produced from the cultivation of corn, wheat, rice, sorghum, barley, sugarcane, pineapple, banana and coconut are the major sources of agro-based biofibers. This review analyses the production processes, structure, properties and suitability of these biofibers for various industrial applications. PMID:15629854

  11. Practical application of remote sensing in agriculture

    NASA Technical Reports Server (NTRS)

    Phelps, R. A.

    1975-01-01

    Remote sensing program imagery from several types of platforms, from light aircraft to the LANDSAT (ERTS) satellites, have been utilized during the past few years, with preference for inexpensive imagery over expensive magnetic tapes. Emphasis has been on practical application of remote sensing data to increase crop yield by decreasing plant stress, disease, weeds and undesirable insects and by improving irrigation. Imagery obtained from low altitudes via aircraft provides the necessary resolution and complements but does not replace data from high altitude aircraft, Gemini and Apollo spacecraft, Skylab space station and LANDSAT satellites. Federal government centers are now able to supply imagery within about thirty days from data of order. Nevertheless, if the full potential of space imagery in practical agricultural operations is to be realized, the time span from date of imaging to user application needs to be shortened from the current several months to not more than two weeks.

  12. DEVELOPMENT AND APPLICATION OF TECHNIQUES AND PROCEDURES FOR DETERMINING TRAINING NEEDS AND OCCUPATIONAL OPPORTUNITIES FOR STUDENTS OF VOCATIONAL AGRICULTURE WITHIN THE BATON ROUGE AGRI-BUSINESS COMPLEX.

    ERIC Educational Resources Information Center

    MORRISON, RICHARD G.

    DATA WERE SECURED BY PERSONAL INTERVIEW FROM 152 FARM-BASED BUSINESSES TO DEVELOP TECHNIQUES AND PROCEDURES FOR MAKING A SURVEY OF NONFARM AGRICULTURAL OPPORTUNITIES IN THE BATON ROUGE METROPOLITAN AREA. SEVEN MAJOR OCCUPATIONAL FAMILIES WERE IDENTIFIED IN THE AGRI-BUSINESS COMPLEX. A TOTAL OF 2,811 EMPLOYEES WAS CATEGORIZED INTO NINE LEVELS OF…

  13. Agricultural Communications Students' Awareness and Perceptions of Biotechnology Issues.

    ERIC Educational Resources Information Center

    Wingenbach, Gary J.; Rutherford, Tracy A.; Dunsford, Deborah W.

    2003-01-01

    Agricultural communications students (n=330) from 11 universities were most aware of biotechnology effects on food, less aware of effects on health and the environment. They were somewhat accepting of genetic modifications for plants, not humans. Sources of biotechnology knowledge were science classes, labs, and university professors' beliefs.…

  14. Developing Transferable Research Skills in First Year Agricultural Economics Students

    ERIC Educational Resources Information Center

    Koppi, Tony; Nolan, Elizabeth; Field, Damien

    2010-01-01

    A problem-based learning approach was adopted for a unit of study in first year agricultural economics at the University of Sydney with the aim of starting development of students' research skills earlier than usual. The novel teaching approach employed a structured and guided problem activity in the first semester and progressed to a more…

  15. Vocational Agriculture I. A Modified Curriculum for Handicapped Students.

    ERIC Educational Resources Information Center

    Texas A and M Univ., College Station. Dept. of Industrial, Vocational and Technical Education.

    This curriculum guide has been developed to assist vocational and special education teachers in teaching handicapped and disadvantaged students in a beginning vocational agriculture course. The guide contains suggestions and experiences that are necessary to support the achievement of specific competencies. The guide is divided into units of…

  16. Motivating Agriculture Students to Participate in Career Development Events

    ERIC Educational Resources Information Center

    Russell, Carmen R.; Robinson, J. Shane; Kelsey, Kathleen D.

    2009-01-01

    Previous research conducted in agricultural education has revealed a lack of participation among National FFA Organization members. However, of those FFA members who participated in FFA sponsored events; students were most satisfied with their experiences in Career Development Events (CDEs). The purpose of this qualitative study was to describe…

  17. Precision visual guidance for agricultural applicator aircraft

    NASA Astrophysics Data System (ADS)

    Hartt, Joseph R.; Bletzacker, Frank R.; Forgette, T. J.; Vetter, Alan A.

    1992-07-01

    The in-cockpit swath centerline identifier (SCI) for aerial applicators uses differentially corrected global positioning system (GPS) signals to determine precise ground track of an aircraft and provide guidance to the pilot for flying patterns for aerial application of materials such as pesticides, herbicides, and fertilizers. Cross track distance from the swath centerline is provided by a heads up light bar display while detailed navigation, position, and status information is provided on an alphanumeric display on a panel mounted console. This system provides straight line guidance when executing a swath and turn-in guidance when proceeding from one swath to the next. It provides a record of the swaths which were sprayed and logs all of the associated navigation and operational data, including time. In addition, it provides navigation information from base to the fields, between fields, and return. The SCI eliminates the need for flaggers while providing improved accuracy of application. Reduced exposure to liability and improved quality control results as the position, altitude, time, and spray status are logged for post flight analysis. The SCI has been used in commercial agricultural applications. Demonstrations of the SCI showed better precision than anticipated.

  18. International Agriculture Students' Perceptions of the Relevance of their U.S. Education.

    ERIC Educational Resources Information Center

    Cashman, Kristin; Plihal, Jane

    1987-01-01

    Reports on a study involving open-ended interviews of a sample of international agriculture students at the University of Minnesota. Presents findings about the students' agricultural backgrounds, the agricultural situations in the students' home countries, and the students' assessments of their education in the United States. (TW)

  19. Radiological Impact of Phosphogypsum Application in Agriculture

    SciTech Connect

    Dias, Nivea M. P.; Caires, Eduardo F.; Pires, Luiz F.; Bacchi, Marcio A.; Fernandes, Elisabete A. N.

    2010-08-04

    Phosphogypsum (PG) contains radionuclides from {sup 238}U and {sup 232}Th decay series. Due to the presence of these radionuclides, many countries restricted the use of PG in agriculture, however there is not such restriction in Brazil. The main objective of this work was to evaluate the impact of PG application on {sup 226}Ra ({sup 238}U) and {sup 228}Ra ({sup 232}Th) concentrations in soil. Gamma-spectrometry was carried out using HPGe detector. No increment of {sup 226}Ra and {sup 228}Ra was observed for increasing PG doses. Average values found for {sup 226}Ra and {sup 228}Ra were respectively 37 Bq kg{sup -1} and 57 Bq kg{sup -1}. The results showed that the increasing PG doses in the specific conditions of the experiment did not cause a significant increment of radionuclides.

  20. Agricultural applications of insect ecological genomics.

    PubMed

    Poelchau, Monica F; Coates, Brad S; Childers, Christopher P; Peréz de León, Adalberto A; Evans, Jay D; Hackett, Kevin; Shoemaker, DeWayne

    2016-02-01

    Agricultural entomology is poised to benefit from the application of ecological genomics, particularly the fields of biofuels generation and pest control. Metagenomic methods can characterize microbial communities of termites, wood-boring beetles and livestock pests, and transcriptomic approaches reveal molecular bases behind wood-digesting capabilities of these insects, leading to potential mechanisms for biofuel generation. Genome sequences are being exploited to develop new pest control methods, identify candidate antigens to vaccinate livestock, and discover RNAi target sequences and potential non-target effects in other insects. Gene content analyses of pest genome sequences and their endosymbionts suggest metabolic interdependencies between organisms, exposing potential gene targets for insect control. Finally, genome-wide association studies and genotyping by high-throughput sequencing promise to improve management of pesticide resistance. PMID:27436554

  1. Data Collection Satellite Application in Precision Agriculture

    NASA Astrophysics Data System (ADS)

    Durào, O.

    2002-01-01

    's over Brazilian territory. There were 25 platforms when SCD-1 was launched. However this number is growing rapidly to 400 platforms, at first for measurements of water reservoir levels as well as other hydrology applications (The Brazilian Electricity Regulatory Agency - ANEEL is the customer), and for many other different applications such as meteorology, oceanography, environmental monitoring sciences, and people and animal tracking. The clear feeling is that users are discovering a satellite system whose benefits were not previously well understood when launched and being able to propose and come up with different and useful applications. A new field in the country that has a great potential to benefit from this system is agriculture. Per se, this is a very important sector of the Brazilian economy and its international trade. Combining it with space technology may justify the investment of new and low cost dedicated satellites. This paper describes a new proposal for use of the SCD-1,2,CBERS-1 satellite system for precision agriculture. New PCD's would be developed for measurements of chemical content of the soil, such as, for example, Nitrogen and others, beyond humidity and solar incidence. This can lead to a more efficient fertilization, harvesting and even the spray of chemical defensives, with the consequence of environment protection. The PCD's ground network so established, along with the information network already available, combined with the space segment of such a system may, as previously said, be able to justify the investment in low cost satellites with this sole purpose.

  2. Theme: Teaching Physical Science Applications in Agriculture.

    ERIC Educational Resources Information Center

    Osborne, Edward W.; And Others

    1996-01-01

    Includes "Preparing Teachers to Teach Agriscience" (Osborne); "Physical Sciences and Agriculture" (Buriak); "Using Experiments to Teach Agriculture" (Miller); "Oooh-Ahhh: So That's How It Works!" (Loschen); "Keeping Agriculture in Agriscience" (Moss); "Sharpening Twist Drills" (McHargue, Hood); and "Safety in the Agriscience Laboratory"…

  3. Recent advances in radar applications to agriculture

    NASA Technical Reports Server (NTRS)

    Morain, S. A.

    1970-01-01

    A series of remote radar sensing studies are summarized. These efforts comprise geoscience interpretations of such complex phenomena as those manifested in agricultural patterns. Considered are basic remote sensing needs in agriculture and the design and implementation of radar keys in the active microwave region as well as fine resolution radar imagery techniques for agriculture determinations and soil mapping.

  4. Basic principles, methodology, and applications of remote sensing in agriculture

    NASA Technical Reports Server (NTRS)

    Moreira, M. A. (Principal Investigator); Deassuncao, G. V.

    1984-01-01

    The basic principles of remote sensing applied to agriculture and the methods used in data analysis are described. Emphasis is placed on the importance of developing a methodology that may help crop forecast, basic concepts of spectral signatures of vegetation, the methodology of the LANDSAT data utilization in agriculture, and the remote sensing program application of INPE (Institute for Space Research) in agriculture.

  5. THE ENTERING STUDENT, COLLEGE OF AGRICULTURE, A STUDY OF THE BACKGROUNDS, MOTIVATIONS, AND GOALS OF ENTERING STUDENTS IN THE COLLEGE OF AGRICULTURE AT DAVIS IN 1963 AND 1964.

    ERIC Educational Resources Information Center

    REGAN, MARY C.; THOMPSON, O. E.

    BIOGRAPHICAL, ATTITUDE, AND PERSONALITY INVENTORIES WERE ADMINISTERED TO FRESHMEN COLLEGE STUDENTS IN ALL FIELDS IN THE FALL OF 1963 AND 1964 TO IDENTIFY BACKGROUND, PRESENT ATTITUDES, AND PERSONALITY FACTORS OF THE AGRICULTURAL STUDENT. IN ADDITION, THEIR ACADEMIC PERFORMANCE IN COLLEGE HAD BEEN FOLLOWED. THE STUDENTS IN AGRICULTURE WERE GROUPED…

  6. Progress and needs in agricultural research, development, and applications programs

    NASA Technical Reports Server (NTRS)

    Moore, D. G.; Myers, V. I.

    1977-01-01

    The dynamic nature of agriculture requires repetitive resource assessments such as those from remote sensing. Until recently, the use of remote sensing in agriculture has been limited primarily to site specific investigations without large-scale evaluations. Examples of successful applications at various user levels are provided. The stage of development for applying remote sensing to many agricultural problems is assessed, and goals for planning future data characteristics for increased use in agriculture are suggested.

  7. Applications of Remote Sensing to Precision Agriculture

    NASA Astrophysics Data System (ADS)

    Seielstad, G. A.; Laguette, S.; Seelan, S.; Lawrence, R.; Henry, M.; Maynard, C.; Dalsted, K.; Rattling Leaf, J.

    2001-05-01

    The Upper Midwest Aerospace Consortium (UMAC) has changed agricultural practices in the following ways: (1) farmers and ranchers have become partners with, not clients of, researchers; (2) experiments are carried out in the field rather than on small experimental plots; (3) the field is considered an agro-ecosystem, with all the complexities of multiple interactions, rather than attempting to isolate certain parameters and vary only a few; (4) both economic benefit to the producer and sound environmental stewardship for society are achievable. This approach has revealed that information is as significant an input to farm or ranch management as seeds, fertilizers, irrigation, and tillage. Accurate, timely information equips producers with the ability to make decisions during a growing season that optimize the yield at harvest time. An invaluable source of in-season information is imagery acquired from sensors on satellites or aircraft. In addition to sensing reflected sunlight in wavebands outside the visible, remote sensing's overview also reveals anomalous patterns in the vegetation cover that are difficult to spot on the ground. Anomalies can be caused by weeds, disease, water stress, inadequate nutrients, or other causes. Often, anomalies must be detected early or they spread too quickly to be addressed. The paper will demonstrate how remote sensing has been applied to (1) define management zones in farm fields, (2) prescribe variable rate applications of fertilizer, (3) detect pest infestations, and (4) manage cattle grazing according to forage available. The applications were possible because data were processed within 4-5 days of acquisition by the satellite, and then delivered by high-bandwidth satellite links to farmers, ranchers, and tribal government officials in minimal transit time. The applications research described was part of NASA's Synergy Program.

  8. Sustainability of Agricultural Systems: Concept to Application

    EPA Science Inventory

    Agriculture not only feeds the planet, it also is the biggest overall factor affecting the environment. Thus, innovative sustainable farming systems that produce healthy food and protect the environment at the same time are very much needed. We, as agricultural engineers, need ...

  9. DIELECTRIC PROPERTIES OF MATERIALS AND RELATED AGRICULTURAL APPLICATIONS

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Potential Agricultural applications for RF and microwave energy include selective dielectric heating of insects in grain, treatment of seed to improve germination, and conditioning of products to improve nutritional value and shelf life. Measurement applications include permittivity-density relatio...

  10. Comparison of Selected Characteristics: Students in Colleges of Agriculture, Korea and the United States.

    ERIC Educational Resources Information Center

    Drabick, Lawrence W.; Humphries, Rhett S.

    A survey was administered to 789 agricultural students in Korea, and to 1019 students in 1890 schools and 2535 students in 1862 schools in the southeastern United States; responses were compared to establish similarities and differences between Korean and American students attending agricultural colleges. Differences between Korean and 1890…

  11. An Approach to Determining the Market for Academic Positions: Application to the Discipline of Agricultural Economics

    ERIC Educational Resources Information Center

    Farrell, Terence; Casavant, Ken; Jessup, Eric

    2007-01-01

    The purpose of this paper is to present issues that are relevant to pursuing an academic career in the chosen discipline of each student. The application will be a general case study of agricultural economics. The analytical model will be used to evaluate options for Ph.D. graduates in a supply and demand context. The first issue presented is a…

  12. An Analysis of Post-Secondary Agricultural Education Students' Choice to Teach

    ERIC Educational Resources Information Center

    Lawver, Rebecca G.; Torres, Robert M.

    2012-01-01

    The purpose of this study was to identify and describe factors that influence senior agricultural education students' choice to become a secondary agricultural education teacher. The study focused on the extent to which students' beliefs and attitude about teaching influenced their intent to select teaching secondary agricultural education as a…

  13. Determinants of Pre-Service Students' Choice to Teach Secondary Agricultural Education

    ERIC Educational Resources Information Center

    Lawver, Rebecca G.; Torres, Robert M.

    2011-01-01

    The purpose of this study was to explain and predict the factors that influence senior-level agricultural education students' choice to become a secondary agriculture teacher. The study focused on the extent to which beliefs and attitudes toward teaching influenced students' intent to select teaching secondary agricultural education as a career.…

  14. Factors Associated with Knowledge Level Attained by Vocational Agriculture II Students.

    ERIC Educational Resources Information Center

    Kotrlik, Joe W.; And Others

    1986-01-01

    A study was conducted to determine the technical agriculture knowledge level attained by Vocational Agriculture II students on a criterion-referenced test developed from Louisiana's Vocational Agriculture II basic curriculum; and determine if students' scores on the test differed according to selected variables: Future Farmers of America…

  15. Stress Levels of Agricultural Science Cooperating Teachers and Student Teachers: A Repeated Measures Comparative Assessment

    ERIC Educational Resources Information Center

    McKim, Billy R.; Rayfield, John; Harlin, Julie; Adams, Andy

    2013-01-01

    This study compared job stress levels of Texas agricultural science cooperating teachers and Texas agricultural science student teachers across a semester. The research objectives included describing secondary agricultural science cooperating teachers and student teachers perceptions of stressors, by time of semester (beginning, middle, and end),…

  16. Application of geophysical methods to agriculture: An overview

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Geophysical methods are becoming an increasingly valuable tool for agricultural applications. Agricultural geophysics investigations are commonly (although certainly not always) focused on delineating small- and/or large-scale objects/features within the soil profile (~ 0 to 2 m depth) over very lar...

  17. Evaluation of Agricultural Land Suitability: Application of Fuzzy Indicators

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The problem of evaluation of agricultural land suitability is considered as a fuzzy modeling task. The application of individual fuzzy indicators provides an opportunity for assessment of lsand suitability of lands as degree or grade of performance when the lands are used for agricultural purposes....

  18. Agriculture--Agricultural Production 1, Seed Bed. Kit No. 6. Instructor's Manual [and] Student Learning Activity Guide.

    ERIC Educational Resources Information Center

    Sloan, Lee

    An instructor's manual and student activity guide on the seed bed are provided in this set of prevocational education materials which focuses on the vocational area of agriculture. (This set of materials is one of ninety-two prevocational education sets arranged around a cluster of seven vocational offerings: agriculture, home economics,…

  19. Agriculture--Agriculture Science--Seed Germination. Kit No. 51. Instructor's Manual [and] Student Learning Activity Guide.

    ERIC Educational Resources Information Center

    Cooper, Samuel

    An instructor's manual and student activity guide on seed germination are provided in this set of prevocational education materials which focuses on the vocational area of agriculture. (This set of materials is one of ninety-two prevocational education sets arranged around a cluster of seven vocational offerings: agriculture, home economics,…

  20. Introduction to Agricultural Business Unit. Student Reference for Agricultural Science I Core Curriculum. [Volume 19, Number 20.

    ERIC Educational Resources Information Center

    Timko, Joseph J.; Birkenholz, Robert J.

    This student reference on agricultural business, designed to accompany the lessons outlined in the 1984 instructor's guide, "Introduction to Agricultural Business," has seven lessons: (1) introduction to agribusiness; (2) careers in agribusiness; (3) agribusiness in the community; (4) the role of the employee in an agribusiness; (5) success and…

  1. Investigating Community Factors as Predictors of Rural 11th-Grade Agricultural Science Students' Choice of Careers in Agriculture

    ERIC Educational Resources Information Center

    Adedokun, Omolola A.; Balschweid, Mark A.

    2008-01-01

    This study investigates the links between community contexts/factors and rural 11th-grade agricultural science students' choice of careers in agriculture. A logistic regression model was developed and tested to examine the extent to which nine measures of community contexts (i.e., membership in FFA, membership in 4-H, community attachment,…

  2. Summer Enrichment Programs: Providing Agricultural Literacy and Career Exploration to Gifted and Talented Students

    ERIC Educational Resources Information Center

    Cannon, John G.; Broyles, Thomas W.; Seibel, G. Andrew; Anderson, Ryan

    2009-01-01

    As agriculture continues to evolve and become more complex, the demand for qualified college graduates to fill agricultural careers exceeds supply. This study focused on a summer enrichment program that strives to expose gifted and talented students to the diverse nature of agricultural careers through the integration of agriculture and science.…

  3. Agricultural Applications and Requirements for Thermal Infrared Scanners

    NASA Technical Reports Server (NTRS)

    Wiegand, C. L.

    1971-01-01

    Some of the applications of thermal scanner data in agriculture are presented along with illustrations of some of the factors affecting the temperature of plants, soil, and water. Examples of thermal imagery are included.

  4. Agricultural and environmental applications of biochar: Advances and barriers

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This summary chapter highlights the achieved advances in biochar research and the existing barriers to biochar application. Substantial research over the past decade on biochar production, characterization, and utilization has indicated that biochar serves as a promising agricultural and environment...

  5. Agricultural applications of ERTS-1 data

    NASA Technical Reports Server (NTRS)

    Draeger, W. C.

    1973-01-01

    In an attempt to evaluate the usefulness of ERTS imagery for the production of land use stratifications as a preliminary step in the crop inventory process, all land within San Joaquin County was delineated into broad land use and crop category classes based on their appearance on the ERTS-1 Color composite image. The stratification of the agricultural land use categories proved to be a relatively simple task, taking each of three interpreters approximately 30 minutes to complete. The three interpretations were quite similar requiring only minor revisions to produce a consensus stratification. A total of 13 different agricultural strata were recognized, differing both in general field size and relative proportions of crop types and degree of irrigation. Upon comparing these interpretations, it was concluded that nearly all boundaries were truly representative of differing cropping practices. In a number of cases, the stratifications agreed almost exactly with soil type boundaries as drawn by earlier soils surveys.

  6. An Evaluation Tool for Agricultural Health and Safety Mobile Applications.

    PubMed

    Reyes, Iris; Ellis, Tammy; Yoder, Aaron; Keifer, Matthew C

    2016-01-01

    As the use of mobile devices and their software applications, or apps, becomes ubiquitous, use amongst agricultural working populations is expanding as well. The smart device paired with a well-designed app has potential for improving workplace health and safety in the hands of those who can act upon the information provided. Many apps designed to assess workplace hazards and implementation of worker protections already exist. However, the abundance and diversity of such applications also presents challenges regarding evaluation practices and assignation of value. This is particularly true in the agricultural workspace, as there is currently little information on the value of these apps for agricultural safety and health. This project proposes a framework for developing and evaluating apps that have potential usefulness in agricultural health and safety. The evaluation framework is easily transferable, with little modification for evaluation of apps in several agriculture-specific areas. PMID:27494309

  7. Agricultural applications of remote sensing: A true life adventure

    NASA Technical Reports Server (NTRS)

    Schaller, E. S.

    1975-01-01

    A study of agricultural applications of remote sensing with a major US agricultural firm was undertaken in mid-1973. The study continued for eighteen months, and covered the areas of crop monitoring and management as well as large scale crop inventories. Pilot programs in the application of aircraft remote sensing and LANDSAT data were conducted. An operational aircraft survey program for ranch management has subsequently been implemented by the agricultural firm. LANDSAT data was successfully used to produce a ninety-seven percent accurate inventory of cotton over 4.8 million acres of California's San Joaquin Valley.

  8. Use of material dielectric properties for agricultural applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The use of dielectric properties of materials for applications in agriculture are reviewed, and research findings on use of dielectric heating of materials and on sensing of product moisture content and other quality factors are discussed. Dielectric heating applications, include treatment of seed...

  9. Landsat image registration for agricultural applications

    NASA Technical Reports Server (NTRS)

    Wolfe, R. H., Jr.; Juday, R. D.; Wacker, A. G.; Kaneko, T.

    1982-01-01

    An image registration system has been developed at the NASA Johnson Space Center (JSC) to spatially align multi-temporal Landsat acquisitions for use in agriculture and forestry research. Working in conjunction with the Master Data Processor (MDP) at the Goddard Space Flight Center, it functionally replaces the long-standing LACIE Registration Processor as JSC's data supplier. The system represents an expansion of the techniques developed for the MDP and LACIE Registration Processor, and it utilizes the experience gained in an IBM/JSC effort evaluating the performance of the latter. These techniques are discussed in detail. Several tests were developed to evaluate the registration performance of the system. The results indicate that 1/15-pixel accuracy (about 4m for Landsat MSS) is achievable in ideal circumstances, sub-pixel accuracy (often to 0.2 pixel or better) was attained on a representative set of U.S. acquisitions, and a success rate commensurate with the LACIE Registration Processor was realized. The system has been employed in a production mode on U.S. and foreign data, and a performance similar to the earlier tests has been noted.

  10. Impacts of sand and dust storms on agriculture and potential agricultural applications of a SDSWS

    NASA Astrophysics Data System (ADS)

    Stefanski, R.; Sivakumar, M. V. K.

    2009-03-01

    This paper will give an overview of the various impacts of sand and dust storms on agriculture and then address the potential applications of a Sand and Dust Storm Warning System (SDSWS) for agricultural users. Sand and dust storms have many negative impacts on the agricultural sector including: reducing crop yields by burial of seedlings under sand deposits, the loss of plant tissue and reduced photosynthetic activity as a result of sandblasting, delaying plant development, increasing end-of-season drought risk, causing injury and reduced productivity of livestock, increasing soil erosion and accelerating the process of land degradation and desertification, filling up irrigation canals with sediments, covering transportation routes, affecting water quality of rivers and streams, and affecting air quality. One positive impact is the fertilization of soil minerals to terrestrial ecosystems. There are several potential agricultural applications of a SDSWS. The first is to alert agricultural communities farmers to take preventive action in the near-term such as harvesting maturing crops (vegetables, grain), sheltering livestock, and strengthening infrastructure (houses, roads, grain storage) for the storm. Also, the products of a SDSWS could be used in for monitoring potential locust movement and post-storm crop damage assessments. An archive of SDSWS products (movement, amount of sand and dust) could be used in researching plant and animal pathogen movement and the relationship of sand and dust storms to disease outbreaks and in developing improved soil erosion and land degradation models.

  11. Teaching Biology Using Agriculture as the Context: Perceptions of High School Students.

    ERIC Educational Resources Information Center

    Balschweid, Mark A.

    2002-01-01

    Of 531 students in a course using animal agriculture to teach biology, 90% felt it helped them understand the relationship between science and agriculture and the importance of agriculture. Nearly 90% disagreed with statements that animals should not be used for food and that farmers are not concerned about the environment. (Contains 18…

  12. Recognising Differences in Weed and Crop Species Recognition Skills of Agriculture Students

    ERIC Educational Resources Information Center

    Burrows, Geoffrey E.

    2012-01-01

    Students in an agricultural science degree were surveyed to assess their ability to recognise plants of agricultural importance. The survey consisted of high quality images of 25 species. Students were surveyed at the start of their studies in first year, and at various times during their second year of studies. At the start of their studies…

  13. Use of Agricultural Subject Matter by Secondary Students in Swaziland. Summary of Research SR 69.

    ERIC Educational Resources Information Center

    Simelane, M. Jethro; Miller, Larry E.

    A descriptive-correlational study was conducted to determine the extent to which students used the subject matter content taught in the "O" Level School Agriculture Program in Swaziland. The target population was 493 graduating "O" Level agriculture students in Swaziland. Data were collected in a school visit and through a mailed survey monitored…

  14. Factors Influencing Postsecondary Education Enrollment Behaviors of Urban Agricultural Education Students

    ERIC Educational Resources Information Center

    Esters, Levon T.

    2007-01-01

    The purpose of this study was to identify the factors that influenced the postsecondary education enrollment behaviors of students who graduated from an urban agricultural education program. Students indicated that parents and/or guardians had the most influence on their decisions to enroll in a postsecondary education program of agriculture.…

  15. Youth Leadership Development: Perceptions and Preferences of Urban Students Enrolled in a Comprehensive Agriculture Program

    ERIC Educational Resources Information Center

    Anderson, James C., II; Kim, Eunyoung

    2009-01-01

    This descriptive study explores the perceptions of and preferences for leadership development by students enrolled in a comprehensive urban agriculture program. A total of 284 students from the Chicago High School for Agricultural Sciences participated in the study. The results of the study showed that the average respondent was involved in a…

  16. Agricultural Marketing. Student Reference. Volume 12, Number 10. Agdex 810, Catalog Number AG-81-S.

    ERIC Educational Resources Information Center

    Denker, Robert

    This student guide in agricultural marketing is designed to accompany the lessons in the curriculum unit, "Instructor's Guide in Agricultural Marketing" (CE 025 683). There are six sections in the student guide: (1) Introduction to Marketing; (2) Marketing Cash Grains; (3) Marketing Grain with a Protected Price; (4) Marketing Cash Livestock; (5)…

  17. Entry-Level Technical Skills that Agricultural Industry Experts Expected Students to Learn through Their Supervised Agricultural Experiences: A Modified Delphi Study

    ERIC Educational Resources Information Center

    Ramsey, Jon W.; Edwards, M. Craig

    2011-01-01

    The National Research Council's (NRC) Report (1988), Understanding Agriculture: New Directions for Education, called on secondary agricultural education to shift its scope and purpose, including students' supervised agricultural experiences (SAEs). The NRC asserted that this shift should create opportunities for students to acquire supervised…

  18. Practical Remote Sensing Application for Agriculture

    NASA Technical Reports Server (NTRS)

    2002-01-01

    Aerial surveys of plant health in row crops are converted into crucial farm management information plots for each field. These plots are delivered overnight to subscribing farmers. After review, the plots are converted to machinery control discs and installed on farm equipment to manage the appropriate applications of seed, chemicals and water when and where needed. The process is repeated throughout the crop planting, growing and harvesting season. This entire operation has been installed and tested on four Mississippi Delta farms. Its use demonstrated operational cost savings of more than fifty dollars per acre and increased cotton production by ten percent on average.

  19. Assessing the Learning Needs of Student Teachers in Texas regarding Management of the Agricultural Mechanics Laboratory: Implications for the Professional Development of Early Career Teachers in Agricultural Education

    ERIC Educational Resources Information Center

    Saucier, P. Ryan; McKim, Billy R.

    2011-01-01

    Skills needed to manage a laboratory are essential knowledge for all school-based, agriculture teachers who instruct agricultural mechanics curriculum (Saucier, Terry, & Schumacher, 2009). This research investigated the professional development needs of Texas agricultural education student teachers regarding agricultural mechanics laboratory…

  20. WHY STUDENTS SELECT AGRICULTURE AS A MAJOR COURSE OF STUDY.

    ERIC Educational Resources Information Center

    JOHNSON, CECIL H.; MACK, KINSLER B.

    BECAUSE AGRICULTURAL COLLEGE ENROLLMENTS WERE NOT KEEPING PACE WITH THE DEMANDS FOR AGRICULTURAL GRADUATES, A STUDY WAS UNDERTAKEN TO DETERMINE FACTORS WHICH INFLUENCE SCHOOL OF AGRICULTURE ENROLLMENT AT CLEMSON UNIVERSITY AND REASONS FOR THE HIGH PERCENTAGE OF MAJOR COURSE CHANGES. A FOUR-SECTION SCHEDULE, ADMINISTERED IN CLASSES TO 159 SCHOOL OF…

  1. Dielectric Properties of Agricultural Products and Some Applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Abstract: The use of dielectric properties of agricultural products for sensing moisture in grain and seed and their application in radio-frequency and microwave dielectric heating is discussed briefly. Values for the dielectric properties of a number of products, including grain and seed, fruits ...

  2. A selected bibliography: Remote sensing applications in agriculture

    USGS Publications Warehouse

    Draeger, William C.; McClelland, David T.

    1977-01-01

    The bibliography contains nearly 300 citations of selected publications and technical reports dealing with the application of remote-sensing techniques to the collection and analysis of agricultural information. Most of the items included were published between January 1968 and December 1975, although some earlier works of continuing interest are included.

  3. Application of terrestrial microwave remote sensing to agricultural drought monitoring

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Root-zone soil moisture information is a valuable diagnostic for detecting the onset and severity of agricultural drought. Current attempts to globally monitor root-zone soil moisture are generally based on the application of soil water balance models driven by observed meteorological variables. Suc...

  4. Remote sensing with unmanned aircraft systems for precision agriculture applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Federal Aviation Administration is revising regulations for using unmanned aircraft systems (UAS) in the national airspace. An important potential application of UAS may be as a remote-sensing platform for precision agriculture, but simply down-scaling remote sensing methodologies developed usi...

  5. Biopolymers in controlled release devices for agricultural applications.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The use of biopolymers such as starch for agricultural applications including controlled release devices is growing due the environmental benefits. Recently, concerns have grown about the worldwide spread of parasitic mites (Varroa destructor) that infect colonies of honey bees (Apis mellifera L.). ...

  6. Dielectric properties of agricultural materials and their application

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This book is prepared as a comprehensive source of information on dielectric properties of agricultural materials for scientific researchers and engineers involved in practical application of radio-frequency and microwave energy for potential problem solutions. Dielectric properties of materials det...

  7. Automatic information extraction for land use and agricultural applications

    NASA Technical Reports Server (NTRS)

    Bond, A. D.; Thomas, D. T.

    1973-01-01

    Description of some current work in interpretation technique development for automatic computer-aided image information extraction related to various application areas, including land use mapping and agricultural survey and monitoring. In particular, the application of a fast template matching algorithm, employing the sequential similarity detection principle, to image registration, linear feature detection, and the extraction and enumeration of scene objects is discussed and illustrated.

  8. Socio-Economic Background and Access to Internet as Correlates of Students' Achievement in Agricultural Science

    ERIC Educational Resources Information Center

    Adegoke, Sunday Paul; Osokoya, Modupe M.

    2015-01-01

    This study investigated access to internet and socio-economic background as correlates of students' achievement in Agricultural Science among selected Senior Secondary Schools Two Students in Ogbomoso South and North Local Government Areas. The study adopted multi-stage sampling technique. Simple random sampling was used to select 30 students from…

  9. A Longitudinal Examination of Teaching Efficacy of Agricultural Science Student Teachers at Four Different Institutions

    ERIC Educational Resources Information Center

    Harlin, Julie F.; Roberts, T. Grady; Briers, Gary E.; Mowen, Diana L.; Edgar, Don W.

    2007-01-01

    The purposes of this study were to determine changes in teaching efficacy of student teachers over the course of the student teaching semester and to determine if similar trends occur at different institutions. The population of interest for this study was agricultural science student teachers at Tarleton State University, Texas A&M University,…

  10. Inquiry-Based Instruction for Students with Special Needs in School Based Agricultural Education

    ERIC Educational Resources Information Center

    Easterly, R. G., III; Myers, Brian E.

    2011-01-01

    Educating students with special needs in school based agricultural education (SBAE) is a problem that should be addressed. While many students in SBAE classes have special needs, contradicting research exists establishing the best method of instruction for students with special needs. Inquiry-based instruction shows some promise, but little is…

  11. Agricultural Science Fairs: Are Students Truly Learning from This Activity?

    ERIC Educational Resources Information Center

    Boleman, C. T.; Burrell, F., Jr.

    2003-01-01

    A pretest/posttest administered to 480 fourth-graders revealed an increase in correct responses for 9 of 10 questions following participation in an agricultural science fair. Significant increases were related to knowledge of how agriculture affects everyday life. A teacher survey (n=89) indicated that it was a positive learning experience but…

  12. Predicting Students' Performance on Agricultural Science Examination from Forecast Grades

    ERIC Educational Resources Information Center

    Moreetsi, Thobega; Mbako, Masole Trust

    2008-01-01

    The Botswana Examination Council (BEC) uses forecast grades obtained from secondary school Agriculture teachers to review component 2 of Agriculture final examination. Moderation of component 2 can help to improve candidates' final grade. This descriptive-correlational study purports to determine which of the component 1 (multiple choice),…

  13. Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Agriculture within the United States is varied and produces a large value ($200 billion in 2002) of production across a wide range of plant and animal production systems. Because of this diversity, changes in climate will likely impact agriculture throughout the United States. Climate affects crop, ...

  14. Service Courses in Avian Health Taught to Students Pursuing Degrees in Colleges of Agriculture

    ERIC Educational Resources Information Center

    Colwell, W. M.

    1977-01-01

    Avian health courses for agriculture students cover common types of poultry diseases and techniques for disease prevention and emphasize isolation, sanitation, and immunization. The outline of such a course at North Carolina State University is presented. (LBH)

  15. [Theme: Computers in Agricultural Education.].

    ERIC Educational Resources Information Center

    Leising, James G.; And Others

    1982-01-01

    This theme issue on computer applications in agriculture covers uses of computers in farm management and vocational agriculture instruction; strategies for evaluating and purchasing hardware and software; and ideas for improving the computer literacy of teachers and students. (SK)

  16. Cyclotides: macrocyclic peptides with applications in drug design and agriculture.

    PubMed

    Craik, David J; Mylne, Joshua S; Daly, Norelle L

    2010-01-01

    Cyclotides are disulfide-rich peptides from plants that are exceptionally stable as a result of their unique cyclic cystine knot structural motif. Their natural role is thought to be as plant defence agents, most notably against insect pests, but they also have potential applications in drug design and agriculture. This article identifies gaps in current knowledge on cyclotides and suggests future directions for research into this fascinating family of ultra-stable mini-proteins. PMID:19795188

  17. The Impact of Preparing Agriculture Faculty to Influence Student Critical Thinking Disposition

    ERIC Educational Resources Information Center

    Burbach, Mark E.; Matkin, Gina S.; Quinn, Courtney E.; Searle, Travis P.

    2012-01-01

    This study examined the effect of agriculture faculty training in and practice of methodologies to explicitly teach critical thinking skills related to course content and subsequent change in student critical thinking disposition. Twelve instructors in 14 agriculture courses underwent a year-long program of instruction in effective critical…

  18. Agriculture--Horticulture. Kit No. 36. Instructor's Manual [and] Student Learning Activity Guide.

    ERIC Educational Resources Information Center

    Smith, Claudia

    An instructor's manual and student activity guide on horticulture are provided in this set of prevocational education materials which focus on the vocational area of agriculture. (This set of materials is one of ninety-two prevocational education sets arranged around a cluster of seven vocational offerings: agriculture, home economics,…

  19. Attitudes of public school students in southeastern Oklahoma toward agriculture and horticulture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    It is not well known if children in rural areas would be willing to consider careers in agriculture in general, and horticulture, specifically. Students from grades eight to twelve (n = 64) responded to a questionnaire distributed at a workshop/field day at the USDA, ARS, South Central Agricultural...

  20. Effect of Leadership Experience on Agricultural Education Student Teacher Self-Efficacy in Classroom Management

    ERIC Educational Resources Information Center

    Wolf, Kattlyn J.; Foster, Daniel D.; Birkenholz, Robert J.

    2009-01-01

    Beginning agriculture teachers often cite classroom management as the most important problem they face in their careers. The purpose of this study was to assess the effect of leadership experience on self-perceived teacher efficacy among agricultural education student teachers. The three dimensions of teacher efficacy addressed in this study…

  1. Information Use by PhD Students in Agriculture and Biology: A Dissertation Citation Analysis

    ERIC Educational Resources Information Center

    Kuruppu, Pali U.; Moore, Debra C.

    2008-01-01

    This article reports the findings of a study conducted to examine the types of information used by graduate students in the fields of biological and agricultural sciences at Iowa State University (ISU). The citations of doctoral dissertations submitted in nine agriculture and biological science subject fields (crop production and physiology;…

  2. An Assessment of Students' Perceptions toward Factors Influencing Supervised Agricultural Experience Participation

    ERIC Educational Resources Information Center

    Lewis, Lauren J.; Rayfield, John; Moore, Lori L.

    2012-01-01

    The purpose of this study was to investigate student perceptions toward factors influencing Supervised Agricultural Experience (SAE) participation. This descriptive study was conducted in 120 randomly selected agricultural education programs throughout four purposively selected states representative of the National FFA regions. Within each state…

  3. Relationships between Special Education Confidence, Knowledge, and Selected Demographics for Agricultural Education Student Teachers

    ERIC Educational Resources Information Center

    Kessell, John; Wingenbach, Gary J.; Lawver, David

    2009-01-01

    The purpose of this study was to describe the relationship between special education confidence, knowledge, and selected demographics of agricultural education student teachers in the American Association of Agricultural Education southern region. A significant, low, positive association existed between total confidence and knowledge of providing…

  4. Urban Elementary Students' Conceptions of Learning Goals for Agricultural Science and Technology

    ERIC Educational Resources Information Center

    Trexler, Cary J.; Hess, Alexander J.; Hayes, Kathryn N.

    2013-01-01

    Nationally, both science and agricultural education professional organizations have identified agriculture as a fundamental technology to be studied by students, with the goal of achieving an understanding of the agri-food system necessary for democratic participation. Benchmarks representing the content that K-12 children need to understand about…

  5. Agriculture--Forestry. Kit No. 31. Instructor's Manual [and] Student Learning Activity Guide.

    ERIC Educational Resources Information Center

    Sloan, Lee

    An instructor's manual and student activity guide on forestry are provided in this set of prevocational education materials which focuses on the vocational area of agriculture. (This set of materials is one of ninety-two prevocational education sets arranged around a cluster of seven vocational offerings: agriculture, home economics, distributive…

  6. Agriculture--Forestry Seedlings. Kit No. 53. Instructor's Manual [and] Student Learning Activity Guide.

    ERIC Educational Resources Information Center

    Walker, Larkin V., Jr.

    An instructor's manual and student activity guide on forestry seedlings are provided in this set of prevocational education materials which focuses on the vocational area of agriculture. (This set of materials is one of ninety-two prevocational education sets arranged around a cluster of seven vocational offerings: agriculture, home economics,…

  7. Microbiological Production of Surfactant from Agricultural Residuals for IOR Application

    SciTech Connect

    Bala, Greg Alan; Bruhn, Debby Fox; Fox, Sandra Lynn; Noah, Karl Scott; Thompson, David Neal

    2002-04-01

    Utilization of surfactants for improved oil recovery (IOR) is an accepted technique with high potential. However, technology application is frequently limited by cost. Biosurfactants (surface-active molecules produced by microorganisms) are not widely utilized in the petroleum industry due to high production costs associated with use of expensive substrates and inefficient product recovery methods. The economics of biosurfactant production could be significantly impacted through use of media optimization and application of inexpensive carbon substrates such as agricultural process residuals. Utilization of biosurfactants produced from agricultural residuals may 1) result in an economic advantage for surfactant production and technology application, and 2) convert a substantial agricultural waste stream to a value-added product for IOR. A biosurfactant with high potential for use is surfactin, a lipopeptide biosurfactant, produced by Bacillus subtilis. Reported here is the production and potential IOR utilization of surfactin produced by Bacillus subtilis (American Type Culture Collection (ATCC) 21332) from starch-based media. Production of surfactants from microbiological growth media based on simple sugars, chemically pure starch medium, simulated liquid and solid potato-process effluent media, a commercially prepared potato starch in mineral salts, and process effluent from a potato processor is discussed. Additionally, the effect of chemical and physical pretreatments on starchy feedstocks is discussed.

  8. Perceptions of North Carolina High School Agricultural Educators regarding Students with Special Needs Participating in Supervised Agricultural Experience and FFA Activities

    ERIC Educational Resources Information Center

    Johnson, Lendy; Wilson, Elizabeth; Flowers, Jim; Croom, Barry

    2012-01-01

    The purpose of this study was to examine the perceptions of North Carolina high school agricultural educators toward including students with special needs when implementing Supervised Agricultural Experience and participating in FFA activities. The population was all high school agricultural educators in North Carolina with 12 month employment (N…

  9. Predicting Agricultural Education Student Teachers' Intention to Enter Teaching

    ERIC Educational Resources Information Center

    Roberts, T. Grady; Harlin, Julie F.; Briers, Gary E.

    2009-01-01

    The purpose of this study was to explore how the student teaching experience and other variables influenced student teachers' intentions to teach. Data were collected from 80 student teachers at three universities--a land grant/research I institution, a non-land grant/doctoral degree granting institution, and a comprehensive regional institution.…

  10. Examining Undergraduate Agriculture Students' Attitudes and Decisions Regarding Studying Abroad

    ERIC Educational Resources Information Center

    McDermott, Jodi Loeffelholz

    2011-01-01

    In order to effectively market and promote study abroad programs, the reasons for undergraduate students' decisions to or not to study abroad need to be considered. Limited research was found identifying students' reasons for or against studying abroad. This researcher examined the reasons students identified in their decision to or not to study…

  11. Uav for Geodata Acquisition in Agricultureal and Forestal Applications

    NASA Astrophysics Data System (ADS)

    Reidelstürz, P.; Schrenk, L.; Littmann, W.

    2011-09-01

    In the field of precision-farming research, solutions are worked out to combine ecological and economical requirements in a harmonic way. Integrating hightech in agricultural machinery, natural differences in the fields (biodiversity) can be detected and considered to economize agricultural resources and to give respect to natural ecological variability at the same time. Using precision farming resources, machining - and labour time can be economized, productivness can be improved, environmental burden can be discharged and documentation of production processes can be improved. To realize precision farming it is essential to make contemporary large scale data of the biodiversity in the field available. In the last years effectual traktor based equipment for real time precision farming applications was developed. Using remote sensing, biomass diversity of the field can be considered while applicating operating ressources economicly. Because these large scale data aquisition depends on expensive tractor based inspections, capable Unmanned Aerial Vehicles (UAVs) could complement or in special situations even replace such tractor based data aquisition needed for the realization of precision farming strategies. The specific advantages and application slots of UAVs seems to be ideal for the usage in the field of precision farming. For example the size of even large agricultural fields in germany can be managed even by smaller UAVs. Data can be captured spontaneously, promptly, in large scale, with less respect of weather conditions. In agricultural regions UAV flights can be arranged in visual range as actually the legislator requires in germany, especially because the use of autopilotsystems in fact is nessecary to assure regular area-wide data without gaps but not to fly in non-visible regions. Also a minimized risk of hazard is given, flying UAVs over deserted agricultural areas. In a first stage CIS GmbH cooperated with "Institute For Flightsystems" of the University

  12. 3-D Imaging Systems for Agricultural Applications-A Review.

    PubMed

    Vázquez-Arellano, Manuel; Griepentrog, Hans W; Reiser, David; Paraforos, Dimitris S

    2016-01-01

    Efficiency increase of resources through automation of agriculture requires more information about the production process, as well as process and machinery status. Sensors are necessary for monitoring the status and condition of production by recognizing the surrounding structures such as objects, field structures, natural or artificial markers, and obstacles. Currently, three dimensional (3-D) sensors are economically affordable and technologically advanced to a great extent, so a breakthrough is already possible if enough research projects are commercialized. The aim of this review paper is to investigate the state-of-the-art of 3-D vision systems in agriculture, and the role and value that only 3-D data can have to provide information about environmental structures based on the recent progress in optical 3-D sensors. The structure of this research consists of an overview of the different optical 3-D vision techniques, based on the basic principles. Afterwards, their application in agriculture are reviewed. The main focus lays on vehicle navigation, and crop and animal husbandry. The depth dimension brought by 3-D sensors provides key information that greatly facilitates the implementation of automation and robotics in agriculture. PMID:27136560

  13. Airborne Remote Sensing (ARS) for Agricultural Research and Commercialization Applications

    NASA Technical Reports Server (NTRS)

    Narayanan, Ram; Bowen, Brent D.; Nickerson, Jocelyn S.

    2002-01-01

    Tremendous advances in remote sensing technology and computing power over the last few decades are now providing scientists with the opportunity to investigate, measure, and model environmental patterns and processes with increasing confidence. Such advances are being pursued by the Nebraska Remote Sensing Facility, which consists of approximately 30 faculty members and is very competitive with other institutions in the depth of the work that is accomplished. The development of this facility targeted at applications, commercialization, and education programs in the area of precision agriculture provides a unique opportunity. This critical area is within the scope of NASA goals and objectives of NASA s Applications, Technology Transfer, Commercialization, and Education Division and the Earth Science Enterprise. This innovative integration of Aerospace (Aeronautics) Technology Enterprise applications with other NASA enterprises serves as a model of cross-enterprise transfer of science with specific commercial applications.

  14. 29 CFR 519.3 - Application for a full-time student certificate.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 3 2013-07-01 2013-07-01 false Application for a full-time student certificate. 519.3 Section 519.3 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS EMPLOYMENT OF FULL-TIME STUDENTS AT SUBMINIMUM WAGES Retail or Service Establishments, and Agriculture § 519.3 Application for...

  15. 29 CFR 519.3 - Application for a full-time student certificate.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Application for a full-time student certificate. 519.3 Section 519.3 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS EMPLOYMENT OF FULL-TIME STUDENTS AT SUBMINIMUM WAGES Retail or Service Establishments, and Agriculture § 519.3 Application for...

  16. 29 CFR 519.3 - Application for a full-time student certificate.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 3 2014-07-01 2014-07-01 false Application for a full-time student certificate. 519.3 Section 519.3 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS EMPLOYMENT OF FULL-TIME STUDENTS AT SUBMINIMUM WAGES Retail or Service Establishments, and Agriculture § 519.3 Application for...

  17. United States Department of Agriculture-Agricultural Research Service research in application technology for pest management.

    PubMed

    Smith, L A; Thomson, S J

    2003-01-01

    A research summary is presented that emphasizes ARS achievements in application technology over the past 2-3 years. Research focused on the improvement of agricultural pesticide application is important from the standpoint of crop protection as well as environmental safety. Application technology research is being actively pursued within the ARS, with a primary focus on application system development, drift management, efficacy enhancement and remote sensing. Research on application systems has included sensor-controlled hooded sprayers, new approaches to direct chemical injection, and aerial electrostatic sprayers. For aerial application, great improvements in on-board flow controllers permit accurate field application of chemicals. Aircraft parameters such as boom position and spray release height are being altered to determine their effect on drift. Other drift management research has focused on testing of low-drift nozzles, evaluation of pulsed spray technologies and evaluation of drift control adjuvants. Research on the use of air curtain sprayers in orchards, air-assist sprayers for row crops and vegetables, and air deflectors on aircraft has documented improvements in application efficacy. Research has shown that the fate of applied chemicals is influenced by soil properties, and this has implications for herbicide efficacy and dissipation in the environment. Remote sensing systems are being used to target areas in the field where pests are present so that spray can be directed to only those areas. Soil and crop conditions influence propensity for weeds and insects to proliferate in any given field area. Research has indicated distinct field patterns favorable for weed growth and insect concentration, which can provide further assistance for targeted spraying. PMID:12846320

  18. Market assessment of photovoltaic power systems for agricultural applications worldwide

    NASA Astrophysics Data System (ADS)

    Cabraal, A.; Delasanta, D.; Rosen, J.; Nolfi, J.; Ulmer, R.

    1981-11-01

    Agricultural sector PV market assessments conducted in the Phillippines, Nigeria, Mexico, Morocco, and Colombia are extrapolated worldwide. The types of applications evaluated are those requiring less than 15 kW of power and operate in a stand alone mode. The major conclusions were as follows: PV will be competitive in applications requiring 2 to 3 kW of power prior to 1983; by 1986 PV system competitiveness will extend to applications requiring 4 to 6 kW of power, due to capital constraints, the private sector market may be restricted to applications requiring less than about 2 kW of power; the ultimate purchase of larger systems will be governments, either through direct purchase or loans from development banks. Though fragmented, a significant agriculture sector market for PV exists; however, the market for PV in telecommunications, signalling, rural services, and TV will be larger. Major market related factors influencing the potential for U.S. PV Sales are: lack of awareness; high first costs; shortage of long term capital; competition from German, French and Japanese companies who have government support; and low fuel prices in capital surplus countries. Strategies that may aid in overcoming some of these problems are: setting up of a trade association aimed at overcoming problems due to lack of awareness, innovative financing schemes such as lease arrangements, and designing products to match current user needs as opposed to attempting to change consumer behavior.

  19. Market assessment of photovoltaic power systems for agricultural applications worldwide

    NASA Technical Reports Server (NTRS)

    Cabraal, A.; Delasanta, D.; Rosen, J.; Nolfi, J.; Ulmer, R.

    1981-01-01

    Agricultural sector PV market assessments conducted in the Phillippines, Nigeria, Mexico, Morocco, and Colombia are extrapolated worldwide. The types of applications evaluated are those requiring less than 15 kW of power and operate in a stand alone mode. The major conclusions were as follows: PV will be competitive in applications requiring 2 to 3 kW of power prior to 1983; by 1986 PV system competitiveness will extend to applications requiring 4 to 6 kW of power, due to capital constraints, the private sector market may be restricted to applications requiring less than about 2 kW of power; the ultimate purchase of larger systems will be governments, either through direct purchase or loans from development banks. Though fragmented, a significant agriculture sector market for PV exists; however, the market for PV in telecommunications, signalling, rural services, and TV will be larger. Major market related factors influencing the potential for U.S. PV Sales are: lack of awareness; high first costs; shortage of long term capital; competition from German, French and Japanese companies who have government support; and low fuel prices in capital surplus countries. Strategies that may aid in overcoming some of these problems are: setting up of a trade association aimed at overcoming problems due to lack of awareness, innovative financing schemes such as lease arrangements, and designing products to match current user needs as opposed to attempting to change consumer behavior.

  20. Infusing a Global Perspective into the Study of Agriculture: Student Activities Volume II.

    ERIC Educational Resources Information Center

    Martin, Robert A., Ed.

    These student activities are designed to be used in a variety of places in the curriculum to provide a global perspective for students as they study agriculture. This document is not a unit of instruction; rather, teachers are encouraged to study the materials and decide which will be helpful in adding a global perspective to the learning…

  1. Status of Gifted Students in Vocational Agriculture Classes in the United States.

    ERIC Educational Resources Information Center

    Pandya, Himanshu S.; Curtis, Samuel M.

    Gifted students have been enrolling in high school vocational agriculture courses in increasing numbers in recent years, according to a mailed survey of 100 randomly selected schools in 10 randomly selected states, plus Pennsylvania. During the 1974-80 time period, enrollment of identified gifted students in the surveyed vocational agriculture…

  2. Perceptions of Teaching Ability during the Student Teaching Experience in Agricultural Education

    ERIC Educational Resources Information Center

    Krysher, Sheyenne; Robinson, J. Shane; Montgomery, Diane; Edwards, M. Craig

    2012-01-01

    The purpose of this study was to describe the views student teachers in agricultural education at Oklahoma State University had regarding their 12-week student teaching internship. Using Q-methodology as a research approach, 28 interns rank-ordered a Q-set of 36 statements describing various aspects teacher responsibilities and performance. The…

  3. SEPARATION OF AGRICULTURE STUDENTS INTO CURRICULUM AND ACADEMIC SUCCESS GROUPS BY DISCRIMINANT ANALYSIS.

    ERIC Educational Resources Information Center

    RICHARDSON, C. MARK

    THE PURPOSE OF THE STUDY WAS TO DETERMINE WHETHER DISCRIMINANT FUNCTIONS COMPUTED FROM MEASURES OF APTITUDE, PERSONALITY TRAITS, VOCATIONAL INTEREST, AND HIGH SCHOOL RANK WOULD SEPARATE FRESHMAN MALE STUDENTS INTO CURRICULUM AND ACADEMIC SUCCESS GROUPS. THE HYPOTHESES CONCERNED AGRICULTURE STUDENTS GRADUATED IN SCIENCE AND GENERAL PROGRAMS,…

  4. REPORT ON A STUDY OF STUDENT INTERESTS IN FIVE AGRICULTURAL OCCUPATIONS GROUPS, THREE AREAS OF NEW YORK STATE.

    ERIC Educational Resources Information Center

    NOAKES, HAROLD L.

    DURING 1964-65, QUESTIONNAIRES WERE GIVEN TO 6,706 STUDENTS IN GRADES 8-10 TO ASCERTAIN THEIR INTEREST IN PREPARATION FOR AGRICULTURAL OCCUPATIONS. STUDENTS FROM 13 SCHOOLS WHICH OFFERED AGRICULTURE COURSES, AND NINE WHICH DID NOT, WERE ASKED TO INDICATE THEIR INTEREST IN AGRICULTURAL ACTIVITIES AND THEIR CHOICE OF THE FOLLOWING--(1) AGRICULTURAL…

  5. Application of Terrestrial Microwave Remote Sensing to Agricultural Drought Monitoring

    NASA Astrophysics Data System (ADS)

    Crow, W. T.; Bolten, J. D.

    2014-12-01

    Root-zone soil moisture information is a valuable diagnostic for detecting the onset and severity of agricultural drought. Current attempts to globally monitor root-zone soil moisture are generally based on the application of soil water balance models driven by observed meteorological variables. Such systems, however, are prone to random error associated with: incorrect process model physics, poor parameter choices and noisy meteorological inputs. The presentation will describe attempts to remediate these sources of error via the assimilation of remotely-sensed surface soil moisture retrievals from satellite-based passive microwave sensors into a global soil water balance model. Results demonstrate the ability of satellite-based soil moisture retrieval products to significantly improve the global characterization of root-zone soil moisture - particularly in data-poor regions lacking adequate ground-based rain gage instrumentation. This success has lead to an on-going effort to implement an operational land data assimilation system at the United States Department of Agriculture's Foreign Agricultural Service (USDA FAS) to globally monitor variations in root-zone soil moisture availability via the integration of satellite-based precipitation and soil moisture information. Prospects for improving the performance of the USDA FAS system via the simultaneous assimilation of both passive and active-based soil moisture retrievals derived from the upcoming NASA Soil Moisture Active/Passive mission will also be discussed.

  6. Light polarization by vegetation cover - Possible agricultural applications

    NASA Technical Reports Server (NTRS)

    Rondeaux, Genevieve; Guyot, Gerard

    1990-01-01

    A review of the physical mechanisms involved in light polarization by reflecting surfaces is presented and experimental results for single leaf, bare soil, and plant canopies are analyzed. It is shown that light polarization can be employed to identify different plant canopies and to estimate their standing biomass. For bare soils, light polarization can be used to monitor the surface soil moisture and the state of the surface. Thus light polarization may be considered as a new remote sensing technique for potential agricultural application.

  7. Remote sensing applied to agriculture: Basic principles, methodology, and applications

    NASA Technical Reports Server (NTRS)

    Dejesusparada, N. (Principal Investigator); Mendonca, F. J.

    1981-01-01

    The general principles of remote sensing techniques as applied to agriculture and the methods of data analysis are described. the theoretical spectral responses of crops; reflectance, transmittance, and absorbtance of plants; interactions of plants and soils with reflectance energy; leaf morphology; and factors which affect the reflectance of vegetation cover are dicussed. The methodologies of visual and computer-aided analyses of LANDSAT data are presented. Finally, a case study wherein infrared film was used to detect crop anomalies and other data applications are described.

  8. Application of excilamps in agriculture and animal breeding (review)

    NASA Astrophysics Data System (ADS)

    Sosnin, Eduard A.; Chudinova, Yulia V.; Victorova, Irina A.; Volotko, Ivan I.

    2015-12-01

    The paper provides a review of research data on applications of XeCl excilamps in agriculture and animal breeding. The data demonstrate a favorable effect of radiation produced by the excilamps on the fertility of animals (outbred mice and pigs) and on the growth of plants (flaxes, potatoes, carrots, cucumbers, conifers). Excilamp models adapted specially for use in stock-raising and grain storage complexes are now available. The research data obtained in 2012-2015 suggest that XeCl excilamps hold promise for prevention of diseases in indoor-housed pigs and for pre-sowing seed preparation.

  9. Off-farm applications of solar energy in agriculture

    SciTech Connect

    Berry, R.E.

    1980-01-01

    Food processing applications make up almost all present off-farm studies of solar energy in agriculture. Research, development and demonstration projects on solar food processing have shown significant progress over the past 3 years. Projects have included computer simulation and mathematical models, hardware and process development for removing moisture from horticultural or animal products, integration of energy conservation with solar energy augmentation in conventional processes, and commercial scale demonstrations. The demonstration projects include solar heated air for drying prunes and raisins, soy beans and onions/garlic; and solar generated steam for orange juice pasteurization. Several new and planned projects hold considerable promise for commerical exploitation in future food processes.

  10. Evaluation of the Incubators in the Classroom Program: Does It Increase Fourth Grade Students' and Teachers' Knowledge about Agricultural Professions?

    ERIC Educational Resources Information Center

    Meunier, Ryan A.; Talbert, B. Allen; Latour, Mickey A.

    2003-01-01

    Agricultural literacy materials on incubators in the classroom were used by 373 Indiana fourth graders and 19 teachers. Comparison of the treatment group's pretest/postest results with those of controls (363 students, 20 teachers) showed the materials increased student and teacher knowledge of agricultural professions; students were significantly…

  11. A Qualitative Study of Agricultural Literacy in Urban Youth: What Do Elementary Students Understand about the Agri-Food System?

    ERIC Educational Resources Information Center

    Hess, Alexander J.; Trexler, Cary J.

    2011-01-01

    Agricultural literacy of K-12 students is a national priority for both scientific and agricultural education professional organizations. Development of curricula to address this priority has not been informed by research on what K-12 students understand about the agri-food system. While students' knowledge of food and fiber system facts have been…

  12. Radiation synthesis of superabsorbent CMC based hydrogels for agriculture applications

    NASA Astrophysics Data System (ADS)

    Raafat, Amany I.; Eid, Mona; El-Arnaouty, Magda B.

    2012-07-01

    A series of superabsorbent hydrogel based on carboxymethylcellulose (CMC) and polyvinylpyrrolidone (PVP) crosslinked with gamma irradiation have been proposed for agriculture application. The effect of preparation conditions such as feed solution composition and absorbed irradiation dose on the gelation and swelling degree was evaluated. The structure and the morphology of the superabsorbent CMC/PVP hydrogel were characterized using Fourier transform infrared spectroscopy technique (FTIR), and scanning electron microscope (SEM). Effect of ionic strength and cationic and anionic kinds on the swelling behavior of the obtained hydrogel was investigated. Urea as an agrochemical model was loaded onto the obtained hydrogel to provide nitrogen (N) nutrients. The water retention capability and the urea release behavior of the CMC/PVP hydrogels were investigated. It was found that, the obtained CMC/PVP hydrogels have good swelling degree that greatly affected by its composition and absorbed dose. The swelling was also extremely sensitive to the ionic strength and cationic kind. Owing to its considerable slow urea release, good water retention capacity, being economical, and environment-friendly, it might be useful for its application in agriculture field.

  13. Volumetric and selective heating in agriculture and chemistry applications

    NASA Astrophysics Data System (ADS)

    Raghavan, Vijaya G.; Dai, Jianming; Sunjka, Predrag S.

    2004-04-01

    Microwaves of 2450 MHz have been attracting attention from researchers of various fields. The most distinguished characteristics of microwave from conventional heating are volumetric and selectivity. Due to these characteristics, when combined with convective air, microwave-assisted drying can greatly reduce drying time and energy usage to achieve certain moisture content. These characteristics also make it possible to combine this highly efficient heating method with vacuum drying by passing the energy through a microwave-transparent vacuum chamber. Microwaves also have various applications in chemistry such as extraction of natural products from plant materials and microwave-assisted synthesis. In this paper, the work conducted in our lab on the applications of microwave energy in agriculture and chemistry is briefly reviewed.

  14. Market assessment of photovoltaic power systems for agricultural applications worldwide

    SciTech Connect

    Cabraal, A.; Delasanta, D.; Rosen, J.; Nolfi, J.; Ulmer, R.

    1981-11-01

    This report integrates and extrapolates worldwide the results of the agricultural sector PV market assessments conducted in the Philippines, Nigeria, Mexico, Morocco, and Colombia. The types of applications evaluated are those requiring less than 15 kW of power and operate in a stand-alone mode. The study focused on the needs of low- and middle-income countries. The major conclusions derived from the studies were as follows: PV will be competitive in applications requiring 2 - 3 kW of power prior to 1983; by 1986 PV system competitiveness will extend to applications requiring 4 - 6 kW of power, due to capital constraints, the private sector market may be restricted to applications requiring less than about 2 kW of power; the ultimate purchase of larger systems will be governments, either through direct purchase or loans from development banks. Though fragmented, significant agriculture sector market for PV exists; however the market for PV in telecommunications, signalling, rural services, and TV will be larger. Major market-related factors influencing the potential for US PV sales are: lack of awareness; high first costs; shortage of long-term capital; competition from German, French and Japanese companies who have their governments support; and low fuel prices in capital surplus countries. Strategies that may aid in overcoming some of these problems are: setting up of a trade association aimed at overcoming problems due to lack of awareness, innovative financing schemes such as lease arrangements, and designing products to match current user needs as opposed to attempting to change consumer behavior.

  15. Market assessment of photovoltaic power systems for agricultural applications in the Philippines

    SciTech Connect

    Cabraal, R.A.; Delasanta, D.; Burrill, G.

    1981-04-01

    The following subjects are included: demographic overview;Philippine development plans; financing of energy, agriculture and development projects; potential photovoltaic applications in Philippine agriculture; market assessment; and business environment. The applications cover fish/prawn hatchery operations, irrigation, maintenance facilities, grinding and milling, fish cultivation, salt production, ice manufacture, and agricultural extension services. (MHR)

  16. Agricultural Literacy: Clarifying a Vision for Practical Application

    ERIC Educational Resources Information Center

    Powell, David; Agnew, David; Trexler, Cary

    2008-01-01

    "Agricultural literacy" is a working concept with considerable range in meaning and impact. An overview of agricultural literacy curricula shows complementary deductive and inductive approaches to the systematic incorporation of agricultural education in K-12 classrooms. Based on positions discussed at the 2005 Agricultural Literacy Special…

  17. Mechanical properties and potential commercial applications of agricultural composites

    SciTech Connect

    Asadi, M.; Farokhi, S.; McCabe, S.L.

    1995-11-01

    This paper reveals information on the mechanical properties of the agricultural composites and their commercial potential as a substitute for plastics and woods leading to a lower cost for these products. Chopped and particulate agricultural co-products (hereafter referred to agro-fibers) such as wheat, brome hay, switchgrass, and corn were mixed at a ratio of 66:34 fiber/epoxy by volume to manufacture agricultural composites (hereafter referred to agrocomposites) using the hand lay-up molding technique. The manufactured composite samples were tested for their mechanical properties such as tensile stress, compressive stress, moisture absorption, and thermal expansion. According to results, chopped switchgrass agro-composite samples showed the highest tensile strength, yet less than that of soft woods and slightly higher than that of plastics (high density polyethylene known as HDPE). As a result, a second set of agro-composite samples using only chopped switchgrass was manufactured at 10%, 20%, 30%, 40%, and 50% agro-fiber content to obtain the optimal fiber/epoxy ratio for which agro-composite samples show the maximum tensile stress. The same procedure was followed for comprehensive strength, thermal expansion, and moisture absorption measurements. According to the obtained results, at 50:50, agro-composite samples showed the highest tensile stress at 2,925 psi compared to that of plastic at 2,000 psi and of soft wood at 6,600 psi. At 10:90 agro-fiber/epoxy, compressive strength of the agro-composite samples were 60% higher than that of plastic and 80% higher than that of soft woods. Thermal expansion and moisture absorption of the manufactured agro-composite samples showed better performances than both woods and plastics. Optimized agro-composite samples, due to their cost competitiveness and low weight, could replace woods and plastics in some applications. A small fraction of plastic and wood market wood lead to new source of revenues for farmers.

  18. Zinc oxide nanoparticles for revolutionizing agriculture: synthesis and applications.

    PubMed

    Sabir, Sidra; Arshad, Muhammad; Chaudhari, Sunbal Khalil

    2014-01-01

    Nanotechnology is the most innovative field of 21st century. Extensive research is going on for commercializing nanoproducts throughout the world. Due to their unique properties, nanoparticles have gained considerable importance compared to bulk counterparts. Among other metal nanoparticles, zinc oxide nanoparticles are very much important due to their utilization in gas sensors, biosensors, cosmetics, drug-delivery systems, and so forth. Zinc oxide nanoparticles (ZnO NPs) also have remarkable optical, physical, and antimicrobial properties and therefore have great potential to enhance agriculture. As far as method of formation is concerned, ZnO NPs can be synthesized by several chemical methods such as precipitation method, vapor transport method, and hydrothermal process. The biogenic synthesis of ZnO NPs by using different plant extracts is also common nowadays. This green synthesis is quite safe and ecofriendly compared to chemical synthesis. This paper elaborates the synthesis, properties, and applications of zinc oxide nanoparticles. PMID:25436235

  19. Zinc Oxide Nanoparticles for Revolutionizing Agriculture: Synthesis and Applications

    PubMed Central

    Sabir, Sidra; Arshad, Muhammad

    2014-01-01

    Nanotechnology is the most innovative field of 21st century. Extensive research is going on for commercializing nanoproducts throughout the world. Due to their unique properties, nanoparticles have gained considerable importance compared to bulk counterparts. Among other metal nanoparticles, zinc oxide nanoparticles are very much important due to their utilization in gas sensors, biosensors, cosmetics, drug-delivery systems, and so forth. Zinc oxide nanoparticles (ZnO NPs) also have remarkable optical, physical, and antimicrobial properties and therefore have great potential to enhance agriculture. As far as method of formation is concerned, ZnO NPs can be synthesized by several chemical methods such as precipitation method, vapor transport method, and hydrothermal process. The biogenic synthesis of ZnO NPs by using different plant extracts is also common nowadays. This green synthesis is quite safe and ecofriendly compared to chemical synthesis. This paper elaborates the synthesis, properties, and applications of zinc oxide nanoparticles. PMID:25436235

  20. Real cases study through computer applications for futures Agricultural Engineers

    NASA Astrophysics Data System (ADS)

    Moratiel, R.; Durán, J. M.; Tarquis, A. M.

    2010-05-01

    One of the huge concerns on the higher engineer education is the lag of real cases study that the future professionals need in the work and corporation market. This concern was reflected in Bologna higher education system including recommendations in this respect. The knowhow as why this or other methodology is one of the keys to resolve this problem. In the last courses given in Department of Crop Production, at the Agronomy Engineer School of Madrid (Escuela Técnica Superior de Ingenieros Agrónomos, UPM) we have developed more than one hundred applications in Microsoft Excel®. Our aim was to show different real scenarios which the future Agronomic Engineers can be found in their professional life and with items related to crop production field. In order to achieve our target, each application in Excel presents a file text in which is explained the theoretical concepts and the objectives, as well as some resources used from Excel syntax. In this way, the student can understand and use of such application, even they can modify and customize it for a real case presented in their context and/or master project. This electronic monograph gives an answer to the need to manage data in several real scenarios showed in lectures, calculus resolution, information analysis and manage worksheets in a professional and student level.

  1. Factors Influencing an Agricultural Education Student's Perception of the FFA Organization.

    ERIC Educational Resources Information Center

    Croom, D. Barry; Flowers, James L.

    2001-01-01

    A survey of secondary agriscience students in North Carolina (167 Future Farmers of America members, 237 nonmembers) indicated that the decision to join/not join the organization was influenced by its image in the school and its ability to meet affiliation needs. Gender, ethnicity, agriculture coursetaking, and grade level did not influence…

  2. Motivational Needs of Students Enrolled in Agricultural Education Programs in Georgia.

    ERIC Educational Resources Information Center

    Turner, Jeff; Herren, Ray V.

    1997-01-01

    Agricultural education students in Georgia (n=1,952) were mostly motivated by achievement need. Future Farmers of America members had greater needs for achievement, affiliation, and power; females had higher affiliation and power needs; and African Americans had higher achievement and power needs. Differences in age and urban/rural settings were…

  3. Describing the Cognitive Level of Professor Discourse and Student Cognition in College of Agriculture Class Sessions

    ERIC Educational Resources Information Center

    Ewing, John C.; Whittington, M. Susie

    2009-01-01

    The purpose of this study was to describe the cognitive level of professor discourse and student cognition during selected college of agriculture class sessions. Twenty-one undergraduate class sessions were videotaped in 12 professors' courses. Results were interpreted to show that professors' discourse was mostly (62%) at the knowledge and…

  4. Nanotechnology Awareness of First-Year Food and Agriculture Students Following a Brief Exposure

    ERIC Educational Resources Information Center

    Diefes-Dux, Heidi A.; Dyehouse, Melissa; Bennett, Deborah; Imbrie, P. K.

    2007-01-01

    There is a great need for professionals trained to work in the field of nanotechnology, particularly in food and agriculture. However, the general public knows very little about nanotechnology; therefore, few students entering college seek out educational opportunities that will lead to careers with a focus on nanotechnology. This study was…

  5. Undergraduate Involvement in Extracurricular Activities and Leadership Development in College of Agriculture and Life Sciences Students

    ERIC Educational Resources Information Center

    Foreman, Elizabeth A.; Retallick, Michael S.

    2012-01-01

    The purpose of this study was to identify and describe experiences of undergraduate extracurricular involvement that result in increased leadership development. Senior students in the College of Agriculture and Life Sciences at Iowa State University completed an online questionnaire about their extracurricular experiences. Leadership development…

  6. Career Indecision Levels of Students Enrolled in a College of Agriculture and Life Sciences

    ERIC Educational Resources Information Center

    Esters, Levon T.

    2007-01-01

    The purpose of this study was to determine the level of career indecision of students enrolled in the College of Agriculture and Life Sciences at Iowa State University. A primary goal of this research was to explore the construct of career indecision using the three factor structure identified by Kelly and Lee (2002). The factors of interest in…

  7. Agriculture--Floriculture. Kit No. 104. Instructor's Manual and Student Learning Activity Guide.

    ERIC Educational Resources Information Center

    Huffman, Tommy

    Designed for use in a secondary agricultural education class, this activity kit on floriculture consists of an instructor's manual and a student learning guide. The instructor's manual contains this information: duration, goals, a list of instructional objectives, the vocational clusters to which this activity is related, activity implementation…

  8. Teaching Basic Production Economic Principles to Secondary School Students of Vocational Agriculture: An Evaluative Case Study.

    ERIC Educational Resources Information Center

    McGuire, James E.

    Four modules of instruction on basic production economic principles were developed, tried in high school classes of students preparing for on- and off-farm agricultural occupations, and evaluated for content and teaching. Basic principles studied were supply and demand, value theory, variable proportions, and marginal analysis. Total and part…

  9. Measuring the Interest of German Students in Agriculture: The Role of Knowledge, Nature Experience, Disgust, and Gender

    ERIC Educational Resources Information Center

    Bickel, Malte; Strack, Micha; Bögeholz, Susanne

    2015-01-01

    Modern knowledge-based societies, especially their younger members, have largely lost their bonds to farming. However, learning about agriculture and its interrelations with environmental issues may be facilitated by students' individual interests in agriculture. To date, an adequate instrument to investigate agricultural interests has been…

  10. 20 CFR 655.1301 - Applications for temporary employment certification in agriculture.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 20 Employees' Benefits 3 2012-04-01 2012-04-01 false Applications for temporary employment certification in agriculture. 655.1301 Section 655.1301 Employees' Benefits EMPLOYMENT AND TRAINING... Applications for temporary employment certification in agriculture. (a) Application filing requirements. (1)...

  11. 20 CFR 655.1301 - Applications for temporary employment certification in agriculture.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 20 Employees' Benefits 3 2014-04-01 2014-04-01 false Applications for temporary employment certification in agriculture. 655.1301 Section 655.1301 Employees' Benefits EMPLOYMENT AND TRAINING... Applications for temporary employment certification in agriculture. (a) Application filing requirements. (1)...

  12. 20 CFR 655.1301 - Applications for temporary employment certification in agriculture.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Applications for temporary employment certification in agriculture. 655.1301 Section 655.1301 Employees' Benefits EMPLOYMENT AND TRAINING... Applications for temporary employment certification in agriculture. (a) Application filing requirements. (1)...

  13. 20 CFR 655.1301 - Applications for temporary employment certification in agriculture.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 20 Employees' Benefits 3 2013-04-01 2013-04-01 false Applications for temporary employment certification in agriculture. 655.1301 Section 655.1301 Employees' Benefits EMPLOYMENT AND TRAINING... Applications for temporary employment certification in agriculture. (a) Application filing requirements. (1)...

  14. Using Time Allocation to Understand the Perceived Teaching Ability of Student Teachers in Agricultural Education: A Q-Method Study

    ERIC Educational Resources Information Center

    Krysher, Sheyenne

    2010-01-01

    Scope and method of study: The purpose of this study was to describe the views student teachers in agricultural education at Oklahoma State University had regarding their 12-week student teaching experience. Twenty-eight student teachers participated in the study. Q-methodology was employed to analyze the views of the student teachers. Modes of…

  15. Supervised Occupational Experience and Achievement of Students Mainstreamed in Ohio Vocational Agriculture Programs. Summary of Research 41.

    ERIC Educational Resources Information Center

    Potter, Oscar B.; McCracken, J. David

    The purpose of this study was to examine the type and scope of supervised occupational experience programs (SOEPs) and the achievement of students mainstreamed in vocational agriculture in Ohio. Achievement was measured by the grade students received in vocational agriculture during the first semester of the 1983-84 school year. The sample for the…

  16. Overcoming Gender Bias with Self-Efficacy: A Case Study of Women Agricultural Education Teachers and Preservice Students

    ERIC Educational Resources Information Center

    Kelsey, Kathleen D.

    2007-01-01

    Women have been traditionally underrepresented in secondary agricultural education as teachers and students. Using critical theory as the lens for interpreting findings, this case study sought to explore female teachers' and preservice students' experiences in secondary agricultural education to better understand their perceptions of barriers to…

  17. The Cultural Adaptation Process of Agricultural and Life Sciences Students on Short-Term Study Abroad Experiences

    ERIC Educational Resources Information Center

    Conner, Nathan William

    2013-01-01

    The purpose of this study was to explore how undergraduate students in a college of agricultural and life sciences experienced cultural adaptation during short-term study abroad programs. The specific objectives of this study were to describe how undergraduate students in the college of agricultural and life sciences experienced culture throughout…

  18. AN APPRAISAL OF INSTRUCTIONAL UNITS TO ENHANCE STUDENT UNDERSTANDING OF PROFIT-MAXIMIZING PRINCIPLES. RESEARCH SERIES IN AGRICULTURAL EDUCATION.

    ERIC Educational Resources Information Center

    BARKER, RICHARD L.; BENDER, RALPH E.

    TWENTY-TWO SELECTED OHIO VOCATIONAL AGRICULTURE TEACHERS AND 262 JUNIOR AND SENIOR VOCATIONAL AGRICULTURE STUDENTS PARTICIPATED IN A STUDY TO MEASURE THE RELATIVE EFFECTIVENESS OF NEWLY DEVELOPED INSTRUCTIONAL UNITS DESIGNED TO ENHANCE STUDENT UNDERSTANDING OF PROFIT-MAXIMIZING PRINCIPLES IN FARM MANAGEMENT. FARM MANAGEMENT WAS TAUGHT IN THE…

  19. Measuring the Interest of German Students in Agriculture: the Role of Knowledge, Nature Experience, Disgust, and Gender

    NASA Astrophysics Data System (ADS)

    Bickel, Malte; Strack, Micha; Bögeholz, Susanne

    2015-06-01

    Modern knowledge-based societies, especially their younger members, have largely lost their bonds to farming. However, learning about agriculture and its interrelations with environmental issues may be facilitated by students' individual interests in agriculture. To date, an adequate instrument to investigate agricultural interests has been lacking. Research has infrequently considered students' interest in agricultural content areas as well as influencing factors on students' agricultural interests. In this study, a factorial design of agricultural interests was developed combining five agricultural content areas and four components of individual interest. The instrument was validated with German fifth and sixth graders ( N = 1,085) using a variance decomposition confirmatory factor analysis model. The results demonstrated a second-order factor of general agricultural interest, with animal husbandry, arable farming, vegetable and fruit cropping, primary food processing, and agricultural engineering as discrete content areas of agricultural interest. Multiple regression analyses demonstrated that prior knowledge, garden experience, and disgust sensitivity are predictors of general agricultural interest. In addition, gender influenced interest in four of the five agricultural content areas. Implications are directed at researchers, teachers, and environmental educators concerning how to trigger and develop pupils' agricultural interests.

  20. Safety in High School Supervised Agricultural Experiences: Teachers' Training and Students' Injury Awareness.

    PubMed

    Pate, M L; Lawver, R G; Sorensen, T J

    2016-01-01

    This research study sought to gather evidence of school-based agriculture teachers' hazard perceptions, safety practices, training experiences, and awareness of student injuries related to supervised agricultural experience (SAE) programs. Teachers agreed that students should follow safety guidelines developed by the National Children's Center for Rural and Agricultural Safety and Health during SAE work. Approximately 66% (f = 153) of teachers reported having general training in first aid, CPR, and AED. Twenty participants (8.6%) indicated having no safety certifications or training. Abrasions, lacerations, bites/stings, and burns accounted for a majority of the student SAE-related injuries that were reported. There were 82 participants (35.5%) who stated that no injuries had been reported or they were not aware of any injuries that occurred. The majority of teachers (66%) had received some form offirst aid or first response training, but fewer teachers had received safety training for ATVs (f = 25, 10.8%), tractors (f = 48, 20.7%), and livestock (f = 39, 16.8%). Results indicated a disparity between required safe work habits and the types of hazardous tasks students should be allowed to complete alone while participating in SAE activities. It appears most responding teachers in this study agreed to allow students to operate equipment and machinery alone. Recommendations for teachers include attending professional development training specific to SAE safety and keeping records of any risk assessments conducted during SAE supervision. Further development of best practices for SAE supervision and safety are needed to assist agricultural education professionals in protecting and shaping our future leaders in agriculture. PMID:27024993

  1. Development of Competency-Based Vocational Agricultural Instructional Materials for Handicapped Students Enrolled in Regular Agriculture Programs Other Than Horticulture. Final Report.

    ERIC Educational Resources Information Center

    Baggett, Connie D.; And Others

    This report includes a description of a project to develop and field-test competency-based instructional materials for handicapped students enrolled in regular vocational agriculture programs; a list of project advisory personnel; the clusters of skills identified as appropriate for handicapped students enrolled in courses in dairy production,…

  2. The application of data mining technology in the quality and security of agricultural products

    NASA Astrophysics Data System (ADS)

    Li, Huaqin; Luo, Ying

    The quality and security of agricultural products is the hot issue with public attention in China and also one of the issues that Chinese government attaches great importance to. This paper describes the principle of data mining technology and based on the environmental information data of agricultural production and the quality-security testing data of agricultural products, analyses the application of data mining technology in the quality and security of agricultural products.

  3. Factors Influencing College Choice for Students in Agriculture Programs: A Comparative Study of Community College and Land-Grant University Students

    ERIC Educational Resources Information Center

    Cunningham, Shannon Kaye

    2013-01-01

    The purpose of this study was to identify factors that influenced college choice of students who recently enrolled (current freshmen and sophomores) in agriculture programs at Oklahoma's land-grant university, as compared to recently enrolled students (current freshmen and sophomores) in selected agriculture programs at public community colleges…

  4. Preparing students for higher education and careers in agriculture and related fields: An ethnography of an urban charter school

    NASA Astrophysics Data System (ADS)

    Henry, Kesha Atasha

    This study explored the preparation of students for higher education and careers in agriculturally-related fields at an urban charter high school. The data were collected through interviews, observations, and field notes. The data were analyzed by qualitative methodology with phenomenology as the theoretical framework. Findings indicated that administrators thought it was important to incorporate agricultural science courses into urban school curricula. They stated that agricultural science courses gave urban students a different way of looking at science and helped to enhance the science and technology focus of the school. Further, agricultural science courses helped to break urban students' stereotypes about agriculture and helped to bring in more state funding for educational programs. However they thought that it was more challenging to teach agricultural science in urban versus rural schools and they focused more on Science, Technology, Engineering, and Mathematics (STEM) related careers. The students had mixed views about higher education and careers in agriculture. This was based on their limited knowledge and stereotypes about agricultural majors and career options. The students highlighted several key reasons why they chose to enroll in agricultural science courses. This included the benefits of dual science credits and the ability to earn an associate degree upon successful completion of their program. Students also loved science and appreciated the science intensive nature of the agricultural courses. Additionally, they thought that the agricultural science courses were better than the other optional courses. The results also showed that electronic media such as radio and TV had a negative impact on students' perceptions about higher education and careers in agriculturally-related fields. Conclusions and recommendations are presented.

  5. Applications of Simulated Students: An Exploration.

    ERIC Educational Resources Information Center

    VanLehn, Kurt; And Others

    1994-01-01

    Explains the concept of a computerized simulated student as a model of human learning and explores three areas of application: for teachers, for students, and for instructional designers during formative evaluation. Technical limitations, existing prototype systems, and possible future systems are discussed for each area. (Contains 85 references.)…

  6. Teachers' Use of Test-Item Banks for Student Assessment in North Carolina Secondary Agricultural Education Programs

    ERIC Educational Resources Information Center

    Marshall, Joy Morgan

    2014-01-01

    Higher expectations are on all parties to ensure students successfully perform on standardized tests. Specifically in North Carolina agriculture classes, students are given a CTE Post Assessment to measure knowledge gained and proficiency. Prior to students taking the CTE Post Assessment, teachers have access to a test item bank system that…

  7. Starting a learning progression for agricultural literacy: A qualitative study of urban elementary student understandings of agricultural and science education benchmarks

    NASA Astrophysics Data System (ADS)

    Hess, Alexander Jay

    Science and agriculture professional organizations have argued for agricultural literacy as a goal for K-12 public education. Due to the complexity of our modern agri-food system, with social, economic, and environmental concerns embedded, an agriculturally literate society is needed for informed decision making, democratic participation, and system reform. While grade-span specific benchmarks for gauging agri-food system literacy have been developed, little attention has been paid to existing ideas individuals hold about the agri-food system, how these existing ideas relate to benchmarks, how experience shapes such ideas, or how ideas change overtime. Developing a body of knowledge on students' agri-food system understandings as they develop across K-12 grades can ground efforts seeking to promote a learning progression toward agricultural literacy. This study compares existing perceptions held by 18 upper elementary students from a large urban center in California to agri-food system literacy benchmarks and examines the perceptions against student background and experiences. Data were collected via semi-structured interviews and analyzed using the constant comparative method. Constructivist theoretical perspectives framed the study. No student had ever grown their own food, raised a plant, or cared for an animal. Participation in school fieldtrips to farms or visits to a relative's garden were agricultural experiences most frequently mentioned. Students were able to identify common food items, but could not elaborate on their origins, especially those that were highly processed. Students' understanding of post-production activities (i.e. food processing, manufacturing, or food marketing) was not apparent. Students' understanding of farms reflected a 1900's subsistence farming operation commonly found in a literature written for the primary grades. Students were unaware that plants and animals were selected for production based on desired genetic traits. Obtaining

  8. The Science Workbook of Student Research Projects in Food - Agriculture - Natural Resources.

    ERIC Educational Resources Information Center

    Darrow, Edward E., Ed.

    This workbook provides descriptions of research projects for high school and middle school science teachers and students. The projects can be used as demonstrations in the laboratory or classroom to help teachers illustrate the practical application of basic science principles. They can also be used by students, under the guidance of the teachers,…

  9. Transition of Agricultural Students from Undergraduate to Graduate School: The Minority Student's Dilemma.

    ERIC Educational Resources Information Center

    Jordan, Diann; Williamson, Lionel

    1990-01-01

    Provided is information that may enable minority students and land grant faculties and administrators to more effectively deal with the academic, financial, and emotional needs of minority students who are making the transition to graduate school. Highlighted are networking, mentoring, financial aid, and increasing sensitivity to the adjustment…

  10. Student Retention: Helping Underprepared Students Succeed at North Carolina Agricultural and Technical State University

    ERIC Educational Resources Information Center

    Lee, Melinda L.

    2013-01-01

    Higher education institutions have been challenged with retaining students until graduation over the past forty years. The greatest attrition occurs during the freshman-to-sophomore year. College administrators must evaluate data trends to determine the academic needs of enrolled students so effective programming can be developed and executed to…

  11. Alternative control technology document: Control of VOC emissions from the application of agricultural pesticides

    SciTech Connect

    Not Available

    1993-03-01

    In many States, some of the ozone nonattainment areas are comprised primarily of agricultural counties where a potentially significant contribution to the ozone may result from area sources of volatile organic compounds (VOC's) emissions. A potential source of VOC emissions in agricultural counties is the release of organic compounds from the application of agricultural pesticides. The report provides technical information that State and local agencies can consider while developing strategies for reducing VOC emissions.

  12. Application Of Colored Petri Net In Modeling Ofan Agricultural Enterprise Informationmanagement System

    NASA Astrophysics Data System (ADS)

    Zhang, Fangtian; Wang, Kaiyi; Sui, Jin; Liu, Chang; Liu, Zhongqiang

    Business system modeling of an agricultural enterprise is one of the difficulties in developing and researching an agricultural enterprise management information system. Given the inadequate description of concurrent and synchronal events in the traditional modeling methods, this paper presents a modeling method, which uses Colored Petri Net. The paper discusses the application of Colored Petri Net in system modeling with the example of an agricultural enterprise production management system model, and analyzes the feasibility and effectiveness of that model.

  13. Agriculture Education. Agriculture Structures.

    ERIC Educational Resources Information Center

    Stuttgart Public Schools, AR.

    This curriculum guide is designed for group instruction of secondary agricultural education students enrolled in one or two semester-long courses in agriculture structures. The guide presents units of study in the following areas: (1) shop safety, (2) identification and general use of hand tools, (3) power tools, (4) carpentry, (5) blueprint…

  14. Theme--Achieving 2020. Goal 3: All Students Are Conversationally Literate in Agriculture, Food, Fiber, and Natural Resource Systems.

    ERIC Educational Resources Information Center

    Trexler, Cary, Ed.

    2000-01-01

    Nine theme articles focus on the need for students to be conversationally literate about agriculture, food, fiber, and natural resources systems. Discusses the definition of conversational literacy, the human and institutional resources needed, and exemplary models for promoting literacy. (JOW)

  15. The Effects of the Student Teaching Experience on Cooperating Teachers in Secondary Agricultural Education Programs: A Case Study

    ERIC Educational Resources Information Center

    Edwards, Stephen Wyatt

    2012-01-01

    The purpose of this qualitative case study was to examine the effects of the student teaching experience on secondary agricultural education teachers. Eight of the thirteen participants in this study served as a cooperating teacher during the 2012 spring semester for pre-service teachers in agricultural education from a land-grant institution.…

  16. UNDERGRADUATE EDUCATION IN THE BIOLOGICAL SCIENCES FOR STUDENTS IN AGRICULTURE AND NATURAL RESOURCES, PROCEEDINGS OF A CONFERENCE.

    ERIC Educational Resources Information Center

    National Academy of Sciences - National Research Council, Washington, DC.

    REPORTED ARE THE PROCEEDINGS OF A 1966 CONFERENCE WHICH DEALT WITH UNDERGRADUATE EDUCATIONAL NEEDS FOR STUDENTS IN AGRICULTURE AND NATURAL RESOURCES. THE 167 EDUCATORS (MOSTLY DEANS AND DIRECTORS OF RESIDENT INSTRUCTION) WHO PARTICIPATED IN THE CONFERENCE REPRESENTED AGRICULTURE, RENEWABLE NATURAL RESOURCES, THE BIOLOGICAL SCIENCES, AND…

  17. Perceived Influencers of the Decline on Performance of Students in Botswana General Certificate of Secondary Education's Agriculture Examination Results

    ERIC Educational Resources Information Center

    Sibanda, Clyde; Hulela, Keba; Tselaesele, Nelson

    2016-01-01

    The purpose of the study was to investigate factors perceived to contribute to the decline of students' performance in the Botswana's General Certificate of Secondary Education (BGCSE) agriculture results. Ninety-one agriculture examiners were randomly sampled out of 100 teachers who were invited to mark the 2012 end of year examination scripts. A…

  18. Student Use of Applications Software.

    ERIC Educational Resources Information Center

    Lockheed, Marlaine E.; And Others

    This report studies the learning and use of computer applications programs--i.e., word processing programs, database management programs, and spreadsheets--in elementary and secondary school computer literacy courses. This study was designed to identify teachers' pedagogical assumptions and expectations underlying the use of applications software…

  19. THE EFFECT OF VOCATIONAL AGRICULTURE CLASS ENROLLMENT AND FARM EXPERIENCE ON ANIMAL SCIENCE KNOWLEDGE OF FIRST YEAR STUDENTS ENROLLED IN OKLAHOMA COLLEGES OF AGRICULTURE.

    ERIC Educational Resources Information Center

    BRUTON, JOHN C.

    A WRITTEN EXAMINATION WAS ADMINISTERED TO 605 FRESHMEN ENROLLED IN OKLAHOMA COLLEGES OFFERING AGRICULTURAL PROGRAMS TO DETERMINE WHETHER CERTAIN BACKGROUND EXPERIENCES CONTRIBUTED TO THE STUDENT'S KNOWLEDGE AND UNDERSTANDING OF MAJOR CONCEPTS IN ANIMAL SCIENCE, TO MAKE INFORMATION AVAILABLE TO THE ANIMAL SCIENCE DEPARTMENT OF OKLAHOMA STATE…

  20. Fate of triclosan in agricultural soils after biosolid applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Triclosan (5-chloro-2-[2,4-dichloro-phenoxy]-phenol (TCS) is a bactericidal compound that is added to a wide variety of household and personal care products. The consumer use of these products releases TCS into urban wastewater and this compound ends up in the environment when agricultural land is ...

  1. Application of Geo-refrenced Geophysical Measurements to Precision Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Crop yield varies within a field because conventional farming manages fields uniformly with no consideration for spatial variability. Site-specific management units (SSMUs), a key component of precision agriculture, have been proposed as a means of handling the spatial variability of various factor...

  2. Applications of WEPS and SWEEP to non-agricultural lands

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Soil erosion by wind is a serious problem on agricultural lands throughout the United States and the world. Dust from wind erosion obscures visibility and pollutes the air. It fills road ditches where it can impact water quality, causes automobile accidents, fouls machinery, and imperils animal an...

  3. Teaching biomedical applications to secondary students.

    PubMed

    Openshaw, S; Fleisher, A; Ljunggren, C

    1999-01-01

    Certain aspects of biomedical engineering applications lend themselves well to experimentation that can be done by high school students. This paper describes two experiments done during a six-week summer internship program in which two high school students used electrodes, circuit boards, and computers to mimic a sophisticated heart monitor and also to control a robotic car. Our experience suggests that simple illustrations of complex instrumentation can be effective in introducing adolescents to the biomedical engineering field. PMID:11143394

  4. Market assessment of photovoltaic power systems for agricultural applications in Nigeria

    NASA Astrophysics Data System (ADS)

    Staples, D.; Steingass, H.; Nolfi, J.

    1981-10-01

    The market potential for stand-alone photovoltaic systems in agriculture was studied. Information is presented on technical and economically feasible applications, and assessments of the business, government and financial climate for photovoltaic sales. It is concluded that the market for stand-alone systems will be large because of the availability of captial and the high premium placed on high reliability, low maintenance power systems. Various specific applications are described, mostly related to agriculture.

  5. Market assessment of photovoltaic power systems for agricultural applications in Nigeria

    NASA Technical Reports Server (NTRS)

    Staples, D.; Steingass, H.; Nolfi, J.

    1981-01-01

    The market potential for stand-alone photovoltaic systems in agriculture was studied. Information is presented on technical and economically feasible applications, and assessments of the business, government and financial climate for photovoltaic sales. It is concluded that the market for stand-alone systems will be large because of the availability of captial and the high premium placed on high reliability, low maintenance power systems. Various specific applications are described, mostly related to agriculture.

  6. Sewage sludge composting: quality assessment for agricultural application.

    PubMed

    Nafez, Amir Hossein; Nikaeen, Mahnaz; Kadkhodaie, Safora; Hatamzadeh, Maryam; Moghim, Sharareh

    2015-11-01

    In order to use sewage sludge (SS) composts in agriculture, it is extremely important to estimate the quality of compost products. The aim of this study was to investigate the quality of composted SS as a fertilizer and soil amendment especially in semi-arid areas. To determine the quality and agronomic value of the SS compost products, analyses on pH, electrical conductivity, organic matter content, C/N ratio, phytotoxicity, microbial load, and heavy metal content of composted anaerobically digested SS, with different proportions (1:1, 1:2, and 1:3 v/v) of green and dry plant waste, as bulking agents, were performed. The 1:2 and 1:3 mixtures of SS and green/dry plant waste were the most beneficial for composting, with final composts attaining high organic matter degradation and exhibiting low amounts of heavy metals, a relatively high germination index, and significant reduction of pathogens, suggesting the agricultural relevance of composted SS and green/dry plant waste at 1:2 and 1:3 (v/v) proportions. pH and electrical conductivity were also within the permissible limits. With respect to international standards, it appears that composted SS and green/dry plant waste at 1:2 and 1:3 proportions pose no threat to soil or plant quality if used in agriculture or land restoration. PMID:26508019

  7. Current status and future directions of precision agriculture for aerial application in the USA

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Precision aerial application in the USA is less than a decade old since the development of the first variable-rate aerial application system. Many areas of the United States rely on readily available agricultural airplanes or helicopters for pest management. Variable-rate aerial application provides...

  8. College Major Choice for Students of Color: Toward a Model of Recruitment for the Agricultural Education Profession

    ERIC Educational Resources Information Center

    Vincent, Stacy K.; Henry, Anna L.; Anderson, James C., II

    2012-01-01

    The purpose of this study was to gain a deeper understanding of the reasons students, identifying as non-White, made the decision to pursue a career in agricultural education. This phenomenological study allowed the researchers to obtain the overall phenomenon of the thought processes that encompass decisions of students of color when selecting an…

  9. Evaluating the Mathematics Achievement Levels of Students Participating in the Texas FFA Agricultural Mechanics Career Development Event

    ERIC Educational Resources Information Center

    Edney, Kirk Clowe

    2009-01-01

    The purpose of this study was to evaluate the effectiveness of a mathematics enrichment activity used to improve the mathematics performance of students relative to participation in the State Agricultural Mechanics Career Development Event (CDE) and in mandated assessments. The treatment group (13 schools, 43 students) participated in a…

  10. Assessment of Computer Technology Availability, Accessibility and Usage by Agricultural Education Student Teachers in Secondary Schools in Botswana

    ERIC Educational Resources Information Center

    Hulela, K.; Rammolai, M.; Mpatane, W.

    2014-01-01

    This study examines the availability, accessibility and usability of computer as a form of information and communication technologies (ICTs) by student teachers in secondary schools. 44 out of 51 student teachers of Agriculture responded to the questionnaire. Means and percentages were used to analyze the data to establish the availability,…

  11. A Comparison of Transfer and Nontransfer Agriculture and Home Economics Undergraduate Students: Academic Aptitude, Achievement, and Degree Persistence.

    ERIC Educational Resources Information Center

    Johnson, Donald M.

    1992-01-01

    Analysis of data on 82 agricultural and home economics transfer students from community colleges and 103 regular undergraduates revealed transfer students had lower academic aptitude; ag majors had higher ACT composite scores than home ec majors; transfers' cumulative quality point averages were equal to those earned by nontransfers; and transfers…

  12. Agriculture--Forestry, Biltmore Stick. Kit No. AG-107. Instructor's Manual and Student Learning Activity Guide. Revised.

    ERIC Educational Resources Information Center

    Simms, Barron; Johnson, Boston

    This two-volume set, consisting of an instructor's manual and a student learning activity guide, is designed for use in teaching vocational agriculture students basic forestry skills. Provided in the instructor's manual are guidelines concerning the duration of the activity; activity goals; a list of instructional objectives; a list of vocational…

  13. The CAP Approach to Modifying Vocational Programs for Handicapped Students. Vol. 1: Agriculture with an Example in Horticulture.

    ERIC Educational Resources Information Center

    Tindall, Lloyd W.; Morehouse, Nancy

    This combination teaching guide and student workbook, the first in a five-volume series (see note), presents an approach to teaching horticulture for handicapped students. The guide discusses a functional approach to modifying agriculture programs to accomodate cognitive, affective, and psychomotor (CAP) domain handicaps. The discussion centers on…

  14. Investigating the International Awareness of Students Meeting Their International Dimension Requirement through Course Offerings in a College of Agriculture

    ERIC Educational Resources Information Center

    Moriba, Samba; Edwards, M. Craig; Robinson, J. Shane; Cartmell, D. Dwayne, II; Henneberry, David M.

    2012-01-01

    Many U.S. universities are preparing their students to attain international awareness through various approaches. The College of Agricultural Sciences and Natural Resources (CASNR) at Oklahoma State University offers three international dimension undergraduate courses intended to provide students a formal educational opportunity to learn about…

  15. Student feedback to improve the United States Department of Agriculture Fresh Fruit and Vegetable Program

    PubMed Central

    Lin, Yi-Chun

    2016-01-01

    BACKGROUND/OBJECTIVES Fruit and vegetable consumption of children in the United States falls below recommendations. The U.S. Department of Agriculture Fresh Fruit and Vegetable Program (FFVP) is a national free-fruit and vegetable school distribution program designed to address this problem. This permanent, legislated program provides funding to qualified elementary schools for provision of additional fruit and vegetables outside of school meals. The objective of this study was to understand children's perceptions of FFVP after the intervention and formulate recommendations that may improve success of the intervention. SUBJECTS/METHODS Secondary data were obtained from 5,265 4th-6th graders at 51 randomly-selected FFVP intervention schools in Indiana. Anonymous questionnaires were completed late in the 2011-2012 academic year. Multilevel logistic regressions were used to determine associations between students' perceptions of program effects (4 close-ended items) and their preference toward the program. Content analysis was applied to a single open-ended item for program comments. RESULTS Over 47% of students reported greater intake of fruit and vegetables due to FFVP, and over 66% reported liking the program. Student-reported program effects were positively associated with preference for the program (P < 0.01). Themes that emerged during analysis of 3,811 comments, included, students liked: the opportunity to try different kinds of fruit and vegetables, types and flavors of fruits served, and benefits of eating fruit. Fewer students liked the types of vegetables and their benefits. A small group disliked the program citing poor flavor of vegetables and quality of fruits. Important suggestions for the program include serving more dipping sauces for vegetables, cooking vegetables, and providing a greater variety of produce. CONCLUSIONS The degree that students liked FFVP may predict the program's effects on fruit and vegetable intake. FFVP may become more acceptable

  16. Testing the effect of a science-enhanced curriculum on the science achievement and agricultural competency of secondary agricultural education students

    NASA Astrophysics Data System (ADS)

    Haynes, James Christopher

    Scope and Method of Study. The purpose of this study was to determine if a science-enhanced curriculum produced by the Center for Agricultural and Environmental Research and Training (CAERT) taught in a secondary level animal science or horticulture course would improve students' understanding of selected scientific principles significantly, when compared to students who were instructed using a traditional curriculum. A secondary purpose was to determine the effect that the science-enhanced CAERT curriculum would have on students' agricultural knowledge when compared to students who were instructed using a traditional curriculum. The design of the study was ex post facto, causal comparative because no random assignment of the treatment group occurred. Findings and Conclusions. No statistically significant difference was found between the treatment and comparison groups regarding science achievement. However, the mean score of the treatment group was slightly larger than the comparison group indicating a slightly higher achievement level; a "Small" effect size (d = .16) for this difference was calculated. It was determined that a statistically significant difference (p < .05) existed in agriculture competency scores in animal science (p = .001) and horticulture (p = .000) as a result of the treatment. Moreover, this was considered to be a "very large" effect (d = 1.18) in animal science and a "large" effect (d = .92) in horticulture. When considering student achievement in science, this study found that the use of the science-enhanced CAERT curriculum did not result in a statistically significant increase (p < .05) in student performance as determined by the TerraNova3 science proficiency examination. However, students who were instructed using the CAERT curriculum scored better overall than those who were instructed using a "traditional" curriculum.

  17. Modules in Agricultural Education for Agricultural Resources.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Bureau of Occupational and Career Curriculum Development.

    Each of the 31 curriculum modules in this packet for agricultural resources instruction contains a brief description of the module content, a list of the major division or units, the overall objective, objectives by units, content outline and suggested teaching methods, student application activities, and evaluation procedures. A list of resource…

  18. Modules in Agricultural Education for Agricultural Mechanics.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Bureau of Occupational and Career Curriculum Development.

    Each of the 38 curriculum modules in this packet for agricultural mechanics instruction contains a brief description of the module content, a list of the major divisions or units, the overall objectives, objectives by unit, content outline and suggested teaching methods, student application activities, and evaluation procedures. A listing of…

  19. Applications of CELSS technology to controlled environment agriculture

    NASA Technical Reports Server (NTRS)

    Bates, Maynard E.; Bubenheim, David L.

    1991-01-01

    Controlled environment agriculture (CEA) is defined as the use of environmental manipulation for the commercial production of organisms, whether plants or animals. While many of the technologies necessary for aquaculture systems in North America is nevertheless doubling approximately every five years. Economic, cultural, and environmental pressures all favor CEA over field production for many non-commodity agricultural crops. Many countries around the world are already dependent on CEA for much of their fresh food. Controlled ecological life support systems (CELSS), under development at ARC, KSC, and JSC expand the concept of CEA to the extent that all human requirements for food, oxygen, and water will be provided regenerated by processing of waste streams to supply plant inputs. The CELSS will likely contain plants, humans, possibly other animals, microorganisms and physically and chemical processors. In effect, NASA will create engineered ecosystems. In the process of developing the technology for CELSS, NASA will develop information and technology which will be applied to improving the efficiency, reliability, and cost effectiveness for CEA, improving its resources recycling capabilities, and lessening its environmental impact to negligible levels.

  20. Study of guidance techniques for aerial application of agricultural compounds

    NASA Technical Reports Server (NTRS)

    Caldwell, J. D.; Dimmock, P. B. A.; Watkins, R. H.

    1980-01-01

    Candidate systems were identified for evaluation of suitability in meeting specified accuracy requirements for a swath guidance system in an agriculture aircraft. Further examination reduced the list of potential candidates to a single category, i.e., transponder type systems, for detailed evaluation. Within this category three systems were found which met the basic accuracy requirements of the work statement. The Flying Flagman, the Electronic Flagging and the Raydist Director System. In addition to evaluating the systems against the specified requirements, each system was compared with the other two systems on a relative basis. The conclusions supported by the analyses show the Flying Flagman system to be the most suitable system currently available to meet the requirements.

  1. The Effectiveness of Instructional Methods Based on Learning Style Preferences of Agricultural Students: A Research Tool for Continuous Improvement for Faculty in Career and Technical Education (CTE) Programs

    ERIC Educational Resources Information Center

    Fazarro, Dominick E.; Pannkuk, Tim; Pavelock, Dwayne; Hubbard, Darcy

    2009-01-01

    This study was conducted to research learning style preferences of agriculture students. Specifically, the objectives which guided the study were: (1) to determine the learning style preferences of undergraduate agricultural students enrolled in a given Soil Science course and (2) to ascertain if there were differences in the students' course…

  2. A selected bibliography: Application of Landsat digital multispectral scanner data to agriculture, forestry, and range management

    USGS Publications Warehouse

    Rohde, Wayne G.

    1977-01-01

    This bibliography contains citations of selected publications and technical reports dealing with the application of Landsat digital data analysis techniques to agriculture, forestry, and range management problems. All of the citations were published between 1973 and 1977. The citations reference publications and reports which discuss specific analysis techniques and specific resource applications.

  3. Pesticide Applicator Certification Training, Manual No. 1a: Agricultural Pest Control. a. Plant.

    ERIC Educational Resources Information Center

    Allen, W. A.; And Others

    This manual provides information needed to meet the minimum standards for certification as an applicator of pesticides in the agricultural plant pest control category. Adapted for the State of Virginia, the text discusses: (1) the basics of insecticides; (2) insect pests; (3) selection and calibration of applicator equipment; and (4) the proper…

  4. Application of methane fermentation technology into organic wastes in closed agricultural system

    NASA Astrophysics Data System (ADS)

    Endo, Ryosuke; Kitaya, Yoshiaki

    Sustainable and recycling-based systems are required in space agriculture which takes place in an enclosed environment. Methane fermentation is one of the most major biomass conversion technologies, because (1) it provides a renewable energy source as biogas including methane, suitable for energy production, (2) the nutrient-rich solids left after digestion can be used as compost for agriculture. In this study, the effect of the application of methane fermentation technology into space agriculture on the material and energy cycle was investigated.

  5. Applications of TIMS data in agricultural areas and related atmospheric considerations

    NASA Technical Reports Server (NTRS)

    Pelletier, R. E.; Ochoa, M. C.

    1986-01-01

    While much of traditional remote sensing in agricultural research was limited to the visible and reflective infrared, advances in thermal infrared remote sensing technology are adding a dimension to digital image analysis of agricultural areas. The Thermal Infrared Multispectral Scanner (TIMS) an airborne sensor having six bands over the nominal 8.2 to 12.2 m range, offers the ability to calculate land surface emissivities unlike most previous singular broadband sensors. Preliminary findings on the utility of the TIMS for several agricultural applications and related atmospheric considerations are discussed.

  6. Tribological Consideration in Roller Mill Machines for Agriculture Applications

    NASA Astrophysics Data System (ADS)

    Al-Sandooq, J. M.; Yousif, B. F.; Jensen, T. A.

    2012-12-01

    Roller mill is an important part of machines for preparation of agricultural food stuffs. Tribological loading is the main type of load that should be considered when investigating the design failure of roller mills or of the low quality of grinding products. In the current work a comprehensive analysis of the roller design to withstand tribological was undertaken. Three-body abrasive loading (3BA) was found to be the key element to be considered in designing the roller. High stress three-body abrasion experiments were conducted on polyester and epoxy polymers to measure the wear and frictional characteristics of the selected material, different loads, durations and sand grain sizes were tested. Scanning electron microscopy and optical microscopy were used to categorize the damage on the worn surface of the materials and the causes of failure. The current results are compared with the performance of mild steel results based on the literature. The results revealed that polyester had relatively poor wear performance compared to epoxy and steel especially when large sand grains were used. The wear mechanisms on the polyester surface were macro-pitting, fracture, ploughing and defragmentation; while epoxy showed micro-pitting and defragmentation. Epoxy material performance indicates that it has potential for replacing metal rollers in the milling machine.

  7. Integrating Science in the Agriculture Curriculum: Agriculture Teacher Perceptions of the Opportunities, Barriers, and Impact on Student Enrollment

    ERIC Educational Resources Information Center

    Myers, Brian E.; Washburn, Shannon G.

    2008-01-01

    The essential nature of public school student performance on standardized examinations is becoming increasingly apparent. As schools across the nation are examined more closely based on the science achievement of students, career and technical education programs will be expected to contribute to this effort. Through the lens of Ajzen and Madden's…

  8. 42 CFR 60.51 - The student loan application.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... ASSISTANCE LOAN PROGRAM The School § 60.51 The student loan application. When the student completes his or her portion of the student loan application and submits it to the school, the school must do the following: (a) Accurately and completely fill out its portion of the HEAL application; (b) Verify, to...

  9. Student Preferences for M-Learning Application Characteristics

    ERIC Educational Resources Information Center

    Delialioglu, Ömer; Alioon, Yasaman

    2014-01-01

    This study attempts to find out students' expectations from mobile learning (m-learning) applications. The relationship between students' grade levels (freshman, sophomore, junior, senior) and their preferred m-learning application characteristics were analyzed. A questionnaire on students' preferences in m-learning applications was used as the…

  10. A Review: Controlled release systems for agricultural and food applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Controlled release systems are widely used in numerous applications. Polymers from natural resources, such as pectin, starch, zein and poly(lactic acid) have been used to construct carriers of bioactive substances and deliver them in a designed manner. The retention and release of volatile fragrance...

  11. Agricultural Waste as Sources for Mercury Adsorbents in Gas Applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Increased emphasis on reduction of mercury emissions from coal fired electric power plants have resulted in environmental regulations that may in the future require application of activated carbons as mercury sorbents. The sorbents could be injected into the flue gas stream where it adsorbs the mer...

  12. Agricultural By-products as Mercury Adsorbents in Gas Applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Increased emphasis on reduction of mercury emissions from coal fired electric power plans have resulted in environmental regulations that may in the future require application of activated carbons as mercury sorbents. The sorbents could be injected into the flue gas stream where is adsorbs the merc...

  13. Applicator Training Manual for: Agricultural Animal Pest Control.

    ERIC Educational Resources Information Center

    Christensen, Christian M.

    This manual discusses pesticide safety and environmental considerations, pesticide toxicity, residue potential, pesticide formulations, and application techniques. In addition, descriptions of, and methods for controlling insects and related pests that attack cattle, sheep and goats, swine, horses and other equines, and poultry are given. These…

  14. An airborne four-camera imaging system for agricultural applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This paper describes the design and testing of an airborne multispectral digital imaging system for remote sensing applications. The system consists of four high resolution charge coupled device (CCD) digital cameras and a ruggedized PC equipped with a frame grabber and image acquisition software. T...

  15. Vocational Agriculture Education. Agricultural Mechanics.

    ERIC Educational Resources Information Center

    Smith, Eddie; And Others

    To assist teachers in agricultural mechanics in providing comprehensive instruction to their students, this curriculum guide treats both the mechanical skills and knowlege necessary for this specialized area. Six sections are included, as follow: orientation and safety; agricultural mechanics skills; agricultural power and machinery; agricultural…

  16. Improving student learning in calculus through applications

    NASA Astrophysics Data System (ADS)

    Young, C. Y.; Georgiopoulos, M.; Hagen, S. C.; Geiger, C. L.; Dagley-Falls, M. A.; Islas, A. L.; Ramsey, P. J.; Lancey, P. M.; Straney, R. A.; Forde, D. S.; Bradbury, E. E.

    2011-07-01

    Nationally only 40% of the incoming freshmen Science, Technology, Engineering and Mathematics (STEM) majors are successful in earning a STEM degree. The University of Central Florida (UCF) EXCEL programme is a National Science Foundation funded STEM Talent Expansion Programme whose goal is to increase the number of UCF STEM graduates. One of the key requirements for STEM majors is a strong foundation in Calculus. To improve student learning in calculus, the EXCEL programme developed two special courses at the freshman level called Applications of Calculus I (Apps I) and Applications of Calculus II (Apps II). Apps I and II are one-credit classes that are co-requisites for Calculus I and II. These classes are teams taught by science and engineering professors whose goal is to demonstrate to students where the calculus topics they are learning appear in upper level science and engineering classes as well as how faculty use calculus in their STEM research programmes. This article outlines the process used in producing the educational materials for the Apps I and II courses, and it also discusses the assessment results pertaining to this specific EXCEL activity. Pre- and post-tests conducted with experimental and control groups indicate significant improvement in student learning in Calculus II as a direct result of the application courses.

  17. Diverse Applications of Electronic-Nose Technologies in Agriculture and Forestry

    PubMed Central

    Wilson, Alphus D.

    2013-01-01

    Electronic-nose (e-nose) instruments, derived from numerous types of aroma-sensor technologies, have been developed for a diversity of applications in the broad fields of agriculture and forestry. Recent advances in e-nose technologies within the plant sciences, including improvements in gas-sensor designs, innovations in data analysis and pattern-recognition algorithms, and progress in material science and systems integration methods, have led to significant benefits to both industries. Electronic noses have been used in a variety of commercial agricultural-related industries, including the agricultural sectors of agronomy, biochemical processing, botany, cell culture, plant cultivar selections, environmental monitoring, horticulture, pesticide detection, plant physiology and pathology. Applications in forestry include uses in chemotaxonomy, log tracking, wood and paper processing, forest management, forest health protection, and waste management. These aroma-detection applications have improved plant-based product attributes, quality, uniformity, and consistency in ways that have increased the efficiency and effectiveness of production and manufacturing processes. This paper provides a comprehensive review and summary of a broad range of electronic-nose technologies and applications, developed specifically for the agriculture and forestry industries over the past thirty years, which have offered solutions that have greatly improved worldwide agricultural and agroforestry production systems. PMID:23396191

  18. Effectiveness of a Science Agricultural Summer Experience (SASE) in Recruiting Students to Natural Resources Management

    NASA Astrophysics Data System (ADS)

    Martinez, Edward; Lindline, Jennifer; Petronis, Michael S.; Pilotti, Maura

    2012-12-01

    The Bureau of Labor Statistics projects an increase in Natural Resource Management (NRM) jobs within the next 10 years due to baby-boomer retirements and a 12% increase in demand for these occupations. Despite this trend, college enrollment in NRM disciplines has declined. Even more critical is the fact that the soon-to-be-majority Hispanic population is underrepresented in NRM disciplines. The goal of the present study was to determine if an in-residence, two-week, summer science program for underrepresented minorities would not only increase interest in science, actual science knowledge, and perceived science knowledge, but also have an overall impact on underrepresented minority students' decisions to attend college, major in a scientific discipline and pursue a career in science. During a four-year period, 76 high school students participated in a Science Agricultural Summer Experience (SASE) in Northern New Mexico. A pre/post science-knowledge exam and satisfaction survey were administered to participants. We demonstrate that participants improved significantly ( p < .05) in all areas measured. In particular, comfort with science field and lab activities, science knowledge and perceived science knowledge were enhanced after exposure to the program. Students not only found science exciting and approachable after participation, but also exhibited increased interest in pursuing a degree and career in science. Of the 76 SASE participants within graduation age ( n = 44), all graduated from high school; and 86% enrolled in college. These findings suggest that the implemented SASE initiative was effective in recruiting and increasing the confidence and abilities of underrepresented minority students in science.

  19. Aerial applications dispersal systems control requirements study. [agriculture

    NASA Technical Reports Server (NTRS)

    Bauchspies, J. S.; Cleary, W. L.; Rogers, W. F.; Simpson, W.; Sanders, G. S.

    1980-01-01

    Performance deficiencies in aerial liquid and dry dispersal systems are identified. Five control system concepts are explored: (1) end of field on/off control; (2) manual control of particle size and application rate from the aircraft; (3) manual control of deposit rate on the field; (4) automatic alarm and shut-off control; and (5) fully automatic control. Operational aspects of the concepts and specifications for improved control configurations are discussed in detail. A research plan to provide the technology needed to develop the proposed improvements is presented along with a flight program to verify the benefits achieved.

  20. Fundamentals of dielectric properties measurements and agricultural applications.

    PubMed

    Nelson, Stuart O

    2010-01-01

    Dielectrics and dielectric properties are defined generally and dielectric measurement methods and equipment are described for various frequency ranges from audio frequencies through microwave frequencies. These include impedance and admittance bridges, resonant frequency, transmission-line, and free-space methods in the frequency domain and time-domain and broadband techniques. Many references are cited describing methods in detail and giving sources of dielectric properties data. Finally a few applications for such data are presented and sources of tabulated and dielectric properties data bases are identified. PMID:21721322

  1. APPLICATIONS OF AGRICULTURAL SYSTEM MODELS IN ASSESSING AND MANAGING CONTAMINATION OF THE SOIL-WATER-ATMOSPHERE CONTINUUM IN AGRICULTURE

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In the last three decades, there has been a growing public concern about the adverse effects of modern agriculture on environmental quality and soil-water resources. In the mid-1980's, the USDA, Agricultural Research Service (ARS) identified the need for models of whole agricultural systems that wi...

  2. Application of Agricultural System Models in Assessing and Managing Contamination of Soil-Water-Atmosphere Continuum in Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In the last three decades, there has been a growing public concern about the adverse effects of modern agriculture on environmental quality and soil-water resources. In the mid-1980s, the USDA, Agricultural Research Service (ARS) identified the need for models of whole agricultural systems th...

  3. Market assessment of photovoltaic power systems for agricultural applications in the Philippines

    NASA Technical Reports Server (NTRS)

    Cabraal, R. A.; Delasanta, D.; Burrill, G.

    1981-01-01

    The market potential in the Philippines for stand alone photovoltaic (P/V) systems in agriculture was assessed. Applications include: irrigation, postharvest operation, food and fiber processing and storage, and livestock and fisheries operations. Power and energy use profiles for many applications as well as assessments of business, government and financial climate for P/V sales are described. Many characteristics of the Philippine agriculture and energy sector favorably influence the use of P/V systems. However, serious and significant barriers prevent achieving the technically feasible, cost competitive market for P/V systems in the agricultural sector. The reason for the small market is the limited availability capital for financing P/V systems. It is suggested that innovative financing schemes and promotional campaigns should be devised.

  4. Photovoltaic applications definition and photovoltaic system definition study in the agricultural sector. Volume 2: Technical results

    NASA Astrophysics Data System (ADS)

    Mengel, R. W.; Nadolski, T. P.; Sparks, D. C.; Young, S. K.; Yingst, A.

    1980-05-01

    This volume describes the technical results of the study of potential photovoltaic (P/V) applications in US agriculture. The results presented address all technical aspects of the program and include a summary of agricultural energy consumption. The objectives of the technical effort reported were to: (1) identify and characterize agricultural energy demands that can effectively use P/V power systems; (2) develop effective P/V system designs for the four most promising applications; (3) determine performance and cost estimates for the designs; and (4) recommend systems for early test and demonstration and critical issues requiring further systems studies. The farms chosen for conceptual design include; (1) poultry layer farm, (2) hog production farm, (3) beef feedlot, and (4) year round vegetable farm.

  5. Market assessment of photovoltaic power systems for agricultural applications in the Philippines

    NASA Astrophysics Data System (ADS)

    Cabraal, R. A.; Delasanta, D.; Burrill, G.

    1981-04-01

    The market potential in the Philippines for stand alone photovoltaic (P/V) systems in agriculture was assessed. Applications include: irrigation, postharvest operation, food and fiber processing and storage, and livestock and fisheries operations. Power and energy use profiles for many applications as well as assessments of business, government and financial climate for P/V sales are described. Many characteristics of the Philippine agriculture and energy sector favorably influence the use of P/V systems. However, serious and significant barriers prevent achieving the technically feasible, cost competitive market for P/V systems in the agricultural sector. The reason for the small market is the limited availability capital for financing P/V systems. It is suggested that innovative financing schemes and promotional campaigns should be devised.

  6. Assessment of Knowledge and Competences in Agricultural Engineering Acquired by the Senior Secondary School Students for Farm Mechanisation

    ERIC Educational Resources Information Center

    Ndem, Joseph; Ogba, Ernest; Egbe, Benjamin

    2015-01-01

    This study was designed to assess the agricultural engineering knowledge and competencies acquired by the senior secondary students for farm mechanization in technical colleges in Ebonyi state of Nigeria. A survey research design was adopted for the study. Three research questions and two null hypotheses guided the study. The population of the…

  7. Verbal Immediacy and Audio/Video Technology Use in Online Course Delivery: What Do University Agricultural Education Students Think?

    ERIC Educational Resources Information Center

    Murphrey, Theresa Pesl; Arnold, Shannon; Foster, Billye; Degenhart, Shannon H.

    2012-01-01

    As demand for online course delivery increases, it is imperative that those courses be delivered in an effective and efficient manner. While technologies are offering increasingly new and innovative tools to deliver courses, it is not known which of these tools are perceived as useful and beneficial by university agricultural education students.…

  8. A Qualitative Study of Technology-Based Training in Organizations that Hire Agriculture and Life Sciences Students

    ERIC Educational Resources Information Center

    Bedgood, Leslie; Murphrey, Theresa Pesl; Dooley, Kim E.

    2008-01-01

    Technological advances have created unlimited opportunities in education. Training and technology have merged to create new methods referred to as technology-based training. The purpose of this study was to identify organizations that hire agriculture and life sciences students for positions involving technology-based training and identify…

  9. Effects of Two Instructional Techniques Used with the Ford Power Train Simulator on the Performance of Mississippi Vocational Agriculture Students.

    ERIC Educational Resources Information Center

    Perritt, Roger Dale; Shinn, Glen C.

    A Mississippi study examined the effects of two instructional techniques using the Ford power train unit as an instructional aid. Eight schools were randomly selected from a population of 33 vocational agricultural departments. Three schools with 10 students from each school were randomly selected and assigned to treatment A, traditional…

  10. MyAgRecord: An Online Career Portfolio Management Tool for High School Students Conducting Supervised Agricultural Experience Programs.

    ERIC Educational Resources Information Center

    Emis, Larry; Dillingham, John

    Texas's online career portfolio management tool for high school students participating in supervised agricultural experience programs (SAEPs) was developed in 1998 by a committee of Texas high school teachers of agriscience and Texas Education Agency personnel. The career portfolio management tool reflects General Accepted Accounting Principles…

  11. Agro-Students' Appraisal of Online Registration of Academic Courses in the Federal University of Agriculture Abeokuta, Ogun State Nigeria

    ERIC Educational Resources Information Center

    Lawal-Adebowale, O. A.; Oyekunle, O.

    2014-01-01

    With integration of information technology tool for academic course registration in the Federal University of Agriculture, Abeokuta, the study assessed the agro-students' appraisal of the online tool for course registration. A simple random sampling technique was used to select 325 agrostudents; and validated and reliable questionnaire was used…

  12. Student Perceptions of Agricultural Education Programme Processes at Selected High Schools in KwaZulu-Natal Province, South Africa

    ERIC Educational Resources Information Center

    Kidane, T. T.; Worth, S. H.

    2014-01-01

    Purpose: This study investigates student perceptions of different aspects of Agricultural Education and Training (AET) programme processes that have been offered in secondary schools by the formal educational sector in the province of KwaZulu-Natal, South Africa. The study seeks to identify the existing shortcomings in the implementation of the…

  13. The Effect of an Interest Approach on Knowledge, Attitudes, and Engagement of High School Agricultural Science Students

    ERIC Educational Resources Information Center

    Johnston, Tiffany L.; Roberts, T. Grady

    2011-01-01

    The purpose of this study was to examine the effects of using an interest approach at the beginning of a lesson on student knowledge, attitudes, and engagement in an agricultural science classroom. A total of four classes were randomly assigned and administered one lesson with an interest approach and one lesson without an interest approach.…

  14. Home Influences on the Academic Performance of Agricultural Science Students in Ikwuano Local Government Area of Abia State, Nigeria

    ERIC Educational Resources Information Center

    Ndirika, Maryann C.; Njoku, U. J.

    2012-01-01

    This study was conducted to investigate the home influences on the academic performance of agricultural science secondary school students in Ikwuano Local Government Area of Abia State. The instrument used in data collection was a validated questionnaire structured on a two point rating scale. Simple random sampling technique was used to select…

  15. Lifetime Organophosphorous Insecticide Used among Private Pesticide Applicators in the Agricultural Health Study

    EPA Science Inventory

    Organophosphorous insecticides (OPs) are the most commonly used insecticides in US agriculture, but little information is available regarding specific OP use by individual farmers. We describe OP use for licensed private pesticide applicators from Iowa and North Carolina in the Ag...

  16. Development and application of modern agricultural biotechnology in Botswana: the potentials, opportunities and challenges.

    PubMed

    Batlang, Utlwang; Tsurupe, Gorata; Segwagwe, Amogelang; Obopile, Motshwari

    2014-07-01

    In Botswana, approximately 40% of the population live in rural areas and derive most of their livelihood from agriculture by keeping livestock and practising arable farming. Due to the nature of their farming practises livestock and crops are exposed to diseases and environmental stresses. These challenges offer opportunities for application of biotechnology to develop adaptable materials to the country's environment. On the other hand, the perceived risk of genetically modified organisms (GMOs) has dimmed the promise of the technology for its application in agriculture. This calls for a holistic approach to the application of biotechnology to address issues of biosafety of GMOs. We have therefore assessed the potentials, challenges and opportunities to apply biotechnology with specific emphasis on agriculture, taking cognisance of requirement for its research, development and application in research and teaching institutions. In order to achieve this, resource availability, infrastructure, human and laboratory requirements were analyzed. The analysis revealed that the country has the capacity to carry out research in biotechnology in the development and production of genetically modified crops for food and fodder crops. These will include gene discovery, genetic transformation and development of systems to comply with the world regulatory framework on biosafety. In view of the challenges facing the country in agriculture, first generation biotech crops could be released for production. Novel GM products for development may include disease diagnosis kits, animal disease vaccines, and nutrient use efficiency, drought, and pest and disease resistant food and fodder crops. PMID:25437237

  17. WASTE MINIMIZATION FOR NON-AGRICULTURAL PESTICIDE APPLICATORS: EPA'S POLLUTION PREVENTION GUIDE

    EPA Science Inventory

    U.S. EPA's Office of Research and Development is preparing a guide to be published later this year for non-agricultural pesticide applicators which will provide specific information about waste minimization for pesticide users in industries such as commercial lawn care, structura...

  18. 20 CFR 655.1301 - Applications for temporary employment certification in agriculture.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 3 2011-04-01 2011-04-01 false Applications for temporary employment certification in agriculture. 655.1301 Section 655.1301 Employees' Benefits EMPLOYMENT AND TRAINING ADMINISTRATION, DEPARTMENT OF LABOR TEMPORARY EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES Labor Certification Process for Temporary...

  19. Application of the Doppler lidar system to agricultural burning and air-sea interactions

    NASA Technical Reports Server (NTRS)

    Fitzjarrald, D.

    1980-01-01

    The Doppler lidar system is potentially a very powerful measurement system. Three areas concerning the system are discussed: (1) error analysis of the system to verify the results; (2) application of the system to agricultural burning in California central valley; and (3) oceanographic possibilities of the system.

  20. Apply Pesticides Correctly, A Guide for Commercial Applicators: Agricultural Pest Control -- Animal.

    ERIC Educational Resources Information Center

    Wamsley, Mary Ann, Ed.; Vermeire, Donna M., Ed.

    This guide contains basic information to meet specific standards for pesticide applicators. The text is concerned with the common pests of agricultural animals such as flies, ticks, bots, lice and mites. Methods for controlling these pests and appropriate pesticides are discussed. (CS)

  1. Remote sensing with simulated unmanned aircraft systems for precision agriculture applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    An important application of unmanned aircraft systems (UAS) may be remote-sensing for precision agriculture, because of its ability to acquire images with very small pixel sizes from low altitude flights. The objective of this study was to compare pixel sampling with plot-scale metrics for the remo...

  2. APPROACHES FOR MEASURING APPLICATOR EXPOSURE IN THE AGRICULTURAL HEALTH STUDY/PESTICIDE EXPOSURE STUDY

    EPA Science Inventory

    The Agricultural Health Study (AHS) is a prospective epidemiologic study of a large cohort of pesticide applicators and their spouses in Iowa and North Carolina. The Pesticide Exposure Study is a sub-study to evaluate exposure factors and to provide data to assess exposure cla...

  3. A Half Century of Research on Agricultural Applications for RF and Microwave Dielectric Heating

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Basic principles of radio-frequency and microwave dielectric heating are presented, and research reports and reviews published over the past 50 or 60 years are identified for various dielectric heating applications that have been explored for potential use in the field of agriculture. Included are ...

  4. The use of LANDSAT digital data and computer-implemented techniques for an agricultural application

    NASA Technical Reports Server (NTRS)

    Joyce, A. T.; Griffin, R. H., II

    1978-01-01

    Agricultural applications procedures are described for use of LANDSAT digital data and other digitalized data (e.g., soils). The results of having followed these procedures are shown in production estimates for cotton and soybeans in Washington County, Mississippi. Examples of output products in both line printer and map formats are included, and a product adequacy assessment is made.

  5. Proposal of Interactive Applications to Enhance Student's Spatial Perception

    ERIC Educational Resources Information Center

    Moran, Samuel; Rubio, Ramon; Gallego, Ramon; Suarez, Javier; Martin, Santiago

    2008-01-01

    The aim of this series of applications is to enhance students' spatial perception capacity by means of exercises that require the student to concentrate on mentally recreating the figures represented. Each application is designed with an increasing level of difficulty, designed to increase the students' concentration and train their spatial…

  6. Status of Gifted Students in Vocational Agriculture Classes in the United States. Final Report. Teacher Education Series, Volume 21, Number 2.

    ERIC Educational Resources Information Center

    Pandya, Himanshu S.

    The number of gifted students in high school vocational agriculture classes has increased four-fold in the last five years, according to a study of enrollment, methods of identification, curricular, and co-curricular and career awareness activities available to gifted students in schools offering vocational agriculture in the United States. A…

  7. Identification of high payoff research for more efficient applicator helicopters in agriculture and forestry

    NASA Technical Reports Server (NTRS)

    Waters, K. T.

    1979-01-01

    The results of a study of the uses of helicopters in agriculture and forestry in the United States are discussed. Comparisons with agricultural airplanes are made in terms of costs of aerial application to the growers. An analysis of cost drivers and potential improvements to helicopters that will lower costs is presented. Future trends are discussed, and recommendations for research are outlined. Operational safety hazards and accident records are examined, and problem areas are identified. Areas where research and development are needed to provide opportunities for lowering costs while increasing productivity are analyzed.

  8. Computer Assisted Instruction in Agricultural Education.

    ERIC Educational Resources Information Center

    Hudson, C. Jordan

    1980-01-01

    The author discusses the impact of the computer upon education and describes specific applications of automation for agricultural education, including drill and practice, testing, simulation, and student records maintenance. (SK)

  9. [Application of THz technology to nondestructive detection of agricultural product quality].

    PubMed

    Jiang, Yu-ying; Ge, Hong-yi; Lian, Fei-yu; Zhang, Yuan; Xia, Shan-hong

    2014-08-01

    With recent development of THz sources and detector, applications of THz radiation to nondestructive testing and quality control have expanded in many fields, such as agriculture, safety inspection and quality control, medicine, biochemistry, communication etc. Compared with other detection technique, being a new kind of technique, THz radiation has low energy, good perspectivity, and high signal-to-noise ratio, and thus can obtain physical, chemical and biological information. This paper first introduces the basic concept of THz radiation and the major properties, then gives an extensive review of recent research progress in detection of the quality of agricultural products via THz technique, analyzes the existing shortcomings of THz detection and discusses the outlook of potential application, finally proposes the new application of THz technique to detection of quality of stored grain. PMID:25474932

  10. [Application of THz technology to nondestructive detection of agricultural product quality].

    PubMed

    Jiang, Yu-ying; Ge, Hong-yi; Lian, Fei-yu; Zhang, Yuan; Xia, Shan-hong

    2014-08-01

    With recent development of THz sources and detector, applications of THz radiation to nondestructive testing and quality control have expanded in many fields, such as agriculture, safety inspection and quality control, medicine, biochemistry, communication etc. Compared with other detection technique, being a new kind of technique, THz radiation has low energy, good perspectivity, and high signal-to-noise ratio, and thus can obtain physical, chemical and biological information. This paper first introduces the basic concept of THz radiation and the major properties, then gives an extensive review of recent research progress in detection of the quality of agricultural products via THz technique, analyzes the existing shortcomings of THz detection and discusses the outlook of potential application, finally proposes the new application of THz technique to detection of quality of stored grain. PMID:25508711

  11. RETINAL DEGENERATION AND OTHER EYE DISORDERS IN WIVES OF FARMER PESTICIDE APPLICATORS ENROLLED IN THE AGRICULTURAL HEALTH STUDY.

    EPA Science Inventory

    This manuscript describes an epidemiological investigation of the wives of licensed pesticide applicators who are enrolled in the Agricultural Health Study, a large ongoing epidemiological study of pesticide applicators and their families in North Carolina and Iowa. The Agricult...

  12. Developing Programs of Supervised Agricultural Experience. Developing an SAE Program Using the Missouri Agricultural Record Book for Secondary Students. Analyzing the SAE Program Using the Missouri Farm Business Record Book. Instructor's Guide. Volume 21, Number 9.

    ERIC Educational Resources Information Center

    Admire, Myron

    This curriculum guide to the Supervised Agricultural Experience (SAE) program contains four units of insturctor's materials as follows: Unit 1: Developing an SAE Program; Unit 2: Using the Missouri Agricultural Record Book for Secondary Students; Unit 3: Analyzing the SAE Program; and Unit 4: Using the Missouri Farm Business Record Book. The…

  13. Agriculture, summary

    NASA Technical Reports Server (NTRS)

    Baldwin, R.

    1975-01-01

    Applications of remotely sensed data in agriculture are enumerated. These include: predictions of forage for range animal consumption, forest management, soil mapping, and crop inventory and management.

  14. Developing Ubiquitous Sensor Network Platform Using Internet of Things: Application in Precision Agriculture

    PubMed Central

    Ferrández-Pastor, Francisco Javier; García-Chamizo, Juan Manuel; Nieto-Hidalgo, Mario; Mora-Pascual, Jerónimo; Mora-Martínez, José

    2016-01-01

    The application of Information Technologies into Precision Agriculture methods has clear benefits. Precision Agriculture optimises production efficiency, increases quality, minimises environmental impact and reduces the use of resources (energy, water); however, there are different barriers that have delayed its wide development. Some of these main barriers are expensive equipment, the difficulty to operate and maintain and the standard for sensor networks are still under development. Nowadays, new technological development in embedded devices (hardware and communication protocols), the evolution of Internet technologies (Internet of Things) and ubiquitous computing (Ubiquitous Sensor Networks) allow developing less expensive systems, easier to control, install and maintain, using standard protocols with low-power consumption. This work develops and test a low-cost sensor/actuator network platform, based in Internet of Things, integrating machine-to-machine and human-machine-interface protocols. Edge computing uses this multi-protocol approach to develop control processes on Precision Agriculture scenarios. A greenhouse with hydroponic crop production was developed and tested using Ubiquitous Sensor Network monitoring and edge control on Internet of Things paradigm. The experimental results showed that the Internet technologies and Smart Object Communication Patterns can be combined to encourage development of Precision Agriculture. They demonstrated added benefits (cost, energy, smart developing, acceptance by agricultural specialists) when a project is launched. PMID:27455265

  15. Developing Ubiquitous Sensor Network Platform Using Internet of Things: Application in Precision Agriculture.

    PubMed

    Ferrández-Pastor, Francisco Javier; García-Chamizo, Juan Manuel; Nieto-Hidalgo, Mario; Mora-Pascual, Jerónimo; Mora-Martínez, José

    2016-01-01

    The application of Information Technologies into Precision Agriculture methods has clear benefits. Precision Agriculture optimises production efficiency, increases quality, minimises environmental impact and reduces the use of resources (energy, water); however, there are different barriers that have delayed its wide development. Some of these main barriers are expensive equipment, the difficulty to operate and maintain and the standard for sensor networks are still under development. Nowadays, new technological development in embedded devices (hardware and communication protocols), the evolution of Internet technologies (Internet of Things) and ubiquitous computing (Ubiquitous Sensor Networks) allow developing less expensive systems, easier to control, install and maintain, using standard protocols with low-power consumption. This work develops and test a low-cost sensor/actuator network platform, based in Internet of Things, integrating machine-to-machine and human-machine-interface protocols. Edge computing uses this multi-protocol approach to develop control processes on Precision Agriculture scenarios. A greenhouse with hydroponic crop production was developed and tested using Ubiquitous Sensor Network monitoring and edge control on Internet of Things paradigm. The experimental results showed that the Internet technologies and Smart Object Communication Patterns can be combined to encourage development of Precision Agriculture. They demonstrated added benefits (cost, energy, smart developing, acceptance by agricultural specialists) when a project is launched. PMID:27455265

  16. Applications of color machine vision in the agricultural and food industries

    NASA Astrophysics Data System (ADS)

    Zhang, Min; Ludas, Laszlo I.; Morgan, Mark T.; Krutz, Gary W.; Precetti, Cyrille J.

    1999-01-01

    Color is an important factor in Agricultural and the Food Industry. Agricultural or prepared food products are often grade by producers and consumers using color parameters. Color is used to estimate maturity, sort produce for defects, but also perform genetic screenings or make an aesthetic judgement. The task of sorting produce following a color scale is very complex, requires special illumination and training. Also, this task cannot be performed for long durations without fatigue and loss of accuracy. This paper describes a machine vision system designed to perform color classification in real-time. Applications for sorting a variety of agricultural products are included: e.g. seeds, meat, baked goods, plant and wood.FIrst the theory of color classification of agricultural and biological materials is introduced. Then, some tools for classifier development are presented. Finally, the implementation of the algorithm on real-time image processing hardware and example applications for industry is described. This paper also presented an image analysis algorithm and a prototype machine vision system which was developed for industry. This system will automatically locate the surface of some plants using digital camera and predict information such as size, potential value and type of this plant. The algorithm developed will be feasible for real-time identification in an industrial environment.

  17. Application of Medium and Seasonal Flood Forecasts for Agriculture Damage Assessment

    NASA Astrophysics Data System (ADS)

    Fakhruddin, Shamsul; Ballio, Francesco; Menoni, Scira

    2015-04-01

    Early warning is a key element for disaster risk reduction. In recent decades, major advancements have been made in medium range and seasonal flood forecasting. This progress provides a great opportunity to reduce agriculture damage and improve advisories for early action and planning for flood hazards. This approach can facilitate proactive rather than reactive management of the adverse consequences of floods. In the agricultural sector, for instance, farmers can take a diversity of options such as changing cropping patterns, applying fertilizer, irrigating and changing planting timing. An experimental medium range (1-10 day) and seasonal (20-25 days) flood forecasting model has been developed for Thailand and Bangladesh. It provides 51 sets of discharge ensemble forecasts of 1-10 days with significant persistence and high certainty and qualitative outlooks for 20-25 days. This type of forecast could assist farmers and other stakeholders for differential preparedness activities. These ensembles probabilistic flood forecasts have been customized based on user-needs for community-level application focused on agriculture system. The vulnerabilities of agriculture system were calculated based on exposure, sensitivity and adaptive capacity. Indicators for risk and vulnerability assessment were conducted through community consultations. The forecast lead time requirement, user-needs, impacts and management options for crops were identified through focus group discussions, informal interviews and community surveys. This paper illustrates potential applications of such ensembles for probabilistic medium range and seasonal flood forecasts in a way that is not commonly practiced globally today.

  18. VOCATIONAL AGRICULTURE.

    ERIC Educational Resources Information Center

    California State Dept. of Education, Sacramento. Research Coordinating Unit.

    TO ASSIST THOSE WHO MAKE DECISIONS RELATING TO EDUCATIONAL PROGRAMS IN AGRICULTURE, RECENT RESEARCH IN VOCATIONAL AGRICULTURE IS SUMMARIZED. A 1963 STUDY TREATS THE RELATIONSHIP BETWEEN WORK EXPERIENCE AND STUDENT CHARACTERISTICS, PLANS, AND ASPIRATIONS. STUDIES ON POST-SECONDARY EDUCATION CONCERN GUIDELINES FOR TECHNICIAN PROGRAMS, JUSTIFICATION…

  19. Study on ozone treatment of soil for agricultural application of surface dielectric barrier discharge

    NASA Astrophysics Data System (ADS)

    Nagatomo, Takuya; Abiru, Tomoya; Mitsugi, Fumiaki; Ebihara, Kenji; Nagahama, Kazuhiro

    2016-01-01

    Recently, application of plasma technologies to the agricultural field has attracted much interest because residual pesticides and excessive nitrogen oxides contained in plants, soil, and groundwater have become a serious issue worldwide. Since almost all of the atmospheric discharge plasma generates ozone, the effects of ozone are among the key factors for their agricultural applications. We have proposed the use of ozone generated using surface barrier discharge plasma for soil disinfection or sterilization. In this work, the ozone consumption coefficient and diffusion coefficient in soil were measured by the ultraviolet absorption method. The pH(H2O) and amount of nitrogen nutrient in soil after ozone diffusion treatment were studied and plant growth was observed simultaneously. The effect of ozone treatment on the amount of DNA in soil was also investigated and compared with that determined from the obtained ozone consumption coefficient.

  20. Advances in the development of remote sensing technology for agricultural applications

    NASA Technical Reports Server (NTRS)

    Powers, J. E.; Erb, R. B.; Hall, F. G.; Macdonald, R. B.

    1979-01-01

    The application of remote sensing technology to crop forecasting is discussed. The importance of crop forecasts to the world economy and agricultural management is explained, and the development of aerial and spaceborne remote sensing for global crop forecasting by the United States is outlined. The structure, goals and technical aspects of the Large Area Crop Inventory Experiment (LACIE) are presented, and main findings on the accuracy, efficiency, applicability and areas for further study of the LACIE procedure are reviewed. The current status of NASA crop forecasting activities in the United States and worldwide is discussed, and the objectives and organization of the newly created Agriculture and Resources Inventory Surveys through Aerospace Remote Sensing (AgRISTARS) program are presented.

  1. Market assessment of photovoltaic power systems for agricultural applications in Morocco

    SciTech Connect

    Steingass, H.; Asmon, I.

    1981-09-01

    A month-long study in Morocco was aimed at assessing the market potential for stand-alone photovoltaic systems in agriculture and rural service applications. The types of applications considered are those requiring less than 15 kw of power. The applications include irrigation, cattle watering, refrigeration, crop processing, potable water and educational TV. Telecommunications and transportation signalling applications were also considered in the course of the study. Power and energy use profiles are described for many applications as well assessments of business environment, government and private sector attitudes towards photovoltaics, and financing. The Moroccan market presents both advantages and disadvantages for American PV manufacturers. The principle advantages are a limited grid, interest in and present use of PV in communications applications, attractive investment incentives and a stated policy favoring American investment. Major disadvantages include lack of government incentives for PV use, general unfamiliarity with PV technology, high first cost of PV, a well-established market network for diesel generators, and difficulty with financing. Given these parameters the market for PV in Morocco during the period of 1981 to 1986, will be relatively small, about 340 kwp. Sectors where the market for PV is likely to be more favorable than for agriculture include: telecommunications, transport signalling and some rural services. The primary market appears to be in the public (i.e., government) rather than private sector, due to financial constraints and the high price of PV relative to conventional power sector.

  2. Draft standards and guidelines for the land application of mechanical pulp mill sludge to agricultural land

    SciTech Connect

    1998-09-01

    Mechanical pulp mill sludge consists primarily of water, wood fiber, biomass, and residual chemicals. Research has shown that application of sludge to land improves the nutrient status and physical properties of soil, resulting in enhanced plant growth. This report presents guidelines for operations involving the application of mechanical pulp mill sludge on agricultural land in Alberta. It lists the regulatory requirements for sludge generators, restrictions on land application, and record-keeping and reporting requirements; provides general information on sludge properties and parameters of interest, suitability of receiving soils and areas, and sludge application rates and frequencies. Research studies conducted in Alberta on the benefits of land application of mechanical pulp mill sludge are also summarized.

  3. Developing a new wireless sensor network platform and its application in precision agriculture.

    PubMed

    Aquino-Santos, Raúl; González-Potes, Apolinar; Edwards-Block, Arthur; Virgen-Ortiz, Raúl Alejandro

    2011-01-01

    Wireless sensor networks are gaining greater attention from the research community and industrial professionals because these small pieces of "smart dust" offer great advantages due to their small size, low power consumption, easy integration and support for "green" applications. Green applications are considered a hot topic in intelligent environments, ubiquitous and pervasive computing. This work evaluates a new wireless sensor network platform and its application in precision agriculture, including its embedded operating system and its routing algorithm. To validate the technological platform and the embedded operating system, two different routing strategies were compared: hierarchical and flat. Both of these routing algorithms were tested in a small-scale network applied to a watermelon field. However, we strongly believe that this technological platform can be also applied to precision agriculture because it incorporates a modified version of LORA-CBF, a wireless location-based routing algorithm that uses cluster-based flooding. Cluster-based flooding addresses the scalability concerns of wireless sensor networks, while the modified LORA-CBF routing algorithm includes a metric to monitor residual battery energy. Furthermore, results show that the modified version of LORA-CBF functions well with both the flat and hierarchical algorithms, although it functions better with the flat algorithm in a small-scale agricultural network. PMID:22346622

  4. Developing a New Wireless Sensor Network Platform and Its Application in Precision Agriculture

    PubMed Central

    Aquino-Santos, Raúl; González-Potes, Apolinar; Edwards-Block, Arthur; Virgen-Ortiz, Raúl Alejandro

    2011-01-01

    Wireless sensor networks are gaining greater attention from the research community and industrial professionals because these small pieces of “smart dust” offer great advantages due to their small size, low power consumption, easy integration and support for “green” applications. Green applications are considered a hot topic in intelligent environments, ubiquitous and pervasive computing. This work evaluates a new wireless sensor network platform and its application in precision agriculture, including its embedded operating system and its routing algorithm. To validate the technological platform and the embedded operating system, two different routing strategies were compared: hierarchical and flat. Both of these routing algorithms were tested in a small-scale network applied to a watermelon field. However, we strongly believe that this technological platform can be also applied to precision agriculture because it incorporates a modified version of LORA-CBF, a wireless location-based routing algorithm that uses cluster-based flooding. Cluster-based flooding addresses the scalability concerns of wireless sensor networks, while the modified LORA-CBF routing algorithm includes a metric to monitor residual battery energy. Furthermore, results show that the modified version of LORA-CBF functions well with both the flat and hierarchical algorithms, although it functions better with the flat algorithm in a small-scale agricultural network. PMID:22346622

  5. Fabrication of Scalable Indoor Light Energy Harvester and Study for Agricultural IoT Applications

    NASA Astrophysics Data System (ADS)

    Watanabe, M.; Nakamura, A.; Kunii, A.; Kusano, K.; Futagawa, M.

    2015-12-01

    A scalable indoor light energy harvester was fabricated by microelectromechanical system (MEMS) and printing hybrid technology and evaluated for agricultural IoT applications under different environmental input power density conditions, such as outdoor farming under the sun, greenhouse farming under scattered lighting, and a plant factory under LEDs. We fabricated and evaluated a dye- sensitized-type solar cell (DSC) as a low cost and “scalable” optical harvester device. We developed a transparent conductive oxide (TCO)-less process with a honeycomb metal mesh substrate fabricated by MEMS technology. In terms of the electrical and optical properties, we achieved scalable harvester output power by cell area sizing. Second, we evaluated the dependence of the input power scalable characteristics on the input light intensity, spectrum distribution, and light inlet direction angle, because harvested environmental input power is unstable. The TiO2 fabrication relied on nanoimprint technology, which was designed for optical optimization and fabrication, and we confirmed that the harvesters are robust to a variety of environments. Finally, we studied optical energy harvesting applications for agricultural IoT systems. These scalable indoor light harvesters could be used in many applications and situations in smart agriculture.

  6. Market assessment of photovoltaic power systems for agricultural applications in Mexico

    SciTech Connect

    Steigelman, W.; Asmon, I.

    1981-07-01

    A month-long study in Mexico was aimed at assessing the market potential for stand-alone photovoltaic systems in agriculture. The types of applications considered are those requiring less than 15 kw of power. The applications include irrigation, cattle watering, refrigeration, crop processing and animal raising. Descriptions are provided of power and energy use profiles for many applications as well as assessments of business environment, government and private sector attitudes towards photovoltaics, and financing. The Mexican market presents both advantages and disadvantages for American PV manufacturers. The principal advantages are recognition of the technical superiority of American photovoltaics and the favorable reputation of several American PV firms already active in the Mexican market. Major disadvantages include lack of government incentives for PV use, cheap domestic energy sources, extensive electric grid, high first cost of PV, competition from Mexican and other non-US PV companies, and lack of financing. Given these parameters the market for PV in the Mexican agricultural sector during the period 1981 to 1986, will be relatively small, about 605 kwp. However, other sectors where the market for PV is likely to be more favorable than for agriculture include: rural services, telecommunications and cathodic protection. The primary market appears to be in the public (i.e., government) rather than private sector, due to financing constraints and the high price of PV relative to conventional power sources available to the private sector.

  7. Elementary student and prospective teachers' agri-food system literacy: Understandings of agricultural and science education's goals for learning

    NASA Astrophysics Data System (ADS)

    Trexler, Cary Jay

    1999-09-01

    Although rhetoric abounds in the agricultural education literature regarding the public's dearth of agri-food system literacy, problems arise when establishing educational interventions to help ameliorate illiteracy. Researchers do not fully know what individuals understand about the complex agri-food system. Hence, educational programs and curricula may focus on areas where students already possess well developed and scientifically accurate schemata, while ignoring other areas where incompatible or naive understandings persist. Democratic decisions about complex societal and environmental issues, such as trade-offs of our industrial agri-food system, require individuals to possess understandings of complex interrelationships. This exploratory qualitative study determines what two groups---elementary students and prospective elementary school teachers---understand about selected concepts foundational to agri-food system literacy. To ground the study in current national education curricular standards, a synthesis of both agricultural and science education benchmarks was developed. This helped structure interviews with the study's informants: nine elementary students and nine prospective elementary teachers. Analysis of discourse was based upon a conceptual change methodology. Findings showed that informant background and non-school experiences were linked to agri-food system literacy, while formal, in-school learning was not. For elementary students, high socio-economic status, gardening and not living in urban areas were correlates with literacy; the prospective teacher group exhibited similar trends. Informants understood that food came from farms where plants and animals were raised. For the majority, however, farms were described as large gardens. Additionally, informants lacked a clear understanding of the roles soil and fertilizers play in crop production. Further, few spoke of weeds as competitors with crops for growth requirements. Informants understood that

  8. Integrating different knowledge sources and disciplines for practical applications in Forest and Agricultural Engineering

    NASA Astrophysics Data System (ADS)

    Guzmán, Gema; Castillo, Carlos; Taguas, Encarnación

    2013-04-01

    One of the aims of 'The Bologna Process' is to promote among the students the acquisition of practical, social and creative skills to face real-life situations and to solve the difficulties they might find during their professional life. It involves an important change in the educational system, from a traditional approach focused on teaching, towards a new one that encourages learning. Under this context, University teaching implies the design of activities addressed to the dissemination of "know-how" to solve different problems associated with two technical disciplines: Forest and Agricultural Engineering. This study presents a preliminary experience where a group of information and communication technologies (ICT) such as, audiovisual resources (videos, reports and photo gallery), virtual visits to blogs and interactive activities have been used to provide a comprehensive knowledge of the environmental and sociocultural components of the landscape in order to facilitate the decision-making process in the engineering project context . With these tools, the students must study and characterize all these aspects in order to justify the chosen solutions and the project design. This approach was followed in the analysis of the limiting factors of practical cases in projects about forestation, landscape restoration and hydrological planning. This communication shows how this methodology has been applied in Forest and Agricultural Engineering and the students' experience with these innovative tools. The use of ICTs involved a friendly framework that stimulated students' interest and made subjects more attractive, since it allowed to assess the complex relationships between landscape, history and economy. Furthermore, this type of activities promotes the interdisciplinary training and the acquisition of creative and autonomous skills which are not included in many cases into the main objectives of the subjects.

  9. Application of nitrogen and phosphorus criteria for streams in agricultural landscapes.

    PubMed

    Chambers, P A; Benoy, G A; Brua, R B; Culp, J M

    2011-01-01

    Efforts to control eutrophication of water resources in agriculturally dominated ecosystems have focused on managing on-farm activities to reduce nutrient loss; however, another management measure for improving water quality is adoption of environmental performance criteria (or 'outcome-based standards'). Here, we review approaches for setting environmental quality criteria for nutrients, summarize approaches developed in Canada for setting 'ideal' and 'achievable' nutrient criteria for streams in agricultural watersheds, and consider how such criteria could be applied. As part of a 'National Agri-Environmental Standards Initiative', the Government of Canada committed to the development of non-regulatory environmental performance standards that establish total P (TP) and total N (TN) concentrations to protect ecological condition of agricultural streams. Application of four approaches for defining ideal standards using only chemistry data resulted in values for TP and TN spanning a relatively narrow range of concentrations within a given ecoregion. Cross-calibration of these chemically derived standards with information on biological condition resulted in recommendations for TP and TN that would likely protect aquatic life from adverse effects of eutrophication. Non-point source water quality modelling was then conducted in a specific watershed to estimate achievable standards, i.e. chemical conditions that could be attained using currently available and recommended management practices. Our research showed that, taken together, short-term achievable standards and ultimate ideal standards could be used to set policy targets that should, if realized, lower N and P concentrations in Canadian agricultural streams and improve biotic condition. PMID:22156121

  10. Pesticide Use and Cutaneous Melanoma in Pesticide Applicators in the Agricultural Heath Study

    PubMed Central

    Dennis, Leslie K.; Lynch, Charles F.; Sandler, Dale P.; Alavanja, Michael C.R.

    2010-01-01

    Background Melanoma rates continue to increase; however, few risk factors other than sun sensitivity and ultraviolet radiation (including sun exposure) have been identified. Although studies of farmers have shown an excess risk of melanoma and other skin cancers, it is unclear how much of this is related to sun exposure compared with other agricultural exposures. Methods We examined dose–response relationships for 50 agricultural pesticides and cutaneous melanoma incidence in the Agricultural Health Study cohort of licensed pesticide applicators, along with ever use of older pesticides that contain arsenic. Logistic regression was used to examine odds ratios (ORs) and 95% confidence intervals (CIs) associated with pesticide exposure adjusted for age, sex, and other potential confounders. Results We found significant associations between cutaneous melanoma and maneb/mancozeb (63 exposure days: OR = 2.4; 95% CI, 1.2–4.9; trend p = 0.006), parathion (≥ 56 exposure days: OR = 2.4; 95% CI, 1.3–4.4; trend p = 0.003), and carbaryl (≥ 56 exposure days: OR = 1.7; 95% CI, 1.1–2.5; trend p = 0.013). Other associations with benomyl and ever use of arsenical pesticides were also suggested. Conclusions Most previous melanoma literature has focused on host factors and sun exposure. Our research shows an association between several pesticides and melanoma, providing support for the hypotheses that agricultural chemicals may be another important source of melanoma risk. PMID:20164001

  11. A Model for Agricultural Education in Public Schools.

    ERIC Educational Resources Information Center

    Hughes, Matthew; Barrick, R. Kirby

    1993-01-01

    A model for public school agricultural education is based on changes in the agriculture industry, student population, society, education, and the workplace. Its three components are classroom/lab instruction, application (supervised agricultural experience and Future Farmers of America), and employment/additional education and career (including…

  12. Mapping Crop Status from AN Unmanned Aerial Vehicle for Precision Agriculture Applications

    NASA Astrophysics Data System (ADS)

    Guo, T.; Kujirai, T.; Watanabe, T.

    2012-07-01

    Remote sensing system mounted on unmanned aerial vehicle (UAV) could provide a complementary means to the conventional satellite and aerial remote sensing solutions especially for the applications of precision agriculture. UAV remote sensing offers a great flexibility to quickly acquire field data in sufficient spatial and spectral resolution at low cost. However a major problem of UAV is the high instability due to the low-end equipments and difficult environment situation, and this leads to image sensor being mostly operated under a highly uncertain configuration. Thus UAV images exhibit considerable derivation in spatial orientation, large geometric and spectral distortion, and low signal-to-noise ratio (SNR). To achieve the objectives of agricultural mapping from UAV, we apply a micro-helicopter UAV with a multiple spectral camera mounted and develop a framework to process UAV images. A very important processing is to generate mosaic image which can be aligned with maps for later GIS integration. With appropriate geometric calibration applied, we first decompose a homography of consecutive image pairs into a rotational component and a simple perspective component, and apply a linear interpolation to the angle of the rotational component, followed by a linear matrix interpolation operator to the perspective component, and this results in an equivalent transformation but ensures a smooth evolution between two images. Lastly to demonstrate the potential of UAV images to precision agriculture application, we perform spectral processing to derive vegetation indices (VIs) maps of crop, and also show the comparison with satellite imagery. Through this paper, we demonstrate that it is highly feasible to generate quantitative mapping products such as crop stress maps from UAV images, and suggest that UAV remote sensing is very valuable for the applications of precision agriculture.

  13. An Analysis of Factors That Affect the Educational Performance of Agricultural Students

    ERIC Educational Resources Information Center

    Greenway, Gina

    2012-01-01

    Many factors contribute to student achievement. This study focuses on three areas: how students learn, how student personality type affects performance, and how course format affects performance outcomes. The analysis sought to improve understanding of the direction and magnitude with which each of these factors impacts student success. Improved…

  14. Preparing Students for Critical-Thinking Applications on Standardized Tests

    ERIC Educational Resources Information Center

    Hendricks, Jacquelyn Kaye

    2010-01-01

    Student performance on critical-thinking applications on standardized tests in a southwestern U.S. state has been low for several years. The purpose of this instrumental case study was to explore how one school district prepared students for critical-thinking applications on standardized tests. The study was informed by cognitivism and…

  15. Agricultural and Food Processing Applications of Pulsed Power and Plasma Technologies

    NASA Astrophysics Data System (ADS)

    Takaki, Koichi

    Agricultural and food processing applications of pulsed power and plasma technologies are described in this paper. Repetitively operated compact pulsed power generators with a moderate peak power are developed for the agricultural and the food processing applications. These applications are mainly based on biological effects and can be categorized as germination control of plants such as Basidiomycota and arabidopsis inactivation of bacteria in soil and liquid medium of hydroponics; extraction of juice from fruits and vegetables; decontamination of air and liquid, etc. Types of pulsed power that have biological effects are caused with gas discharges, water discharges, and electromagnetic fields. The discharges yield free radicals, UV radiation, intense electric field, and shock waves. Biologically based applications of pulsed power and plasma are performed by selecting the type that gives the target objects the adequate result from among these agents or byproducts. For instance, intense electric fields form pores on the cell membrane, which is called electroporation, or influence the nuclei. This paper mainly describes the application of the pulsed power for the germination control of Basidiomycota i.e. mushroom, inactivation of fungi in the soil and the liquid medium in hydroponics, and extraction of polyphenol from skins of grape.

  16. Lesson Plans: The Census of Agriculture.

    ERIC Educational Resources Information Center

    Bureau of the Census (DOC), Suitland, MD.

    This publication contains four lesson plans to assist teachers in instructing their students about the census of agriculture and its uses. Designed primarily for vocational agricultural classes, the lesson plans may also have applications in math, social studies, and journalism or writing classes. Teachers do not need specialized knowledge about…

  17. Rural Elementary Students' Understanding of Science and Agricultural Education Benchmarks Related to Meat and Livestock.

    ERIC Educational Resources Information Center

    Meischen, Deanna L.; Trexler, Cary J.

    2003-01-01

    Seven fifth-graders developed concept maps depicting their knowledge of meat product development. Despite their rural background, they lacked understanding of agriculture concepts and had mixed knowledge of agricultural literacy benchmarks concerning food products. Their language did not reflect scientific terminology in the benchmarks. (Contains…

  18. 25 CFR 166.902 - How can I become an agriculture educational employment student?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... CFR part 308; and (2) Be accepted into or enrolled in a course of study at an accredited post... 25 Indians 1 2011-04-01 2011-04-01 false How can I become an agriculture educational employment... WATER GRAZING PERMITS Agriculture Education, Education Assistance, Recruitment, and Training §...

  19. 25 CFR 166.902 - How can I become an agriculture educational employment student?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... CFR part 308; and (2) Be accepted into or enrolled in a course of study at an accredited post... 25 Indians 1 2014-04-01 2014-04-01 false How can I become an agriculture educational employment... WATER GRAZING PERMITS Agriculture Education, Education Assistance, Recruitment, and Training §...

  20. 25 CFR 166.902 - How can I become an agriculture educational employment student?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... CFR part 308; and (2) Be accepted into or enrolled in a course of study at an accredited post... 25 Indians 1 2010-04-01 2010-04-01 false How can I become an agriculture educational employment... WATER GRAZING PERMITS Agriculture Education, Education Assistance, Recruitment, and Training §...

  1. 25 CFR 166.902 - How can I become an agriculture educational employment student?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... CFR part 308; and (2) Be accepted into or enrolled in a course of study at an accredited post... 25 Indians 1 2013-04-01 2013-04-01 false How can I become an agriculture educational employment... WATER GRAZING PERMITS Agriculture Education, Education Assistance, Recruitment, and Training §...

  2. 25 CFR 166.902 - How can I become an agriculture educational employment student?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... CFR part 308; and (2) Be accepted into or enrolled in a course of study at an accredited post... 25 Indians 1 2012-04-01 2011-04-01 true How can I become an agriculture educational employment... WATER GRAZING PERMITS Agriculture Education, Education Assistance, Recruitment, and Training §...

  3. Assembling and Using Occupational Data Concerning Former Students of Vocational Agriculture in Virginia.

    ERIC Educational Resources Information Center

    McMillion, Martin B.

    A State-wide followup, personal interview survey was made of 1,396 Virginia vocational agriculture graduates, from the classes of 1968 through 1972 and representing 34 percent of the total, to ascertain the percentage who made use of 144 content items usually taught in vocational agriculture, and whether used items were used on- or off-the-job.…

  4. As Land-Grant Law Turns 150, Students Crowd into Agriculture Colleges

    ERIC Educational Resources Information Center

    Biemiller, Lawrence

    2012-01-01

    On July 2, 1862, Abraham Lincoln signed Justin Morrill's second agriculture-school bill into law. Along with another measure he championed, in 1890, it created a system of land-grant colleges that rooted agriculture firmly in university research and helped democratize American higher education, creating institutions not for the sons and daughters…

  5. Enhancing the Undergraduate Experience: The Role of a Student Organization for Preservice Agricultural Science Teachers

    ERIC Educational Resources Information Center

    Roberts, T. Grady; Harlin, Julie F.; Murphrey, Theresa P.; Dooley, Kim E.

    2007-01-01

    The purpose of this study was to determine if a need exists to establish an organization specifically for preservice agricultural science teachers and if so, the attributes of such an organization. Selected peer preservice agricultural education programs were examined and focus groups were conducted with preservice and inservice teachers. Results…

  6. College Students' View of Biotechnology Products and Practices in Sustainable Agriculture Systems

    ERIC Educational Resources Information Center

    Anderson, William A.

    2008-01-01

    Sustainable agriculture implies the use of products and practices that sustain production, protect the environment, ensure economic viability, and maintain rural community viability. Disagreement exists as to whether or not the products and practices of modern biotechnological support agricultural sustainability. The purpose of this study was to…

  7. Review of anthraquinone applications for pest management and agricultural crop protection.

    PubMed

    DeLiberto, Shelagh T; Werner, Scott J

    2016-10-01

    We have reviewed published anthraquinone applications for international pest management and agricultural crop protection from 1943 to 2016. Anthraquinone (AQ) is commonly found in dyes, pigments and many plants and organisms. Avian repellent research with AQ began in the 1940s. In the context of pest management, AQ is currently used as a chemical repellent, perch deterrent, insecticide and feeding deterrent in many wild birds, and in some mammals, insects and fishes. Criteria for evaluation of effective chemical repellents include efficacy, potential for wildlife hazards, phytotoxicity and environmental persistence. As a biopesticide, AQ often meets these criteria of efficacy for the non-lethal management of agricultural depredation caused by wildlife. We summarize published applications of AQ for the protection of newly planted and maturing crops from pest birds. Conventional applications of AQ-based repellents include preplant seed treatments [e.g. corn (Zea mays L.), rice (Oryza sativa L.), sunflower (Helianthus annuus L.), wheat (Triticum spp.), millet (Panicum spp.), sorghum (Sorghum bicolor L.), pelletized feed and forest tree species] and foliar applications for rice, sunflower, lettuce (Lactuca sativa L.), turf, sugar beets (Beta vulgaris L.), soybean (Glycine max L.), sweet corn and nursery, fruit and nut crops. In addition to agricultural repellent applications, AQ has also been used to treat toxicants for the protection of non-target birds. Few studies have demonstrated AQ repellency in mammals, including wild boar (Sus scrofa, L.), thirteen-lined ground squirrels (Ictidomys tridecemlineatus, Mitchill), black-tailed prairie dogs (Cyomys ludovicainus, Ord.), common voles (Microtus arvalis, Pallas), house mice (Mus musculus, L.), Tristram's jirds (Meriones tristrami, Thomas) and black rats (Rattus rattus L.). Natural sources of AQ and its derivatives have also been identified as insecticides and insect repellents. As a natural or synthetic biopesticide, AQ

  8. Standards and guidelines for the land application of mechanical pulp mill sludge to agricultural land

    SciTech Connect

    1999-11-01

    These standards and guidelines are intended for operations involving the application of pulp mill sludge on agricultural land in Alberta, with the rationale that the applied material is a good soil amendment. The objectives of the standards and guidelines are to ensure that the land application is conducted in a manner that protects human health and the environment, and to guide sludge generators and users by outlining the basis for application reviews and approval requirements pursuant to the Environmental Protection and Enhancement Act. The standards and guidelines cover such matters as definitions, sludge assessments, record keeping and reporting, soil suitability, and land application methods and procedures. The document also includes a summary of research studies and related reports on the benefits of sludge utilization on land.

  9. Application of Sludges and Wastewaters on Agricultural Land: A Planning and Educational Guide, MCD-35. Research Bulletin 1090.

    ERIC Educational Resources Information Center

    Knezek, Bernard D., Ed.; Miller, Robert H., Ed.

    This report addresses the application of agricultural processing wastes, industrial and municipal wastes on agricultural land as both a waste management and resource recovery and reuse practice. The document emphasizes the treatment and beneficial utilization of sludge and wastewater as opposed to waste disposal. These objectives are achieved…

  10. DYNAMIC TESTING OF GPS RECEIVERS ON AGRICULTURAL AIRCRAFT FOR REMOTE SENSING AND VARIABLE-RATE AERIAL APPLICATION

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Global Positioning System (GPS) receivers and GPS-based swath guidance systems are used on agricultural aircraft for remote sensing, airplane guidance, and to support variable-rate aerial application of crop inputs such as insecticides, cotton growth regulators, and defoliants. Agricultural aircraf...

  11. Not all GMOs are crop plants: non-plant GMO applications in agriculture.

    PubMed

    Hokanson, K E; Dawson, W O; Handler, A M; Schetelig, M F; St Leger, R J

    2014-12-01

    Since tools of modern biotechnology have become available, the most commonly applied and often discussed genetically modified organisms are genetically modified crop plants, although genetic engineering is also being used successfully in organisms other than plants, including bacteria, fungi, insects, and viruses. Many of these organisms, as with crop plants, are being engineered for applications in agriculture, to control plant insect pests or diseases. This paper reviews the genetically modified non-plant organisms that have been the subject of permit approvals for environmental release by the United States Department of Agriculture/Animal and Plant Health Inspection Service since the US began regulating genetically modified organisms. This is an indication of the breadth and progress of research in the area of non-plant genetically modified organisms. This review includes three examples of promising research on non-plant genetically modified organisms for application in agriculture: (1) insects for insect pest control using improved vector systems; (2) fungal pathogens of insects to control insect pests; and (3) virus for use as transient-expression vectors for disease control in plants. PMID:24242193

  12. Residential Proximity to Agricultural Pesticide Applications and Childhood Acute Lymphoblastic Leukemia

    PubMed Central

    Rull, Rudolph P.; Gunier, Robert; Von Behren, Julie; Hertz, Andrew; Crouse, Vonda; Buffler, Patricia A.; Reynolds, Peggy

    2009-01-01

    Ambient exposure from residential proximity to applications of agricultural pesticides may contribute to the risk of childhood acute lymphoblastic leukemia (ALL). Using residential histories collected from the families of 213 ALL cases and 268 matched controls enrolled in the Northern California Childhood Leukemia Study, the authors assessed residential proximity within a half-mile (804.5 meters) of pesticide applications by linking address histories with reports of agricultural pesticide use. Proximity was ascertained during different time windows of exposure, including the first year of life and the child’s lifetime through the date of diagnosis for cases or reference for controls. Agricultural pesticides were categorized a priori into groups based on similarities in toxicological effects, physicochemical properties, and target pests or uses. The effects of moderate and high exposure for each group of pesticides were estimated using conditional logistic regression. Elevated ALL risk was associated with lifetime moderate exposure, but not high exposure, to certain physicochemical categories of pesticides, including organophosphates, cholorinated phenols, and triazines, and with pesticides classified as insecticides or fumigants. A similar pattern was also observed for several toxicological groups of pesticides. These findings suggest future directions for the identification of specific pesticides that may play a role in the etiology of childhood leukemia. PMID:19700145

  13. Application of modern biotechnology to food and agriculture: food systems perspective.

    PubMed

    McCullum, Christine; Benbrook, Charles; Knowles, Lori; Roberts, Susan; Schryver, Tamara

    2003-01-01

    The purpose of this article is to provide nutrition educators with an introduction to a range of considerations and forces that are driving the application of modern biotechnology in the food and fiber sector based on a food systems perspective. In doing so, the following issues are critically assessed: (1) the global debate on how to regulate genetically engineered (GE) foods and crops, (2) cultural differences in public perceptions of GE foods, and (3) evaluation of selected GE traits against the principles of social, economic, and ecological sustainability, including the potential of modern agricultural biotechnology to enhance global food security. Where appropriate, we also review other agricultural technologies and the broader political, social, and economic contexts in which these technologies have been introduced. Finally, we offer recommendations for how multiple stakeholder groups, including policy makers, biotechnology advocates, and nutrition educators, can move toward a more informed dialogue and debate on this issue. PMID:14642218

  14. Crop residue stabilization and application to agricultural and degraded soils: A review.

    PubMed

    Medina, Jorge; Monreal, Carlos; Barea, José Miguel; Arriagada, César; Borie, Fernando; Cornejo, Pablo

    2015-08-01

    Agricultural activities produce vast amounts of organic residues including straw, unmarketable or culled fruit and vegetables, post-harvest or post-processing wastes, clippings and residuals from forestry or pruning operations, and animal manure. Improper disposal of these materials may produce undesirable environmental (e.g. odors or insect refuges) and health impacts. On the other hand, agricultural residues are of interest to various industries and sectors of the economy due to their energy content (i.e., for combustion), their potential use as feedstock to produce biofuels and/or fine chemicals, or as a soil amendments for polluted or degraded soils when composted. Our objective is review new biotechnologies that could be used to manage these residues for land application and remediation of contaminated and eroded soils. Bibliographic information is complemented through a comprehensive review of the physico-chemical fundamental mechanisms involved in the transformation and stabilization of organic matter by biotic and abiotic soil components. PMID:25936555

  15. Effects of a Recruitment Workshop on Selected Urban High School Students' Self-Efficacy and Attitudes toward Agriculture as a Subject, College Major, and Career

    ERIC Educational Resources Information Center

    Fraze, Lacee Brianne; Wingenbach, Gary; Rutherford, Tracy; Wolfskill, Lawrence A.

    2011-01-01

    The purpose of this study was to determine if selected high school students' participation in a summer agricultural communications workshop affected their self-efficacy and attitudes toward agriculture as a subject, college major, and/or as a career. Data were gathered from an accessible population (N = 145), from which a purposive sample (n = 94)…

  16. The Effects of a Serious Digital Game on the Animal Science Competency, Mathematical Competency, Knowledge Transfer Ability, and Motivation of Secondary Agricultural Education Students

    ERIC Educational Resources Information Center

    Bunch, James Charles

    2012-01-01

    The purpose of this study was twofold: 1) to compare the effectiveness of two teaching methods (i.e., lecture/discussion and digital game-based learning) on student achievement in agriculture and mathematics regarding a unit on swine diseases in animal science courses offered through secondary agricultural education programs in Oklahoma; 2) to…

  17. Factors Limiting Vocational Agriculture Student Participation in Supervised Occupational Experience Programs in Nebraska.

    ERIC Educational Resources Information Center

    Foster, Richard M.

    1986-01-01

    In this study, economic factors were consistently rated as important considerations in limited student participation in supervised farm practice in Nebraska high schools. It was indicated that administrative support was the least limiting factor for student participation. (CT)

  18. Research advances of antimicrobial peptides and applications in food industry and agriculture.

    PubMed

    Meng, Shuo; Xu, Huanli; Wang, Fengshan

    2010-06-01

    Antimicrobial peptides (AMPs) are produced by a wide range of organisms and serve as their natural defenses against infection caused by bacteria, viruses and fungi. Because of the positively charge and amphipathic structure, AMPs kill target cells through diverse and complex mechanisms once in a target membrane and these special mechanisms are considered to be the critical factors for the less tendency of drug resistance development. Thus AMPs may become a new generation of promising antimicrobial agents in future anti-infection application. Additionally, AMPs can also be used in food industry and agriculture. On the basis of discussing the structural features, action mechanisms and sources, the applications of AMPs were reviewed in this paper, including in food industry, feedstuff, cultivation of disease-resistant transgenic plant, cultivation of transgenic animal, and aquaculture, especially the patented applications. PMID:20408795

  19. The application of GMOs in agriculture and in food production for a better nutrition: two different scientific points of view.

    PubMed

    Buiatti, M; Christou, P; Pastore, G

    2013-05-01

    This commentary is a face-to-face debate between two almost opposite positions regarding the application of genetic engineering in agriculture and food production. Seven questions on the potential benefits of the application of genetic engineering in agriculture and on the potentially adverse impacts on the environment and human health were posed to two scientists: one who is sceptical about the use of GMOs in Agriculture, and one who views GMOs as an important tool for quantitatively and qualitatively improving food production. PMID:23076994

  20. Applications of remote sensing to precision agriculture with dual economic and environmental benefits

    NASA Astrophysics Data System (ADS)

    Seielstad, George; Laguette, Soizik; Seelan, Santhosh K.; Lawrence, Rick; Nielsen, Gerald A.; Clay, David; Dalsted, Kevin

    2002-01-01

    In the U.S. Northern Great Plains, growing seasons are short but extremely productive. Farms and ranches are large, so many of precision agriculture's early adopters reside in the region. Crop yield maps at season's end reveal sizable variations across fields. Farm management relying upon uniform chemical applications is ineffective and wasteful. We provided information about crop and range status in near- real-time, so that in-season decisions could be made to optimize final yields and minimize environmental degradation. We created learning communities, in which information is shared among scientists, farmers, ranchers, and data providers. The new information for agricultural producers was satellite and aerial imagery. Value-added information was derived from ETM+, AVHRR, IKONOS, and MIDOS sensors. The emphasis was on reducing the time between acquisition of data by a satellite and delivery of value-added products to farmers and ranchers. To distribute large spatial data sets in short times to rural users we relied upon satellite transmission (Direct PC). Results include: (1) management zone delineation, (2) variable-rate fertilizer applications, (3) weed detection, (4) irrigation efficiency determination, (5) detection of insect infestation, (6) specification of crop damage due to inadvertent chemical application, and (7) determination of livestock carrying capabilities on rangelands.

  1. Application of municipal sludge (biosolids) for agricultural purposes and groundwater nitrate concentrations

    SciTech Connect

    Welby, C.W. . Dept. of Marine, Earth and Atmospheric Sciences)

    1993-03-01

    One of the more popular means of handling sewage sludge from municipalities is its application to agricultural lands. A variety of crops are grown with the expectation that plants will utilize the nitrogen. However, a complex scenario allows some of the nitrate to move below root depth and eventually to the water table at depths of up to 30 ft. The City of Raleigh, NC injects sewage sludge ( residuals'', biosolids'') into soils derived largely from the Rolesville Granite in an area of typical rolling Piedmont topography. A 1975 background study of part of the site demonstrated differences in groundwater quality between areas farmed over a period of years and areas dominated by second-growth pine and harwood forests. Groundwater quality data collected semiannually between 1982 and 1988 show gradual buildup of nitrate in some fields; in others groundwater quality apparently remains unaffected by nitrate from the sludge. Monitoring well placement may play a role in these differences. Minimum time from the sludge application to an increase in groundwater nitrate is from 9 to 12 months. An ongoing study of a 12-acre field which lay fallow for a number of years prior to sludge application in 1990 demonstrates that some nitrate does move downward fairly rapidly, its movement being recorded in both the saprolite and groundwater. Comparison of nitrate content of groundwater from monitoring wells at a nearby dairy farm shows that normal agricultural practices may also increase the nitrate content of the shallow groundwater.

  2. Empirical analysis of dry spells for agricultural applications in west Africa

    SciTech Connect

    Sivakumar, M.V.K. )

    1992-05-01

    Recurring droughts and decreased agricultural productivity during the last two decades in West Africa point to the need for a clearer understanding of the length of dry spells, their frequencies, and their probabilities. The simplest calculations of dry spells for general applications involve computation of the probabilities of maximum and conditional dry spells exceeding a user-specified threshold value from a given calendar date. For more precise applications in agriculture, it is important to consider the different periods after sowing a crop, since sowing dates in the semiarid West African regions vary from year to year. Using the specific definition of onset of rains in each year as the sowing date, the length of dry spells was calculated from the historical rainfall data. Probability distribution of time to the next wet day and the percentage frequencies of dry spells were computed for successive days after sowing (DAS) a crop. Dry-spell analysis showed a pronounced drop in the drought risk for cereal crops from the panicle initiation phase (20 DAS) to the flowering phase (60 DAS). The relationships between mean annual rainfall and average frequency of dry spells for the selected locations in West Africa showed distinct patterns and permit the prediction of the frequency of dry spells from annual rainfall totals. Applications of the dry-spell analysis for the choice of a crop/variety, supplemental irrigation, and crop water requirements have been described with examples.

  3. [An improved method and its application for agricultural drought monitoring based on remote sensing].

    PubMed

    Zheng, You-Fei; Cheng, Jin-Xin; Wu, Rong-Jun; Guan, Fu-Lai; Yao, Shu-Ran

    2013-09-01

    From the viewpoint of land surface evapotranspiration, and by using the semi-empirical evapotranspiration model based on the Priestley-Taylor equation and the land surface temperature-vegetation index (LST-VI) triangle algorithm, the current monitoring technology of agricultural drought based on remote sensing was improved, and a simplified Evapotranspiration Stress Index (SESI) was derived. With the application of the MODIS land products from March to November in 2008 and 2009, the triangle algorithm modeling with three different schemes was constructed to calculate the SESI to monitor the agricultural drought in the plain areas of Beijing, Tianjin, and Hebei, in comparison with the Temperature Vegetation Dryness Index (TVDI). The results showed that SESI could effectively simplify the remote sensing drought monitoring method, and there was a good agreement between SESI and surface soil (10 and 20 cm depth) moisture content. Moreover, the performance of SESI was better in spring and autumn than in summer, and the SESI during different periods was more comparable than TVDI. It was feasible to apply the SESI to the continuous monitoring of a large area of agricultural drought. PMID:24417121

  4. Application of principles of integrated agricultural systems: results from farmer panels

    Technology Transfer Automated Retrieval System (TEKTRAN)

    An Integrated Agricultural Systems working group comprised of USDA-ARS scientists is examining different agricultural systems from various geographic regions of the United States to determine fundamental principles that underlie successful integrated agricultural systems. Our hypothesis is that prin...

  5. Modules in Agricultural Education for Agricultural Supplies and Services.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Bureau of Occupational and Career Curriculum Development.

    Each of the 22 curriculum modules in this packet for instruction in agricultural supplies and services contains a brief description of the module content, a list of the major division or units, the overall objectives, objectives by units, content outline, and suggested teaching methods, student application activities, and evaluation procedures. A…

  6. Climatological to Near Real Time Global Meteorological Data for Agricultural, Range, and Forestry Applications

    NASA Astrophysics Data System (ADS)

    Hoell, J. M.; Stackhouse, P. W.; Westberg, D. J.; Chandler, W. S.; Whitlock, C. H.; Zhang, T.

    2007-12-01

    Application of Decision Support Systems (DSS) software often requires accurate environmental data on time scales ranging from daily forecasts to long-range climate outlooks. The NASA Science Mission Directorate's Applied Science Energy Management Program provides estimates of many of the required meteorological and solar parameters from a combination of assimilation models and satellite observations. However these data holdings are often in large archives and/or in formats unfamiliar to many potential users. NASA, through its Applications Program, has recognized that many potential data users are either unwilling or lack the resources required to investigate the applicability of these data to their particular application. NASA's Prediction of Worldwide Energy Resource (POWER) is one of NASA's Applications Project that has as one of its objectives the development of user-friendly data products for agricultural applications and to make these products readily accessible to the user community. The POWER project has adapted and reformatted data parameters from NASA Science Directorate sponsored research programs such as the International Satellite Cloud Climatology Project (ISCCP), the Surface Radiation Budget Project (SRB), the Global Precipitation Climatology Project (GPCP), the Tropical Rain Measuring Mission (TRMM) and the meteorological assimilation projects from the Global Modeling and Assimilation Office (GMAO). The POWER project currently provides a database of meteorological parameters and surface solar energy fluxes on a global 1-degree latitude/longitude grid. The agricultural data products currently available through a prototype web based information interface (http://power.larc.nasa.gov), consist of daily integrated surface solar radiation, daily averaged dew point temperature, daily maximum and minimum temperatures, and daily precipitation. The solar data has been inferred from satellite observations that cover the time period from July 1, 1983 through

  7. Students as Designers of Semantic Web Applications

    ERIC Educational Resources Information Center

    Tracy, Fran; Jordan, Katy

    2012-01-01

    This paper draws upon the experience of an interdisciplinary research group in engaging undergraduate university students in the design and development of semantic web technologies. A flexible approach to participatory design challenged conventional distinctions between "designer" and "user" and allowed students to play a role in developing…

  8. Design and testing of an agricultural implement for underground application of rodenticide bait.

    PubMed

    Malón, Hugo; Aguirre, A Javier; Boné, Antonio; Vidal, Mariano; García-Ramos, F Javier

    2015-01-01

    An agricultural implement for underground application of rodenticide bait to control the Mediterranean pocket gopher (Microtus Duodecimcostatus) in fruit orchards has been designed and tested. The main objective of this research was to design and test the implement by using the finite element method (FEM) and considering a range of loads generated on most commonly used furrow openers in agricultural implements. As a second step, the prototype was tested in the field by analysing the effects of forward speed and application depth on the mechanical behaviour of the implement structure. The FEM was used in the design phase and a prototype was manufactured. The structural strains on the prototype chassis under working conditions were tested by using strain gauges to validate the design phase. Three forward speeds (4.5, 5.5, and 7.0 km/h), three application depths (0.12, 0.15, and 0.17 m), and two types of soil (clayey-silty-loam and clayey-silty-sandy) were considered. The prototype was validated successfully by analysing the information obtained from the strain gauges. The Von Mises stresses indicated a safety coefficient of 1.9 for the most critical load case. Although both forward speed and application depth had a significant effect on the stresses generated on the chassis, the latter parameter critically affected the structural behaviour of the implement. The effects of the application depth on the strains were linear such that strains increased with depth. In contrast, strains remained roughly constant regardless of variation in the forward speed. PMID:25602272

  9. Design and Testing of an Agricultural Implement for Underground Application of Rodenticide Bait

    PubMed Central

    Malón, Hugo; Aguirre, A. Javier; Boné, Antonio; Vidal, Mariano; García-Ramos, F. Javier

    2015-01-01

    An agricultural implement for underground application of rodenticide bait to control the Mediterranean pocket gopher (Microtus Duodecimcostatus) in fruit orchards has been designed and tested. The main objective of this research was to design and test the implement by using the finite element method (FEM) and considering a range of loads generated on most commonly used furrow openers in agricultural implements. As a second step, the prototype was tested in the field by analysing the effects of forward speed and application depth on the mechanical behaviour of the implement structure. The FEM was used in the design phase and a prototype was manufactured. The structural strains on the prototype chassis under working conditions were tested by using strain gauges to validate the design phase. Three forward speeds (4.5, 5.5, and 7.0 km/h), three application depths (0.12, 0.15, and 0.17 m), and two types of soil (clayey-silty-loam and clayey-silty-sandy) were considered. The prototype was validated successfully by analysing the information obtained from the strain gauges. The Von Mises stresses indicated a safety coefficient of 1.9 for the most critical load case. Although both forward speed and application depth had a significant effect on the stresses generated on the chassis, the latter parameter critically affected the structural behaviour of the implement. The effects of the application depth on the strains were linear such that strains increased with depth. In contrast, strains remained roughly constant regardless of variation in the forward speed. PMID:25602272

  10. Biochar application to sandy and loamy soils for agricultural nutrient management

    NASA Astrophysics Data System (ADS)

    Gronwald, Marco; Don, Axel; Tiemeyer, Baerbel; Helfrich, Mirjam

    2014-05-01

    Soil fertility of agricultural soils is challenged by nutrients losses and increasing soil acidification. Furthermore, leached nutrients negatively affect the quality of ground and surface water 1]. In addition to the possible soil carbon sequestration by applying biochars, many positive soil-improving properties are attributed to biochars. The application of biochars to agricultural - especially sandy - soils could reduce leaching of nutrients and may improve their availability 1,2]. Thus, biochar application to agricultural fields could be an ecologically and economically viable option to improve soils' fertility. However, biochar properties strongly depend on their feedstock and production process 3]. Various types of biochars (pyrolysis char, hydrochar (produced at 200 and 250° C); feedstocks: digestate, Miscanthus and wood chips) were used to determine sorption kinetics and sorption isotherms for the major nutrients Ca, Mg, K, NH4 and NO3 as a function of biochar types in different soil substrates (sand, loess). In addition, the biochars were washed to create free binding sites on the chars' surface that simulate aged char. We compared the simulated aged char with biochars that was aged in-situ at a field experiment for seven months. The first results showed that pyrochars have the largest retention potential for NO3 and hydrochars have retention potential for NH4. Washing of biochars turned them from a PO4 and NH4 source into an adsorber, especially for hydrochars. Highest leaching was observed for biochars from digestates likely due to the high nutrient content of digestates. But the different ions may lead to pH-dependent interactions between each other and the chars' surface that override the adsoption effects. In this context, cation-bridge and ligand bindings 4,5] need to be further investigated. Most of the fresh, unwashed biochars were a source of nutrients with hardly any detectable nutrient retention. Pyrochars showed the highest potential for anion

  11. Fly ash application in nutrient poor agriculture soils: impact on methanotrophs population dynamics and paddy yields.

    PubMed

    Singh, Jay Shankar; Pandey, Vimal Chandra

    2013-03-01

    There are reports that the application of fly ash, compost and press mud or a combination thereof, improves plant growth, soil microbial communities etc. Also, fly ash in combination with farmyard manure or other organic amendments improves soil physico-chemical characteristics, rice yield and microbial processes in paddy fields. However, the knowledge about the impact of fly ash inputs alone or in combination with other organic amendments on soil methanotrophs number in paddy soils is almost lacking. We hypothesized that fly ash application at lower doses in paddy agriculture soil could be a potential amendment to elevate the paddy yields and methanotrophs number. Here we demonstrate the impact of fly ash and press mud inputs on number of methanotrophs, antioxidants, antioxidative enzymatic activities and paddy yields at agriculture farm. The impact of amendments was significant for methanotrophs number, heavy metal concentration, antioxidant contents, antioxidant enzymatic activities and paddy yields. A negative correlation was existed between higher doses of fly ash-treatments and methanotrophs number (R(2)=0.833). The content of antioxidants and enzymatic activities in leaves of higher doses fly ash-treated rice plants increased in response to stresses due to heavy metal toxicity, which was negatively correlated with rice grain yield (R(2)=0.944) and paddy straw yield (R(2)=0.934). A positive correlation was noted between heavy metals concentrations and different antioxidant and enzymatic activities across different fly ash treated plots.The data of this study indicate that heavy metal toxicity of fly ash may cause oxidative stress in the paddy crop and the antioxidants and related enzymes could play a defensive role against phytotoxic damages. We concluded that fly ash at lower doses with press mud seems to offer the potential amendments to improving soil methanotrophs population and paddy crop yields for the nutrient poor agriculture soils. PMID:23260239

  12. Market assessment of photovoltaic power systems for agricultural applications in Nigeria

    SciTech Connect

    Staples, D.; Steingass, H.; Nolfi, J.

    1981-10-01

    The results of a month-long study in Nigeria conducted in February 1981 are detailed. The study was aimed at assessing in the 1981 to 1986 market potential for stand-alone photovoltaic systems in agriculture. Information on technically and economically feasible applications, and assessments of business, government and financial climate for photovoltaic sales are provided. The study concluded that the market for stand-alone photovoltaic power systems will be large, the primary reasons being the availability of capital and the high premium placed on high reliability, low maintenance power systems. A market exists for such agricultural/rural applications as: micro-irrigation, veterinary units, grain grinding, dryers, produce coolers, ice makers, water/boreholes, and health, education and extension services. Other markets with high PV sales potential include: remote local government centers, public and private communication systems, TV battery chargers, domestic power supply and cathodic protection. The potential market for photovoltaics in the 1981 to 1986 time frame is estimated at about 1.9 to 4.7 MW. The major purchaser in the near-term would be the federal and state governments.

  13. Changes in Children's Consumption of Tomatoes through a School Lunch Programme Developed by Agricultural High-School Students

    ERIC Educational Resources Information Center

    Ishikawa, Midori; Kubota, Nozomi; Kudo, Keita; Meadows, Martin; Umezawa, Atsuko; Ota, Toru

    2013-01-01

    Objective: The purpose of the study was to discover whether tomato consumption in elementary- and middle-school students could be increased through a school lunch programme developed by agricultural high-school students acting as peer educators. Design: The high-school lunch programme included the process of growing tomatoes and providing a…

  14. The Influence of Self-Esteem and Selected Demographic Characteristics on First Semester Academic Achievement of Students Enrolled in a College of Agriculture

    ERIC Educational Resources Information Center

    Gaspard, Mae B.; Burnett, Michael F.; Gaspard, Camile P.

    2011-01-01

    The primary purpose of this study was to determine the influence of self-esteem and selected demographic characteristics on academic achievement among students at the freshman level in the College of Agriculture at Louisiana State University. The sample of the study was all students at Louisiana State University enrolled in the Introduction to…

  15. Evaluation of the Incubators in the Classroom Program: Does It Increase Fourth Grade Students' Knowledge of Agriculture-Related Science Concepts?

    ERIC Educational Resources Information Center

    Meunier, Ryan A.; Talbert, B. Allen; Latour, Mickey A.

    2002-01-01

    In seven Indiana schools, fourth graders received hands-on instruction with incubators; seven schools were controls, with a total of 736 students and 39 teachers participating. The treatment group increased agriculture-related science knowledge. Students from communities smaller than 5,000 scored better than those in larger communities. (Contains…

  16. Impacts of American Agricultural Education Student Teachers on Eleven Community Members in a New South Wales, Australia Community: A Qualitative Study

    ERIC Educational Resources Information Center

    Bunch, Tera; Stephens, Carrie; Hart, William

    2011-01-01

    The purpose of this study was to evaluate the influences of American agricultural education student teachers on a rural community in New South Wales, Australia. The study analyzed interviews with eleven participants of the American student teacher program in a rural New South Wales community. Results of the study were formulated by two…

  17. Does a Math-Enhanced Curriculum and Instructional Approach Diminish Students' Attainment of Technical Skills? A Year-Long Experimental Study in Agricultural Power and Technology

    ERIC Educational Resources Information Center

    Young, R. Brent; Edwards, M. Craig; Leising, James G.

    2009-01-01

    The purpose of this study was to empirically test the posit that students who participated in a contextualized, mathematics-enhanced high school agricultural power and technology (APT) curriculum and aligned instructional approach would not differ significantly (p less than 0.05) in their technical competence from students who participated in the…

  18. [The application of student-centered teaching to nursing education].

    PubMed

    Chien, Li-Yu; Huang, Hsiang-Ping

    2006-12-01

    Nursing education in Taiwan is currently facing an extensive reform toward student-centeredness. However, few articles were found in the Taiwanese nursing literature focusing on student-centered teaching and nurse educators in Taiwan may have different interpretations of it. Misinterpretation of the term 'student-centeredness' may lead educational reform into inconsistency or ineffectiveness. This study aims to expand student-centered teaching's application to nursing education, stressing that not only the teaching techniques but also a consistent thinking approach is essential for educational reform. The content of this article addresses the meaning of student-centeredness and the differences between teacher-centeredness and student-centeredness. The article also advocates Weimers' five key changes toward student-centered teaching: the balance of power, the function of content, the role of the teacher, the responsibility for learning, and the purpose and process of evaluation, and further expounds their application to nursing education. Hopefully this article can provide Taiwanese nursing educators and students with an explicit view of student-centeredness and facilitate a more effective application of it to educational reform in nursing. PMID:17160871

  19. Chemistry for Student Nurses: Applications-Based Learning

    ERIC Educational Resources Information Center

    El-Farargy, Nancy

    2009-01-01

    New chemistry materials were devised for pre university National Certificate (NC) nursing students studying chemistry at a further education college. Previously, preliminary work showed that students felt that the chemistry taught to them was irrelevant, boring and difficult. It was hoped that through an applications-led style curriculum…

  20. Potential Applications of Behavioral Fluency for Students With Autism

    ERIC Educational Resources Information Center

    Kubina, Jr., Richard M.; Wolfe, Pamela

    2005-01-01

    Curricula for students with autism do not take into account levels of learning such as behavioral fluency. Behavioral fluency addresses accuracy as well as speed of response. We posit that fluency increases the functionality of skills for students with autism and should be systematically programmed into a curriculum. To discuss the application of…

  1. High School Students' Knowledge and Attitudes regarding Biotechnology Applications

    ERIC Educational Resources Information Center

    Ozel, Murat; Erdogan, Mehmet; Usak, Muhammet; Prokop, Pavol

    2009-01-01

    The purpose of this study was to investigate high school students' knowledge and attitudes regarding biotechnology and its various applications. In addition, whether students' knowledge and attitudes differed according to age and gender were also explored. The Biotechnology Knowledge Questionnaire (BKQ) with 16 items and the Biotechnology Attitude…

  2. Civil Technology Applications. Teacher Edition [and] Student Edition.

    ERIC Educational Resources Information Center

    Schertz, Karen

    Teacher and student editions of Civil Technology Applications are one in a series of competency-based instructional materials for drafting and civil technology programs. It includes the technical content and tasks necessary for a student to be employed as a drafter or civil technician in a civil engineering firm. Introductory pages in the teacher…

  3. A Framework for Identifying Selective Chemical Applications for IPM in Dryland Agriculture.

    PubMed

    Umina, Paul A; Jenkins, Sommer; McColl, Stuart; Arthur, Aston; Hoffmann, Ary A

    2015-01-01

    Shifts to Integrated Pest Management (IPM) in agriculture are assisted by the identification of chemical applications that provide effective control of pests relative to broad-spectrum pesticides but have fewer negative effects on natural enemy (beneficial) groups that assist in pest control. Here, we outline a framework for identifying such applications and apply this framework to field trials involving the crop establishment phase of Australian dryland cropping systems. Several chemicals, which are not presently available to farmers in Australia, were identified as providing moderate levels of pest control and seedling protection, with the potential to be less harmful to beneficial groups including predatory mites, predatory beetles and ants. This framework highlights the challenges involved in chemically controlling pests while maintaining non-target populations when pest species are present at damaging levels. PMID:26694469

  4. A Framework for Identifying Selective Chemical Applications for IPM in Dryland Agriculture

    PubMed Central

    Umina, Paul A.; Jenkins, Sommer; McColl, Stuart; Arthur, Aston; Hoffmann, Ary A.

    2015-01-01

    Shifts to Integrated Pest Management (IPM) in agriculture are assisted by the identification of chemical applications that provide effective control of pests relative to broad-spectrum pesticides but have fewer negative effects on natural enemy (beneficial) groups that assist in pest control. Here, we outline a framework for identifying such applications and apply this framework to field trials involving the crop establishment phase of Australian dryland cropping systems. Several chemicals, which are not presently available to farmers in Australia, were identified as providing moderate levels of pest control and seedling protection, with the potential to be less harmful to beneficial groups including predatory mites, predatory beetles and ants. This framework highlights the challenges involved in chemically controlling pests while maintaining non-target populations when pest species are present at damaging levels. PMID:26694469

  5. Starting a Learning Progression for Agricultural Literacy: A Qualitative Study of Urban Elementary Student Understandings of Agricultural and Science Education Benchmarks

    ERIC Educational Resources Information Center

    Hess, Alexander Jay

    2010-01-01

    Science and agriculture professional organizations have argued for agricultural literacy as a goal for K-12 public education. Due to the complexity of our modern agri-food system, with social, economic, and environmental concerns embedded, an agriculturally literate society is needed for informed decision making, democratic participation, and…

  6. Beef Production for Agricultural Science I Core Curriculum. Student Reference. AGDEX 420/10.

    ERIC Educational Resources Information Center

    Missouri Univ., Columbia. Instructional Materials Lab.

    This student reference booklet is designed to accompany lessons outlined in the companion instructor's guide on beef production. Together, the student reference and instructor's guide form part of the Animal Science I core curriculum. This unit on beef production is divided into five lessons in these areas: selection of breeding stock, breeding…

  7. Individualized Study Guide on Apiculture: Student Guide. Curriculum Materials for Agricultural Education.

    ERIC Educational Resources Information Center

    Housmam, John L.; And Others

    The study guide contains introductory level information, principles and management practices which may be applied by a hobbyist or a commercial apiary. The lessons are designed to train students for entry level jobs, to establish students in a beekeeping enterprise, and to emphasize the importance of honey bees in our daily lives and in…

  8. The Role of the Agricultural Educator in Meeting the Needs of a Diverse Student Population.

    ERIC Educational Resources Information Center

    Conroy, Carol A.; Bruening, Thomas H.

    A study examined factors associated with achievement for African-American eighth graders and whether differences existed relative to poverty status and depth of poverty. Data were extracted from the National Educational Longitudinal Study of 1988. An independent data set of 3,009 students was created including information for students identifying…

  9. Mesa Verde: A Study of Man in an Agricultural Setting. Student Manual.

    ERIC Educational Resources Information Center

    Community Health Service (DHEW/PHS), Bethesda, MD.

    This student manual contains information and guides to assist the secondary student in functioning as an archeologist. Included are fables, pictures for analysis, a time line and description of the pre-history of Mesa Verde, Colorado. The manual concludes with artifact identification word sheets. A related document is ED 001 722. (AWW)

  10. Engaging Hispanic Students in Agricultural Education and the FFA: A 3-Year Case Study

    ERIC Educational Resources Information Center

    Roberts, T. Grady; Hall, Johnathan L.; Briers, Gary E.; Gill, Ernie; Shinn, Glen C.; Larke, Alvin, Jr.; Jaure, Paul

    2009-01-01

    This article describes the outcomes of field-based efforts to increase diversity in agricultural education programs and the FFA. This study focused on three schools in San Antonio, Texas. Guided by Rogers' (2003) theories of diffusion of innovations, a series of six intervention strategies was implemented: (a) provide specific FFA or agricultural…

  11. Grade Performance of Face-to-Face versus Online Agricultural Economics Students

    ERIC Educational Resources Information Center

    Greenway, Gina A.; Makus, Larry D.

    2014-01-01

    Online course offerings have been growing at a rapid pace in post-secondary education. An ordered probit model is estimated to analyze the effects of online vs. face-to-face course format in achieving specific letter grades. An upper-division agricultural economics course taught over 9 years using both formats is used for the analysis. For a…

  12. An Exploratory Analysis of Student-Community Interactions in Urban Agriculture

    ERIC Educational Resources Information Center

    Grossman, Julie; Sherard, Maximilian; Prohn, Seb M.; Bradley, Lucy; Goodell, L. Suzanne; Andrew, Katherine

    2012-01-01

    Urban agriculture initiatives are on the rise, providing healthy food while teaching a land ethic to youth. In parallel, increasing numbers of university graduates are obtaining Extension work requiring the effective communication of science in a diverse, urban, low-income setting. This study evaluates a pilot service-learning program, the…

  13. Career Orientations of Female Students Enrolling in Agricultural Curricula at Clemson University.

    ERIC Educational Resources Information Center

    Pettigrew, Nancy J.; Boyd, Virlyn A.

    The study determined the occupational values of 166 female home economics freshmen and 33 female agricultural freshmen at Winthrop College by asking the question: "In picking the job you would most like to have, how important are the following things about the job?" The freshmen rated by importance seven items: (1) high salary, (2) steady…

  14. 75 FR 8652 - Foreign-Trade Zone 59-Lincoln, NE Application for Subzone CNH America, LLC (Agricultural...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-25

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF COMMERCE Foreign-Trade Zones Board Foreign-Trade Zone 59--Lincoln, NE Application for Subzone CNH America, LLC (Agricultural Machinery Manufacturing) Grand Island, NE An application has been submitted to the Foreign-Trade Zones Board (the Board) by the...

  15. Development and application of an agricultural intensity index to invertebrate and algal metrics from streams at two scales

    USGS Publications Warehouse

    Waite, Ian R.

    2013-01-01

    Research was conducted at 28-30 sites within eight study areas across the United States along a gradient of nutrient enrichment/agricultural land use between 2003 and 2007. Objectives were to test the application of an agricultural intensity index (AG-Index) and compare among various invertebrate and algal metrics to determine indicators of nutrient enrichment nationally and within three regions. The agricultural index was based on total nitrogen and phosphorus input to the watershed, percent watershed agriculture, and percent riparian agriculture. Among data sources, agriculture within riparian zone showed significant differences among values generated from remote sensing or from higher resolution orthophotography; median values dropped significantly when estimated by orthophotography. Percent agriculture in the watershed consistently had lower correlations to invertebrate and algal metrics than the developed AG-Index across all regions. Percent agriculture showed fewer pairwise comparisons that were significant than the same comparisons using the AG-Index. Highest correlations to the AG-Index regionally were −0.75 for Ephemeroptera, Plecoptera, and Trichoptera richness (EPTR) and −0.70 for algae Observed/Expected (O/E), nationally the highest was −0.43 for EPTR vs. total nitrogen and −0.62 for algae O/E vs. AG-Index. Results suggest that analysis of metrics at national scale can often detect large differences in disturbance, but more detail and specificity is obtained by analyzing data at regional scales.

  16. Application of food industry waste to agricultural soils mitigates green house gas emissions.

    PubMed

    Rashid, M T; Voroney, R P; Khalid, M

    2010-01-01

    Application of organic waste materials such as food processing and serving industry cooking oil waste (OFW) can recycle soil nitrate nitrogen (NO(3)-N), which is otherwise prone to leaching after the harvest of crop. Nitrogen (N) recycling will not only reduce the amount of N fertilizer application for corn crop production but is also expected to mitigate green house gas (GHG) emissions by saving energy to be used for the production of the same amount of industrial fertilizer N required for the growth of corn crop. Application of OFW at 10Mg solid ha(-1)y(-1) conserved 68 kg N ha(-1)y(-1) which ultimately saved 134 L diesel ha(-1)y(-1), which would otherwise be used for the production of fertilizer N as urea. Average fossil energy substitution value (FESV) of N conserved/recycled was calculated to be 93 US$ ha(-1)y(-1), which is about 13 million US$y(-1). Potential amount of GHG mitigation through the application of OFW to agricultural soils in Canada is estimated to be 57 Gg CO(2)Eq y(-1). PMID:19765979

  17. Application of sewage sludge to non-agricultural ecosystems: Impacts of nitrogen on forests

    SciTech Connect

    Efroymson, R.A.; Tharp, M.L.; Luxmoore, R.J.; Sample, B.E.; Barnthouse, L.W.; Daniel, F.B.

    1995-12-31

    The Clean Water Act (CWA) of 1977 directed EPA to establish standards for use and disposal of sewage sludge (biosolids). This report is part of a larger study evaluating nutrient and contaminant impacts associated with the land application of biosolids in non-agricultural ecosystems. Ecological risk assessments rarely focus on nutrients as stressors. The nutrient components of municipal sewage sludge may impact tree community composition, growth and production, habitat and forage quality for wildlife, and nutrient cycling. The focus here is on three forest ecosystems: northwestern Douglas-fir forest (Pack Forest, WA), southeastern loblolly pine plantation (Athens, GA), and eastern deciduous forest (Hubbard Brook, NH). A model called LINKAGES has been developed at ORNL to examine the relationships between nitrogen cycling and long-term forest stand dynamics, limited by climate and soil water status. Plant-available nitrogen from biosolids is added in several application scenarios and compared to the no-amendment case. All changes are noted, even if they may be viewed as benefits rather than risks. Model outputs include: above-ground biomass, individual species biomass, net above-ground production, leaf litter, evapotranspiration, available nitrogen, and dead trunks. The changes in plant community composition and production are dependent on the rate, frequency, and duration of sludge application and on the age of the stand at the time of application. Model outputs are compared to empirical studies of forests where biosolids have been applied.

  18. Market assessment of photovoltaic power systems for agricultural applications in Morocco

    NASA Technical Reports Server (NTRS)

    Steingass, H.; Asmon, I.

    1981-01-01

    Results of a month-long study in Morocco aimed at assessing the market potential for stand-alone photovoltaic systems in agriculture and rural service applications are presented. The following applications, requiring less than 15 kW of power, are described: irrigation, cattle watering, refrigeration, crop processing, potable water and educational TV. Telecommunications and transportation signalling applications, descriptions of power and energy use profiles, assessments of business environment, government and private sector attitudes towards photovoltaics, and financing were also considered. The Moroccan market presents both advantages and disadvantages for American PV manufacturers. The principle advantages of the Moroccan market are: a limited grid, interest in and present use of PV in communications applications, attractive investment incentives, and a stated policy favoring American investment. Disadvantages include: lack of government incentives for PV use, general unfamiliarity with PV technology, high first cost of PV, a well-established market network for diesel generators, and difficulty with financing. The market for PV in Morocco (1981-1986), will be relatively small, about 340 kwp. The market for PV is likely to be more favorable in telecommunications, transport signalling and some rural services. The primary market appears to be in the public (i.e., government) rather than private sector, due to financial constraints and the high price of PV relative to conventional power sector.

  19. Market assessment of photovoltaic power systems for agricultural applications in Morocco

    NASA Astrophysics Data System (ADS)

    Steingass, H.; Asmon, I.

    1981-09-01

    Results of a month-long study in Morocco aimed at assessing the market potential for stand-alone photovoltaic systems in agriculture and rural service applications are presented. The following applications, requiring less than 15 kW of power, are described: irrigation, cattle watering, refrigeration, crop processing, potable water and educational TV. Telecommunications and transportation signalling applications, descriptions of power and energy use profiles, assessments of business environment, government and private sector attitudes towards photovoltaics, and financing were also considered. The Moroccan market presents both advantages and disadvantages for American PV manufacturers. The principle advantages of the Moroccan market are: a limited grid, interest in and present use of PV in communications applications, attractive investment incentives, and a stated policy favoring American investment. Disadvantages include: lack of government incentives for PV use, general unfamiliarity with PV technology, high first cost of PV, a well-established market network for diesel generators, and difficulty with financing. The market for PV in Morocco (1981-1986), will be relatively small, about 340 kwp. The market for PV is likely to be more favorable in telecommunications, transport signalling and some rural services. The primary market appears to be in the public (i.e., government) rather than private sector, due to financial constraints and the high price of PV relative to conventional power sector.

  20. Students' Risk Perceptions of Nanotechnology Applications: Implications for science education

    NASA Astrophysics Data System (ADS)

    Gardner, Grant; Jones, Gail; Taylor, Amy; Forrester, Jennifer; Robertson, Laura

    2010-09-01

    Scientific literacy as a goal of a science education reform remains an important discourse in the research literature and is a key component of students' understanding and acceptance of emergent technologies like nanotechnology. This manuscript focuses on undergraduate engineering students' perceptions of the risks and benefits posed by nanotechnology as an important component of scientific literacy. Specifically, this study examined the perceived risk of nanotechnology of a group of American students (N = 102) in three material science engineering courses focusing on nanotechnology. Students completed a survey of risk perception and a sub-sample were interviewed (n = 21). It was found that perceptions of risks and benefits of nanotechnology tended to be closely tied to specific groups of applications including common consumer products, health-related products, and advanced technological applications. The intersection of scientific application and perception is discussed in the context of science education curriculum considerations.

  1. Acute Pesticide Illnesses Associated with Off-Target Pesticide Drift from Agricultural Applications: 11 States, 1998–2006

    PubMed Central

    Lee, Soo-Jeong; Mehler, Louise; Beckman, John; Diebolt-Brown, Brienne; Prado, Joanne; Lackovic, Michelle; Waltz, Justin; Mulay, Prakash; Schwartz, Abby; Mitchell, Yvette; Moraga-McHaley, Stephanie; Gergely, Rita

    2011-01-01

    Background: Pesticides are widely used in agriculture, and off-target pesticide drift exposes workers and the public to harmful chemicals. Objective: We estimated the incidence of acute illnesses from pesticide drift from outdoor agricultural applications and characterized drift exposure and illnesses. Methods: Data were obtained from the National Institute for Occupational Safety and Health’s Sentinel Event Notification System for Occupational Risks–Pesticides program and the California Department of Pesticide Regulation. Drift included off-target movement of pesticide spray, volatiles, and contaminated dust. Acute illness cases were characterized by demographics, pesticide and application variables, health effects, and contributing factors. Results: From 1998 through 2006, we identified 2,945 cases associated with agricultural pesticide drift from 11 states. Our findings indicate that 47% were exposed at work, 92% experienced low-severity illness, and 14% were children (< 15 years). The annual incidence ranged from 1.39 to 5.32 per million persons over the 9-year period. The overall incidence (in million person-years) was 114.3 for agricultural workers, 0.79 for other workers, 1.56 for nonoccupational cases, and 42.2 for residents in five agriculture-intensive counties in California. Soil applications with fumigants were responsible for the largest percentage (45%) of cases. Aerial applications accounted for 24% of cases. Common factors contributing to drift cases included weather conditions, improper seal of the fumigation site, and applicator carelessness near nontarget areas. Conclusions: Agricultural workers and residents in agricultural regions had the highest rate of pesticide poisoning from drift exposure, and soil fumigations were a major hazard, causing large drift incidents. Our findings highlight areas where interventions to reduce off-target drift could be focused. PMID:21642048

  2. Students' Opinions on the Light Pollution Application

    ERIC Educational Resources Information Center

    Özyürek, Cengiz; Aydin, Güliz

    2015-01-01

    The purpose of this study is to determine the impact of computer-animated concept cartoons and outdoor science activities on creating awareness among seventh graders about light pollution. It also aims to identify the views of the students on the activities that were carried out. This study used one group pre-test/post-test experimental design…

  3. Biotechnology Enters Vocational Agriculture.

    ERIC Educational Resources Information Center

    Martin, Robert A.

    1988-01-01

    Points out that the agriculture industry is changing and that vocational agriculture students must learn more science than before to be prepared. Iowa formed groups of educators and business representatives to advise on which curricula should be funded. (JOW)

  4. Pesticide Exposure and Depression among Male Private Pesticide Applicators in the Agricultural Health Study

    PubMed Central

    Beard, John D.; Umbach, David M.; Hoppin, Jane A.; Richards, Marie; Alavanja, Michael C.R.; Blair, Aaron; Sandler, Dale P.

    2014-01-01

    Background: Pesticide exposure may be positively associated with depression. Few previous studies have considered the episodic nature of depression or examined individual pesticides. Objective: We evaluated associations between pesticide exposure and depression among male private pesticide applicators in the Agricultural Health Study. Methods: We analyzed data for 10 pesticide classes and 50 specific pesticides used by 21,208 applicators enrolled in 1993–1997 who completed a follow-up telephone interview in 2005–2010. We divided applicators who reported a physician diagnosis of depression (n = 1,702; 8%) into those who reported a previous diagnosis of depression at enrollment but not follow-up (n = 474; 28%), at both enrollment and follow-up (n = 540; 32%), and at follow-up but not enrollment (n = 688; 40%) and used polytomous logistic regression to estimate odds ratios (ORs) and 95% CIs. We used inverse probability weighting to adjust for potential confounders and to account for the exclusion of 3,315 applicators with missing covariate data and 24,619 who did not complete the follow-up interview. Results: After weighting for potential confounders, missing covariate data, and dropout, ever-use of two pesticide classes, fumigants and organochlorine insecticides, and seven individual pesticides—the fumigants aluminum phosphide and ethylene dibromide; the phenoxy herbicide (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T); the organochlorine insecticide dieldrin; and the organophosphate insecticides diazinon, malathion, and parathion—were all positively associated with depression in each case group, with ORs between 1.1 and 1.9. Conclusions: Our study supports a positive association between pesticide exposure and depression, including associations with several specific pesticides. Citation: Beard JD, Umbach DM, Hoppin JA, Richards M, Alavanja MCR, Blair A, Sandler DP, Kamel F. 2014. Pesticide exposure and depression among male private pesticide applicators in the

  5. A background to nuclear transfer and its applications in agriculture and human therapeutic medicine*

    PubMed Central

    Campbell, Keith HS

    2002-01-01

    The development of a single celled fertilized zygote to an animal capable of reproduction involves not only cell division but the differentiation or specialization to numerous cell types forming each tissue and organ of the adult animal. The technique of nuclear transfer allows the reconstruction of an embryo by the transfer of genetic material from a single donor cell, to an unfertilized egg from which the genetic material has been removed. Successful development of live offspring from such embryos demonstrates that the differentiated state of the donor nucleus is not fixed and can be reprogrammed by the egg cytoplasm to control embryo and fetal development. Nuclear transfer has many applications in agriculture and human medicine. This article will review some of the factors associated with the success of embryo development following nuclear transfer and outline the potential uses of the technology. PMID:12033731

  6. A GIS-based approach for spatial analysis of agricultural nitrogen pollution and its application

    NASA Astrophysics Data System (ADS)

    Lu, Liping; Liu, Weidong; Sun, Lin; Qin, Zhihao

    2009-10-01

    Agricultural pollution, which has a direct impact on the water, soil and air quality, is a common but increasingly serious environmental problem nowadays. The misusage of fertilizer, high application fertilizer and low utilization rate, are the major factors of the pollution. Therefore, the pollution caused by nitrate nitrogen has posed a very serious problem to the ecological environment. Combined with the GIS technology, this paper takes Majiang County in Guizhou province that is at southwest of China as a case, to carry out the research on the calculation of the nitrogen surplus in paddy field and the dry land based on the farmland nutrient balance model using the fertilizer amount. This paper reveals the spatial distribution characteristic of the nitrogen pollution, which can help to find a reasonable crop cultivation and fertilization methods to increase the effective utilization fertilization and therefore reduce the pollution.

  7. Remote sensing with simulated unmanned aircraft imagery for precision agriculture applications

    USGS Publications Warehouse

    Hunt, E. Raymond, Jr.; Daughtry, Craig S.T.; Mirsky, Steven B.; Hively, W. Dean

    2014-01-01

    An important application of unmanned aircraft systems (UAS) may be remote-sensing for precision agriculture, because of its ability to acquire images with very small pixel sizes from low altitude flights. The objective of this study was to compare information obtained from two different pixel sizes, one about a meter (the size of a small vegetation plot) and one about a millimeter. Cereal rye (Secale cereale) was planted at the Beltsville Agricultural Research Center for a winter cover crop with fall and spring fertilizer applications, which produced differences in biomass and leaf chlorophyll content. UAS imagery was simulated by placing a Fuji IS-Pro UVIR digital camera at 3-m height looking nadir. An external UV-IR cut filter was used to acquire true-color images; an external red cut filter was used to obtain color-infrared-like images with bands at near-infrared, green, and blue wavelengths. Plot-scale Green Normalized Difference Vegetation Index was correlated with dry aboveground biomass ( ${mbi {r}} = 0.58$ ), whereas the Triangular Greenness Index (TGI) was not correlated with chlorophyll content. We used the SamplePoint program to select 100 pixels systematically; we visually identified the cover type and acquired the digital numbers. The number of rye pixels in each image was better correlated with biomass ( ${mbi {r}} = 0.73$ ), and the average TGI from only leaf pixels was negatively correlated with chlorophyll content ( ${mbi {r}} = -0.72$ ). Thus, better information for crop requirements may be obtained using very small pixel sizes, but new algorithms based on computer vision are needed for analysis. It may not be necessary to geospatially register large numbers of photographs with very small pixel sizes. Instead, images could be analyzed as single plots along field transects.

  8. Automated genomic DNA purification options in agricultural applications using MagneSil paramagnetic particles

    NASA Astrophysics Data System (ADS)

    Bitner, Rex M.; Koller, Susan C.

    2002-06-01

    The automated high throughput purification of genomic DNA form plant materials can be performed using MagneSil paramagnetic particles on the Beckman-Coulter FX, BioMek 2000, and the Tecan Genesis robot. Similar automated methods are available for DNA purifications from animal blood. These methods eliminate organic extractions, lengthy incubations and cumbersome filter plates. The DNA is suitable for applications such as PCR and RAPD analysis. Methods are described for processing traditionally difficult samples such as those containing large amounts of polyphenolics or oils, while still maintaining a high level of DNA purity. The robotic protocols have ben optimized for agricultural applications such as marker assisted breeding, seed-quality testing, and SNP discovery and scoring. In addition to high yield purification of DNA from plant samples or animal blood, the use of Promega's DNA-IQ purification system is also described. This method allows for the purification of a narrow range of DNA regardless of the amount of additional DNA that is present in the initial sample. This simultaneous Isolation and Quantification of DNA allows the DNA to be used directly in applications such as PCR, SNP analysis, and RAPD, without the need for separate quantitation of the DNA.

  9. HYPOTHYROIDISM AND PESTICIDE USE AMONG MALE PRIVATE PESTICIDE APPLICATORS IN THE AGRICULTURAL HEALTH STUDY

    PubMed Central

    Goldner, Whitney S.; Sandler, Dale P.; Yu, Fang; Shostrom, Valerie; Hoppin, Jane A.; Kamel, Freya; LeVan, Tricia D.

    2013-01-01

    Objective Evaluate the association between thyroid disease and use of insecticides, herbicides, fumigants/fungicides in male applicators in the Agricultural Health Study. Methods We examined the association between use of 50 specific pesticides and self-reported hypothyroidism, hyperthyroidism, and ‘other’ thyroid disease among 22,246 male pesticide applicators. Results There was increased odds of hypothyroidism with ever-use of the herbicides 2,4-D, 2,4,5-T, 2,4,5-TP, alachlor, dicamba, and petroleum oil. Hypothyroidism was also associated with ever-use of eight insecticides: organochlorines chlordane, DDT, heptachlor, lindane, and toxaphene; organophosphates diazinon and malathion; and the carbamate carbofuran. Exposure-response analysis showed increasing odds with increasing level of exposure for the herbicides alachlor and 2,4-D, and the insecticides aldrin, chlordane, DDT, lindane, and parathion. Conclusions There is an association between hypothyroidism and specific herbicides and insecticides in male applicators, similar to previous results for spouses. PMID:24064777

  10. Economical and environmental implications of solid waste compost applications to agricultural fields in Punjab, Pakistan.

    PubMed

    Qazi, M Akram; Akram, M; Ahmad, N; Artiola, Janick F; Tuller, M

    2009-09-01

    Application of municipal solid waste compost (MSWC) to agricultural soils is becoming an increasingly important global practice to enhance and sustain soil organic matter (SOM) and fertility levels. Potential risks associated with heavy metals and phosphorus accumulations in surface soils may be minimized with integrated nutrient management strategies that utilize MSWC together with mineral fertilizers. To explore the economic feasibility of MSWC applications, nutrient management plans were developed for rice-wheat and cotton-wheat cropping systems within the Punjab region of Pakistan. Three-year field trials were conducted to measure yields and to determine the economic benefits using three management strategies and two nutrient doses. Management strategies included the application of mineral fertilizers as the sole nutrient source and application of mineral fertilizers in combination with MSWC with and without pesticide/herbicide treatments. Fertilizer doses were either based on standard N, P and K recommendations or on measured site-specific soil plant available phosphorus (PAP) levels. It was found that combining MSWC and mineral fertilizer applications based on site-specific PAP levels with the use of pesticides and herbicides is an economically and environmentally viable management strategy. Results show that incorporation of MSWC improved soil physical properties such as bulk density and penetration resistance. The PAP levels in the surface layer increased by the end of the trials relative to the initial status. No potential risks of heavy metal (Zn, Cd, Cr, Pb and Ni) accumulation were observed. Treatments comprised of MSWC and mineral fertilizer adjusted to site-specific PAP levels and with common pest management showed highest cumulative yields. A basic economic analysis revealed a significantly higher cumulative net profit and value-to-cost ratio (VCR) for all site-specific doses. PMID:19501499

  11. Effect of application rate on fumigant degradation in five agricultural soils.

    PubMed

    Qin, Ruijun; Gao, Suduan; Ajwa, Husein; Hanson, Bradley D

    2016-01-15

    Soil fumigation is an important pest management tool for many high value crops. To address the knowledge gap of how fumigant concentration in soil impacts dissipation, and thereby efficacy, this research determined the degradation characteristics of four fumigants as affected by application rate. Laboratory incubation experiments were conducted to determine degradation rates of 1,3-dichloropropene (both cis- and trans isomers), chloropicrin (CP), dimethyl disulfide (DMDS), and methyl iodide (MeI) in five agricultural soils. Fitted to pseudo first-order kinetics, the degradation rate constant (k) of CP, DMDS, and MeI decreased significantly as application rate increased while the 1,3-D isomers were the least affected by rate. Half-lives increased 12, 17, and 6-fold for CP, DMDS, and MeI, respectively, from the lowest to the highest application rate. At low application rates, the degradation rate of all fumigants in the Hueneme sandy loam soil was reduced by 50-95% in sterilized soil compared to the biologically active controls. However, this difference became much smaller or disappeared at high application rates indicating that biodegradation dominates at low concentrations but chemical degradation is more important at high concentrations. When co-applied, CP degradation was enhanced with biodegradation remained above 50%, while 1,3-D degradation was either reduced or not changed. Among the fumigants tested, the relative importance of biodegradation was DMDS>CP>MeI>1,3-D. These results are useful for determining effective fumigation rates and for informing regulatory decisions on emission controls under different fumigation scenarios. PMID:26439645

  12. A review of theoretical frameworks applicable for designing agricultural watershed restoration projects

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Agricultural watershed restoration is the process of assisting the recovery of ecosystem structure and/or function within watersheds that have been degraded and damaged by agriculture. Unfortunately, agricultural watershed restoration is the rare exception within the Midwestern United States despit...

  13. Agricultural Knowledge in Urban and Resettled Communities: Applications to Social-Ecological Resilience and Environmental Education

    ERIC Educational Resources Information Center

    Shava, Soul; Krasny, Marianne E.; Tidball, Keith G.; Zazu, Cryton

    2010-01-01

    In light of globalising trends toward urbanisation and resettlement, we explore how agricultural knowledges may be adapted and applied among relocated people. Although indigenous and related forms of practice-based knowledge may be temporarily lost as people adopt commercial agricultural practices and switch to non-agricultural livelihoods, they…

  14. Development and application of fuzzy indicator for assessment of agricultural land resources

    Technology Transfer Automated Retrieval System (TEKTRAN)

    With ever increasing demands on agriculture, it is essential that we be able to adequately evaluate agriculture land resources. Recently, efforts have been undertaken to develop methods and tools for the purpose of evaluating agricultural land resources. However, to be successful, assessments need...

  15. Greenhouse Operation and Management. Instructor Guide and Student Reference. Missouri Agricultural Education. Volume 21, Number 3.

    ERIC Educational Resources Information Center

    Wells, Judith A.; And Others

    These student and instructor materials for a one-semester course intended for high school juniors and seniors teach the following 24 lessons: (1) the scope and development of greenhouse production; (2) the economic importance of greenhouse crops; (3) careers in greenhouse operation and management; (4) greenhouse parts, structures, and coverings;…

  16. Feedlot Nutritionist Boot Camp: An Intensive Short-Course for Commercial Agriculture Graduate Students

    ERIC Educational Resources Information Center

    Reinhardt, Chris; Hubbert, Mike

    2014-01-01

    In the digital age, face-to-face meetings combining didactic and experiential learning are valuable. Beef cattle nutrition graduate students (n = 33) from 11 universities attended a 5-day feedlot nutrition and management short-course. Topics included nutrition, veterinary medicine, feedmill maintenance, and management of the financial and human…

  17. Agricultural Electricity. Electric Controls. Student Manual. Report No. 820/20.

    ERIC Educational Resources Information Center

    Benson, Robert T.

    Addressed to the student, this manual presents terms, abbreviations, and symbols used in discussing manual or automatic control of the flow of electric current. Diagrams accompany discussion of the following types of control devices and principles of operation: Heat sensitive controls (thermostats, thermal relays), light sensitive controls…

  18. Teaching the Disadvantaged: A Curriculum Guide for Classes of Disadvantaged Students in Agricultural Education Programs.

    ERIC Educational Resources Information Center

    Crunkilton, John R.

    The guide begins with some observations on teaching disadvantaged students, a list of successful types of learning activities, and recommendations for planning and conducting an effective classroom situation. Also included are 13 general objectives of a program for the disadvantaged. The guide, intended as a source of ideas and directions in…

  19. Predicting Intercultural Sensitivity Using Demographic Variables among College of Agriculture Undergraduate Students

    ERIC Educational Resources Information Center

    Fabregas Janeiro, Maria G.; Kelsey, Kathleen D.; Robinson, Shane J.

    2012-01-01

    Employers seek interculturally sensitive professionals who can successfully navigate among a variety of cultures and serve as ambassadors to promote commerce internationally. To facilitate the development of interculturally sensitive citizens, universities offer students a variety of opportunities, such as studying abroad and internationally…

  20. A novel application of theory refinement to student modeling

    SciTech Connect

    Baffes, P.T.; Mooney, R.J.

    1996-12-31

    Theory refinement systems developed in machine learning automatically modify a knowledge base to render it consistent with a set of classified training examples. We illustrate a novel application of these techniques to the problem of constructing a student model for an intelligent tutoring system (ITS). Our approach is implemented in an ITS authoring system called ASSERT which uses theory refinement to introduce errors into an initially correct knowledge base so that it models incorrect student behavior. The efficacy of the approach has been demonstrated by evaluating a tutor developed with ASSERT with 75 students tested on a classification task covering concepts from an introductory course on the C{sup ++} programming language. The system produced reasonably accurate models and students who received feedback based on these models performed significantly better on a post test than students who received simple reteaching.

  1. Unexpected stimulation of soil methane uptake as emergent property of agricultural soils following bio-based residue application.

    PubMed

    Ho, Adrian; Reim, Andreas; Kim, Sang Yoon; Meima-Franke, Marion; Termorshuizen, Aad; de Boer, Wietse; van der Putten, Wim H; Bodelier, Paul L E

    2015-10-01

    Intensification of agriculture to meet the global food, feed, and bioenergy demand entail increasing re-investment of carbon compounds (residues) into agro-systems to prevent decline of soil quality and fertility. However, agricultural intensification decreases soil methane uptake, reducing, and even causing the loss of the methane sink function. In contrast to wetland agricultural soils (rice paddies), the methanotrophic potential in well-aerated agricultural soils have received little attention, presumably due to the anticipated low or negligible methane uptake capacity in these soils. Consequently, a detailed study verifying or refuting this assumption is still lacking. Exemplifying a typical agricultural practice, we determined the impact of bio-based residue application on soil methane flux, and determined the methanotrophic potential, including a qualitative (diagnostic microarray) and quantitative (group-specific qPCR assays) analysis of the methanotrophic community after residue amendments over 2 months. Unexpectedly, after amendments with specific residues, we detected a significant transient stimulation of methane uptake confirmed by both the methane flux measurements and methane oxidation assay. This stimulation was apparently a result of induced cell-specific activity, rather than growth of the methanotroph population. Although transient, the heightened methane uptake offsets up to 16% of total gaseous CO2 emitted during the incubation. The methanotrophic community, predominantly comprised of Methylosinus may facilitate methane oxidation in the agricultural soils. While agricultural soils are generally regarded as a net methane source or a relatively weak methane sink, our results show that methane oxidation rate can be stimulated, leading to higher soil methane uptake. Hence, even if agriculture exerts an adverse impact on soil methane uptake, implementing carefully designed management strategies (e.g. repeated application of specific residues) may

  2. The effects of a socioscientific issues instructional model in secondary agricultural education on students' content knowledge, scientific reasoning ability, argumentation skills, and views of the nature of science

    NASA Astrophysics Data System (ADS)

    Shoulders, Catherine Woglom

    The purpose of this study was to determine the effects of a socioscientific issues-based instructional model on secondary agricultural education students' content knowledge, scientific reasoning ability, argumentation skills, and views of the nature of science. This study utilized a pre-experimental, single group pretest-posttest design to assess the impacts of a nine-week unit that incorporated a socioscientific issue into instruction on secondary agriculture students' agriscience content knowledge, scientific reasoning ability, argumentation skills, and views of the nature of science. The population for this study was Florida's secondary students enrolled in agricultural education. The accessible population was students enrolled in Agriscience Foundations classes in Florida. A convenience sample of Florida's Agriscience Foundations teachers attending a summer professional development or Chapter Officer Leadership Training session was taken. Paired-samples t tests were conducted to determine the impact the treatment had on students' agriscience content knowledge on distal and proximal assessments, as well as on students' scientific reasoning ability, argumentation skills related to number of argumentation justifications and quality of those justifications, and views of the nature of science. Paired-samples t tests were also conducted to determine whether the treatment yielded results with middle school or high school students. Statistical analysis found significant improvements in students' agriscience content knowledge, scientific reasoning ability, and argumentation skills. High school students' scores resulted in significant improvements in proximal content knowledge assessments and argumentation justification quality. Middle school students' scores resulted in significant improvements in proximal content knowledge assessments and scientific reasoning ability. No significant difference was found between students' views of the nature of science before and after

  3. Interactive Web-Mapping System for Satellite Based Agricultural Applications in Bulgaria and Romania

    NASA Astrophysics Data System (ADS)

    Craciunescu, Vasile; Stancalie, Gheorghe; Roumenina, Eugenia; Kazandjiev, Valentin; Jelev, Georgi; Filchev, Lachezar; Savin, Elena; Catana, Simona; Mihailescu, Denis

    2012-06-01

    The interactive web-mapping system for satellite based agricultural application in Bulgaria and Romania was developed in the frame if the PROA GROB URO project. To achieve the project objectives a large amount of geospatial data was collected in the form of satellite images, maps and vector layers. Furthermore, the field measurements and descriptions were linked with the exact location where they have been made. There was a strong need to be able to analyse the data in an integrated way. Thus, a geodatabase was necessary with corresponding web-interface and applications providing data access to each of the partners. Using the newest Internet technologies a set of tools for creating and online publishing of geospatial data was successfully implemented The system components were developed entirely with standard compliant free and open source software like GDAL/OGR. GeoServer, OpenLayers and PostgreSQL+PostGIS. GMES recommendations and INSPIRE directive were taken into account when designing and implementing the system.

  4. Application of sewage sludge to non-agricultural ecosystems: Assessment of contaminant risks to wildlife

    SciTech Connect

    Sample, B.E.; Efroymson, R.A.; Barnthouse, L.W.; Daniel, F.B.

    1995-12-31

    This report is part of a larger study evaluating nutrient and contaminant impacts associated with the land application of biosolids in four non-agricultural ecosystems: Pacific Northwest forests, semi-arid rangelands, eastern deciduous forests, and southeasternpine plantations. Because contaminants in biosolids may be taken up by biota and transferred through the food web, they may present a risk to wildlife. Biosolids application scenarios that reflect actual practices in each ecosystem were developed. Concentrations of contaminants in biosolids were obtained from the US EPA`s 1988 National Sewage Sludge Survey. Soil-biota uptake factors for contaminants in sludge were developed from contaminant studies performed in each ecosystem type. Where ecosystem-specific data were unavailable, more generalized factors were used. Endpoints were selected that reflected species expected to be present in each ecosystem. Four trophic groups were considered: herbivores (e.g., deer) vermivores (earthworm-consumers; e.g., shrews), insectivores (e.g., songbirds), and carnivores (e.g., fox). Contaminant concentrations in wildlife foods were estimated using the uptake factors. These estimates were then incorporated into models to estimate the contaminant exposure for endpoints in each trophic group in each ecosystem. Exposure estimates were then compared to NOAELs and LOAELs to determine the nature and magnitude of risks that biosolids may present to wildlife.

  5. A summary of the history of the development of automated remote sensing for agricultural applications

    NASA Technical Reports Server (NTRS)

    Macdonald, R. B.

    1983-01-01

    The research conducted in the United States for the past 20 years with the objective of developing automated satellite remote sensing for monitoring the earth's major food crops is reviewed. The highlights of this research include a National Academy of Science study on the applicability of remote sensing monitoring given impetus by the introduction in the mid-1960's of the first airborne multispectral scanner (MSS); design simulations for the first earth resource satellite in 1969; and the use of the airborne MSS in the Corn Blight Watch, the first large application of remote sensing in agriculture, in 1970. Other programs discussed include the CITAR research project in 1972 which established the feasibility of automating digital classification to process high volumes of Landsat MSS data; the Large Area Crop Inventory Experiment (LACIE) in 1974-78, which demonstrated automated processing of Landsat MSS data in estimating wheat crop production on a global basis; and AgRISTARS, a program designed to address the technical issues defined by LACIE.

  6. Market assessment of photovoltaic power systems for agricultural applications in Colombia

    NASA Technical Reports Server (NTRS)

    Steigelmann, W.; Neyeloff, S.

    1981-01-01

    The market potential for photovoltaic systems in the agricultural sector of Colombia is assessed. Consideration was given to over twenty specific livestock production, crop production, and rural services applications requiring less than 15 kW of power without backup power. Analysis revealed that near-term potential exists for photovoltaic technology in applications in coffee depulging, cattle watering, rural domestic users, rural water supply and small irrigation, rural telephones, rural health posts, and vaccine refrigeration. Market size would be in the 1200 to 2500 kWp range in the 1981 to 86 timeframe. Positive factors influencing the market size include a lack of electrical services, potential for developing the Llanos Orientales Territory, high fuel costs in remote areas, balance of system availability, the presence of wealthy land owners, and a large government-sponsored contract for photovoltaic (PV)-powered rural telephone systems. The anticipated eligibility of photovoltaic equipment for loans would be a further positive factor in market potential. Important negative factors include relatively inexpensive energy in developed locations, reliance on hydropower, lack of familiarity with PV equipment, a lack of financing, and established foreign competition in PV technology. Recommendations to American PV manufacturers attempting to develop the Colombian market are given.

  7. Market assessment of photovoltaic power systems for agricultural applications in Colombia

    SciTech Connect

    Steigelmann, W.; Neyeloff, S.

    1981-11-01

    An assessment is made of the market potential for photovoltaic systems in the agricultural sector of Colombia. Consideration was given to over twenty specific livestock production, crop production, and rural services applications requiring less than 15 KW of power without backup power. Analysis revealed that near-term potential exists for photovoltaic technology in applications in coffee depulging, cattle watering, rural domestic users, rural water supply and small irrigation, rural telephones, rural health posts, and vaccine refrigeration. Market size would be in the 1200 to 2500 KWp range in the 1981-86 timeframe. Positive factors influencing the market size include a lack of electrical services, potential for developing the Llanos Orientales Territory, high fuel costs in remote areas, balance of system availability, the presence of wealthy land owners, and a large government-sponsored contract for PV-powered rural telephone systems. The anticipated eligibility of photovoltaic equipment for loans under the Fifth Law would be a further positive factor in market potential. Important negative factors include relatively inexpensive energy in developed locations, reliance on hydropower, lack of familarity with PV equipment, a lack of financing, and established foreign competition in PV technology. Recommendations to American PV manufacturers attempting to develop the Colombian market are to offer complete systems, perform as much production and assembly of systems as possible in Colombia or another Andean Pact country to avoid higher tariffs, and consider forming corporations with majority Colombian participation in light or trade advantages.

  8. Market assessment of photovoltaic power systems for agricultural applications in Colombia

    NASA Astrophysics Data System (ADS)

    Steigelmann, W.; Neyeloff, S.

    1981-11-01

    The market potential for photovoltaic systems in the agricultural sector of Colombia is assessed. Consideration was given to over twenty specific livestock production, crop production, and rural services applications requiring less than 15 kW of power without backup power. Analysis revealed that near-term potential exists for photovoltaic technology in applications in coffee depulging, cattle watering, rural domestic users, rural water supply and small irrigation, rural telephones, rural health posts, and vaccine refrigeration. Market size would be in the 1200 to 2500 kWp range in the 1981 to 86 timeframe. Positive factors influencing the market size include a lack of electrical services, potential for developing the Llanos Orientales Territory, high fuel costs in remote areas, balance of system availability, the presence of wealthy land owners, and a large government-sponsored contract for photovoltaic (PV)-powered rural telephone systems. The anticipated eligibility of photovoltaic equipment for loans would be a further positive factor in market potential. Important negative factors include relatively inexpensive energy in developed locations, reliance on hydropower, lack of familiarity with PV equipment, a lack of financing, and established foreign competition in PV technology. Recommendations to American PV manufacturers attempting to develop the Colombian market are given.

  9. A preliminary evaluation of volcanic rock powder for application in agriculture as soil a remineralizer.

    PubMed

    Ramos, Claudete G; Querol, Xavier; Oliveira, Marcos L S; Pires, Karen; Kautzmann, Rubens M; Oliveira, Luis F S

    2015-04-15

    Mineralogical and geochemical characteristics of volcanic rock residue, from a crushing plant in the Nova Prata Mining District, State of Rio Grande do Sul (RS), Brazil, in this work named rock powder, were investigated in view of its potential application as soil ammendment in agriculture. Abaut 52,400 m(3) of mining waste is generated annually in the city of Nova Prata without a proper disposal. The nutrients potentially available to plants were evaluated through leaching laboratory tests. Nutrient leaching tests were performed in Milli-Q water; citric acid solution 1% and 2% (AC); and oxalic acid solution 1% and 5% (AO). The bulk and leachable contents of 57 elements were determined by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma atomic emission spectroscopy (ICP-AES). Mining waste were made up by CaO, K2O, SiO2, Al2O3, Fe2O3, and P2O5. The analysis by X-ray diffraction (XRD) showed the major occurence of quartz, anorthite, cristobalite, sanidine, and augite. The water leachable concentrations of all elements studied were lower than 1.0mg/kg, indicating their low solubility. Leaching tests in acidic media yield larger leachable fractions for all elements being studied are in the leachate of the AO 1%. These date usefulness of volcanic rock powder as potential natural fertilizer in agriculture in the mining district in Nova Prata, Rio Grande do Sul, Brazil to reduce the use of chemical fertilizers. PMID:25638652

  10. Application of soil quality indices to assess the status of agricultural soils irrigated with treated wastewaters

    NASA Astrophysics Data System (ADS)

    Morugán-Coronado, A.; Arcenegui, V.; García-Orenes, F.; Mataix-Solera, J.; Mataix-Beneyto, J.

    2012-12-01

    The supply of water is limited in some parts of the Mediterranean region, such as southeastern Spain. The use of treated wastewater for the irrigation of agricultural soils is an alternative to using better-quality water, especially in semi-arid regions. On the other hand, this practice can modify some soil properties, change their relationships, the equilibrium reached and influence soil quality. In this work two soil quality indices were used to evaluate the effects of irrigation with treated wastewater in soils. The indices were developed studying different soil properties in undisturbed soils in SE Spain, and the relationships between soil parameters were established using multiple linear regressions. This study was carried out in three areas of Alicante Province (SE Spain) irrigated with wastewater, including four study sites. The results showed slight changes in some soil properties as a consequence of irrigation with wastewater, the obtained levels not being dangerous for agricultural soils, and in some cases they could be considered as positive from an agronomical point of view. In one of the study sites, and as a consequence of the low quality wastewater used, a relevant increase in soil organic matter content was observed, as well as modifications in most of the soil properties. The application of soil quality indices indicated that all the soils of study sites are in a state of disequilibrium regarding the relationships between properties independent of the type of water used. However, there were no relevant differences in the soil quality indices between soils irrigated with wastewater with respect to their control sites for all except one of the sites, which corresponds to the site where low quality wastewater was used.

  11. Unmanned Aerial Vehicle (UAV) operated spectral camera system for forest and agriculture applications

    NASA Astrophysics Data System (ADS)

    Saari, Heikki; Pellikka, Ismo; Pesonen, Liisa; Tuominen, Sakari; Heikkilä, Jan; Holmlund, Christer; Mäkynen, Jussi; Ojala, Kai; Antila, Tapani

    2011-11-01

    VTT Technical Research Centre of Finland has developed a Fabry-Perot Interferometer (FPI) based hyperspectral imager compatible with the light weight UAV platforms. The concept of the hyperspectral imager has been published in the SPIE Proc. 7474 and 7668. In forest and agriculture applications the recording of multispectral images at a few wavelength bands is in most cases adequate. The possibility to calculate a digital elevation model of the forest area and crop fields provides means to estimate the biomass and perform forest inventory. The full UAS multispectral imaging system will consist of a high resolution false color imager and a FPI based hyperspectral imager which can be used at resolutions from VGA (480 x 640 pixels) up to 5 Mpix at wavelength range 500 - 900 nm at user selectable spectral resolutions in the range 10...40 nm @ FWHM. The resolution is determined by the order at which the Fabry- Perot interferometer is used. The overlap between successive images of the false color camera is 70...80% which makes it possible to calculate the digital elevation model of the target area. The field of view of the false color camera is typically 80 degrees and the ground pixel size at 150 m flying altitude is around 5 cm. The field of view of the hyperspectral imager is presently is 26 x 36 degrees and ground pixel size at 150 m flying altitude is around 3.5 cm. The UAS system has been tried in summer 2011 in Southern Finland for the forest and agricultural areas. During the first test campaigns the false color camera and hyperspectral imager were flown over the target areas at separate flights. The design and calibration of the hyperspectral imager will be shortly explained. The test flight campaigns on forest and crop fields and their preliminary results are also presented in this paper.

  12. Application of soil quality indices to assess the status of agricultural soils irrigated with treated wastewaters

    NASA Astrophysics Data System (ADS)

    Morugán-Coronado, A.; Arcenegui, V.; García-Orenes, F.; Mataix-Solera, J.; Mataix-Beneyto, J.

    2013-03-01

    The supply of water is limited in some parts of the Mediterranean region, such as southeastern Spain. The use of treated wastewater for the irrigation of agricultural soils is an alternative to using better-quality water, especially in semi-arid regions. On the other hand, this practice can modify some soil properties, change their relationships and influence soil quality. In this work two soil quality indices were used to evaluate the effects of irrigation with treated wastewater in soils. The indices were developed studying different soil properties in undisturbed soils in SE Spain, and the relationships between soil parameters were established using multiple linear regressions. These indices represent the balance reached among properties in "steady state" soils. This study was carried out in four study sites from SE Spain irrigated with wastewater, including four study sites. The results showed slight changes in some soil properties as a consequence of irrigation with wastewater, the obtained levels not being dangerous for agricultural soils, and in some cases they could be considered as positive from an agronomical point of view. In one of the study sites, and as a consequence of the low quality wastewater used, a relevant increase in soil organic matter content was observed, as well as modifications in most of the soil properties. The application of soil quality indices indicated that all the soils of study sites are in a state of disequilibrium regarding the relationships between properties independent of the type of water used. However, there were no relevant differences in the soil quality indices between soils irrigated with wastewater with respect to their control sites for all except one of the sites, which corresponds to the site where low quality wastewater was used.

  13. Single application of Sewage Sludge to an Alluvial Agricultural Soil - impacts on Soil Quality

    NASA Astrophysics Data System (ADS)

    Suhadolc, M.; Graham, D. B.; Hagn, A.; Doerfler, U.; Schloter, M.; Schroll, R.; Munch, J. C.; Lobnik, F.

    2009-04-01

    Limited information exists on the effects of sewage sludge on soil quality with regard to their ability to maintain soil functions. We studied effects of sewage sludge amendment on soil chemical properties, microbial community structure and microbial degradation of the herbicide glyphosate. Three months soil column leaching experiment has been conducted using alluvial soils (Eutric Fluvisol) with no prior history of sludge application. The soil was loamy with pH 7,4 and organic matter content of 3,5%. Soil material in the upper 2 cm of columns was mixed with dehydrated sewage sludge which was applied in amounts corresponding to the standards governing the use of sewage sludge for agricultural land. Sludge did increase some nutrients (total N, NH4+, available P and K, organic carbon) and some heavy metals contents (Zn, Cu, Pb) in soil. However, upper limits for heavy metals in agricultural soils were not exceeded. Results of heavy metal availability in soil determined by sequential extraction will be also presented. Restriction fragment length polymorphism (RFLP) analyses of 16s/18s rDNA, using universal fungal and bacterial primers, revealed clear shifts in bacterial and fungal community structure in the upper 2 cm of soils after amendment. Fungal fingerprints showed greater short term effects of sewage sludge, whereas sewage sludge seems to have prolonged effects on soil bacteria. Furthermore, sewage sludge amendment significantly increased glyphosate degradation from 21.6±1% to 33.6±1% over a 2 months period. The most probable reasons for shifts in microbial community structure and increased degradation of glyphosate are beneficial alterations to the physical-chemical characteristics of the soil. Negative effects of potentially toxic substances present in the sewage sludge on soil microbial community functioning were not observed with the methods used in our study.

  14. Nanotechnologies in agriculture and food - an overview of different fields of application, risk assessment and public perception.

    PubMed

    Grobe, Antje; Rissanen, Mikko E

    2012-12-01

    Nanomaterials in agriculture and food are key issues of public and regulatory interest. Over the past ten years, patents for nanotechnological applications in the field of food and agriculture have become abundant. Uncertainty prevails however regarding their current development status and presence in the consumer market. Thus, the discussion on nanotechnologies in the food sector with its specific public perception of benefits and risks and the patterns of communication are becoming similar to the debate on genetically modified organisms. The food industry's silence in communication increased mistrust of consumer organisations and policy makers. The article discusses the background of the current regulatory debates, starting with the EU recommendation for defining nanomaterials, provides an overview of possible fields of application in agriculture and food industries and discusses risk assessment and the public debate on benefits and risks. Communicative recommendations are directed at researchers, the food industry and regulators in order to increase trust both in stakeholders, risk management and regulatory processes. PMID:23013411

  15. Ecological risks associated with the application of sewage sludge to non-agricultural ecosystems

    SciTech Connect

    Efroymson, R.A.; Sample, B.E.; Luxmoore, R.J.; Tharp, M.L.; Barnthouse, L.W.; Daniel, F.B.

    1995-12-31

    The Clean Water Act of 1977 directed EPA to establish standards for use and disposal of sewage sludge (biosolids). The application of biosolids to non-agricultural lands is becoming increasingly important as a method of waste disposal. Ecological endpoints at the population, community, and/or ecosystem level have not previously been emphasized in the development of regulatory standards for municipal sewage sludge. This risk assessment focuses on terrestrial endpoints in four ecosystem types to which substantial quantities of sludge have been applied or are expected to be applied in the future: northwest Douglas-fir forest, southeastern loblolly pine plantation, eastern deciduous forest, and semi-arid rangeland. Conceptual models suitable for all ecosystems were developed that depict the links among assessment endpoints. Estimates of risks to wildlife from contaminants and simulations of impacts of nitrogen in sewage sludge on the structure and function of forest communities are presented in detail elsewhere at this conference. This project overview integrates these two assessment components and adds contaminant risks to plants, soil invertebrates, and microbial processes and risk of leaching and erosion altered by biosolids application. Management practices and empirical measures of bioavailability are considered for each ecosystem. Concentrations of constitutents of sewage sludge used for the analyses have been obtained from the 1988 USEPA National Sewage Sludge Survey. Existing regulatory standards that are primarily human health-based are also evaluated for the adequacy of protection of ecological systems and populations. Predicted impacts of sewage sludge applications are presented, even if they may be regarded as benefits rather than risks.

  16. Neurobehavioral function and organophosphate insecticide use among pesticide applicators in the Agricultural Health Study.

    PubMed

    Starks, Sarah E; Gerr, Fred; Kamel, Freya; Lynch, Charles F; Jones, Michael P; Alavanja, Michael C; Sandler, Dale P; Hoppin, Jane A

    2012-01-01

    Although persistent decrements in cognitive function have been observed among persons who have recovered from clinically overt organophosphate (OP) pesticide poisoning, little is known about the cognitive effects of chronic OP exposures that do not result in acute poisoning. To examine associations between long-term pesticide use and neurobehavioral (NB) function, NB tests were administered to licensed pesticide applicators enrolled in the Agricultural Health Study (AHS) in Iowa and North Carolina. Between 2006 and 2008, 701 male participants completed nine NB tests to assess memory, motor speed and coordination, sustained attention, verbal learning and visual scanning and processing. Data on ever-use and lifetime days of use of 16 OP pesticides were obtained from AHS interviews conducted before testing between 1993 and 2007 and during the NB visit. The mean age of participants was 61 years (SD=12). Associations between pesticide use and NB test performance were estimated with linear regression controlling for age and outcome-specific covariates. NB test performance was associated with lifetime days of use of some pesticides. Ethoprop was significantly associated with reduced performance on a test of motor speed and visual scanning. Malathion was significantly associated with poor performance on a test of visual scanning and processing. Conversely, we observed significantly better test performance for five OP pesticides. Specifically, chlorpyrifos, coumaphos, parathion, phorate, and tetrachlorvinphos were associated with better verbal learning and memory; coumaphos was associated with better performance on a test of motor speed and visual scanning; and parathion was associated with better performance on a test of sustained attention. Several associations varied by state. Overall, we found no consistent evidence of an association between OP pesticide use and adverse NB test performance among this older sample of pesticide applicators. Potential reasons for these

  17. Selected veterinary pharmaceuticals in agricultural water and soil from land application of animal manure.

    PubMed

    Song, Wenlu; Ding, Yunjie; Chiou, Cary T; Li, Hui

    2010-01-01

    Veterinary pharmaceuticals are commonly administered to animals for disease control, and added into feeds at subtherapeutic levels to improve feeding efficiency. As a result of these practices, a certain fraction of the pharmaceuticals are excreted into animal manures. Land application of these manures contaminates soils with the veterinary pharmaceuticals, which can subsequently lead to contamination of surface and groundwaters. Information on the occurrence and fate of pharmaceuticals in soil and water is needed to assess the potential for exposure of at-risk populations and the impacts on agricultural ecosystems. In this study, we investigated the occurrence and fate of four commonly used veterinary pharmaceuticals (amprolium, carbadox, monensin, and tylosin) in a farm in Michigan. Amprolium and monensin were frequently detected in nearby surface water, with concentrations ranging from several to hundreds of nanograms per liter, whereas tylosin or carbadox was rarely found. These pharmaceuticals were more frequently detected in surface runoff during nongrowing season (October to April) than during growing season (May to September). Pharmaceuticals resulting from postharvest manure application appeared to be more persistent than those from spring application. High concentrations of pharmaceuticals in soils were generally observed at the sites where the respective concentrations in surface water were also high. For monensin, the ratios of soil-sorbed to aqueous concentrations obtained from field samples were within the order of the distribution coefficients obtained from laboratory studies. These results suggest that soil is a reservoir for veterinary pharmaceuticals that can be disseminated to nearby surface water via desorption from soil, surface runoff, and soil erosion. PMID:20830908

  18. Hearing Loss among Licensed Pesticide Applicators in the Agricultural Health Study Running title: Hearing Loss among Licensed Pesticide Applicators

    PubMed Central

    Mac Crawford, J.; Hoppin, Jane A.; Alavanja, Michael C. R.; Blair, Aaron; Sandler, Dale P.; Kamel, Freya

    2009-01-01

    Objective We evaluated self-reported hearing loss and pesticide exposure in licensed private pesticide applicators enrolled in the Agricultural Health Study in 1993–1997 in Iowa and North Carolina. Methods Among 14,229 white male applicators in 1999–2003, 4,926 reported hearing loss (35%). Logistic regression was performed with adjustment for state, age, and noise, solvents, and metals. We classified pesticides by lifetime days of use. Results Compared to no exposure, the odds ratio (95% confidence interval) for the highest quartile of exposure was 1.19 (1.04–1.35) for insecticides and 1.17 (1.03–1.31) for organophosphate insecticides. Odds of hearing loss were elevated for high pesticide exposure events (1.38, 1.25–1.54), pesticide-related doctor visits (1.38, 1.17–1.62) or hospitalization (1.81, 1.25–2.62), and diagnosed pesticide poisoning (1.75, 1.36–2.26). Conclusions Although control for exposure to noise or other neurotoxicants was limited, this study extends previous reports suggesting that organophosphate exposure increases risk of hearing loss. PMID:18617838

  19. Assessing the fate of an aromatic hydrocarbon fluid in agricultural spray applications using the three-stage ADVOCATE model framework

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Components of emulsifiable concentrates (ECs) used in pesticide formulations may be emitted to air following application in agricultural use and contribute to ozone formation. A key consideration is the fraction of the ECs that is volatilized. This study is designed to provide a mechanistic model fr...

  20. Process heat in California: Applications and potential for solar energy in the industrial, agricultural and commercial sectors

    NASA Technical Reports Server (NTRS)

    Barbieri, R. H.; Bartera, R. E.; Davis, E. S.; Hlavka, G. E.; Pivirotto, D. S.; Yanow, G.

    1978-01-01

    A summary of the results of a survey of potential applications of solar energy for supplying process heat requirements in the industrial, agricultural, and commercial sectors of California is presented. Technical, economic, and institutional characteristics of the three sectors are examined. Specific applications for solar energy are then discussed. Finally, implications for California energy policy are discussed along with recommendations for possible actions by the State of California.

  1. An Examination of Important Competencies Necessary for Vocational Agriculture in Selected Senior Secondary Students in Ijebu North Local Government Area, Nigeria

    ERIC Educational Resources Information Center

    Onanuga, Peter Abayomi

    2015-01-01

    The study analyses the relationship existing between some specified competencies important to vocational agriculture and preparation for occupation between male and female students in senior secondary schools in Ijebu-North Local Government Area, Nigeria. It adopted the classical design for change experiment (i.e. before and after measures) with…

  2. The Impact of Micro-Teaching on the Teaching Practice Performance of Undergraduate Agricultural Education Students in College of Education, Azare

    ERIC Educational Resources Information Center

    Sa'ad, Tata Umar; Sabo, Shehu; Abdullahi, Aliyu Dahuwa

    2015-01-01

    Micro-teaching and teaching practices are two integral parts of teacher education programme. Therefore, this study investigated the impact of micro-teaching on the teaching practice of the undergraduate Agricultural Education Students admitted in 2012/2013 Academic session in College of Education, Azare, Bauchi State, Nigeria. The 400 level…

  3. Quality, Evolution, and Positional Change of University Students' Argumentation Patterns about Organic Agriculture during an Argument-Critique-Argument Experience

    ERIC Educational Resources Information Center

    Yu, Shu-Mey; Yore, Larry D.

    2013-01-01

    The purpose of this study was to investigate the quality, evolution, and position of university students' argumentation about organic agriculture over a 4-week argument-critique-argument e-learning experience embedded in a first year university biology course. The participants (N = 43) were classified into three groups based on their…

  4. Incorporating Learning Objects in a Curriculum Re-Design to Meet Needs of Students with Specific Learning Disabilities in Illinois Agricultural Education Programs

    ERIC Educational Resources Information Center

    Pense, Seburn L.; Calvin, Jennifer; Watson, Dennis G.; Wakefield, Dexter B.

    2012-01-01

    A quasi-experimental pilot study of curriculum re-design using Learning Objects (LO) to instruct agricultural education students with Specific Learning Disabilities (SLD) was conducted in five high schools in the federally designated economically distressed area, the Illinois Delta Region. Six LOs were developed based on a unit of instruction in…

  5. HYDRAULIC POWER TRANSFER SYSTEMS. AGRICULTURAL MACHINERY--SERVICE OCCUPATIONS, MODULE NUMBER 9.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. Center for Vocational and Technical Education.

    ONE OF A SERIES DESIGNED TO HELP TEACHERS PREPARE POSTSECONDARY-LEVEL STUDENTS FOR THE AGRICULTURAL MACHINERY SERVICE OCCUPATIONS AS PARTS MEN, MECHANICS, MECHANIC'S HELPERS, AND SERVICE SUPERVISORS, THIS GUIDE AIMS TO DEVELOP STUDENT COMPETENCY IN UNDERSTANDING BASIC HYDRAULICS AND ITS APPLICATION TO AGRICULTURAL MACHINERY. IT WAS DEVELOPED BY A…

  6. Attitudes, Application, Action: Employability Skills for the Adult Literacy Student.

    ERIC Educational Resources Information Center

    Darling, Sharon; And Others

    This instructor's guide, one in a series of works dealing with adult literacy education, consists of materials for use in helping adult literacy students to develop employability skills. Addressed in the individual sections of the guide are assessing job skills, attitudes, resumes and job applications; job interviews; keeping a job; and…

  7. Potato pulp: microbiological characterization, physical modification, and application of this agricultural waste product.

    PubMed

    Mayer, F; Hillebrandt, J O

    1997-10-01

    Potato pulp, one of the agricultural waste products obtained in high quantities during starch production, contains starch, cellulose, hemicelluloses, pectin, proteins, free amino acids and salts. It exhibits physical and physicochemical properties of a typical colloid. It is mainly used, in a dried and pelleted form, as cattle feed. Its autochthonic microbial flora (bacteria, fungi) was identified and studied with a view towards the degradative potential of the microorganisms and ways of conserving the pulp for subsequent technical applications; 33 isolates (28 bacteria, 4 fungi, 1 yeast), belonging to 15 genera were characterized. Biological conservation was possible at very low oxygen pressure, brought about by the autochthonic anaerobic microorganisms causing acidification. Chemical conservation was achieved with sorbic acid. By treatment with hot water vapour under pressure (autoclaving), followed by a pressure release procedure, intact cells in the pulp (both potato cells and microorganisms, not spores) were destroyed, and their contents and wall fragments were set free. This process resulted in low drying costs and was a prerequisite for the production of a powder that can be used as glue or as animal feed. PMID:9390450

  8. Quantitative Assessment of Agricultural Runoff and Soil Erosion Using Mathematical Modeling: Applications in the Mediterranean Region

    NASA Astrophysics Data System (ADS)

    Arhonditsis, G.; Giourga, C.; Loumou, A.; Koulouri, M.

    2002-09-01

    Three mathematical models, the runoff curve number equation, the universal soil loss equation, and the mass response functions, were evaluated for predicting nonpoint source nutrient loading from agricultural watersheds of the Mediterranean region. These methodologies were applied to a catchment, the gulf of Gera Basin, that is a typical terrestrial ecosystem of the islands of the Aegean archipelago. The calibration of the model parameters was based on data from experimental plots from which edge-of-field losses of sediment, water runoff, and nutrients were measured. Special emphasis was given to the transport of dissolved and solid-phase nutrients from their sources in the farmers' fields to the outlet of the watershed in order to estimate respective attenuation rates. It was found that nonpoint nutrient loading due to surface losses was high during winter, the contribution being between 50% and 80% of the total annual nutrient losses from the terrestrial ecosystem. The good fit between simulated and experimental data supports the view that these modeling procedures should be considered as reliable and effective methodological tools in Mediterranean areas for evaluating potential control measures, such as management practices for soil and water conservation and changes in land uses, aimed at diminishing soil loss and nutrient delivery to surface waters. Furthermore, the modifications of the general mathematical formulations and the experimental values of the model parameters provided by the study can be used in further application of these methodologies in watersheds with similar characteristics.

  9. Fate of Ag-NPs in Sewage Sludge after Application on Agricultural Soils.

    PubMed

    Pradas del Real, Ana E; Castillo-Michel, Hiram; Kaegi, Ralf; Sinnet, Brian; Magnin, Valérie; Findling, Nathaniel; Villanova, Julie; Carrière, Marie; Santaella, Catherine; Fernández-Martínez, Alejandro; Levard, Clément; Sarret, Géraldine

    2016-02-16

    The objective of this work was to investigate the fate of silver nanoparticles (Ag-NPs) in a sludge-amended soil cultivated with monocot (Wheat) and dicot (Rape) crop species. A pot experiment was performed with sludges produced in a pilot wastewater treatment plant containing realistic Ag concentrations (18 and 400 mg kg(-1), 14 mg kg(-1) for the control). Investigations focused on the highest dose treatment. X-ray absorption spectroscopy (XAS) showed that Ag2S was the main species in the sludge and amended soil before and after plant culture. The second most abundant species was an organic and/or amorphous Ag-S phase whose proportion slightly varied (from 24% to 36%) depending on the conditions. Micro and nano X-ray fluorescence (XRF) showed that Ag was preferentially associated with S-rich particles, including organic fragments, of the sludge and amended soils. Ag was distributed as heteroaggregates with soil components (size ranging from ≤0.5 to 1-3 μm) and as diffused zones likely corresponding to sorbed/complexed Ag species. Nano-XRF evidenced the presence of mixed metallic sulfides. Ag was weakly exchangeable and labile. However, micronutrient mobilization by plant roots and organic matter turnover may induce Ag species interconversion eventually leading to Ag release on longer time scales. Together, these data provide valuable information for risk assessment of sewage sludge application on agricultural soils. PMID:26756906

  10. A review of wireless sensor technologies and applications in agriculture and food industry: state of the art and current trends.

    PubMed

    Ruiz-Garcia, Luis; Lunadei, Loredana; Barreiro, Pilar; Robla, Jose Ignacio

    2009-01-01

    The aim of the present paper is to review the technical and scientific state of the art of wireless sensor technologies and standards for wireless communications in the Agri-Food sector. These technologies are very promising in several fields such as environmental monitoring, precision agriculture, cold chain control or traceability. The paper focuses on WSN (Wireless Sensor Networks) and RFID (Radio Frequency Identification), presenting the different systems available, recent developments and examples of applications, including ZigBee based WSN and passive, semi-passive and active RFID. Future trends of wireless communications in agriculture and food industry are also discussed. PMID:22408551

  11. A Review of Wireless Sensor Technologies and Applications in Agriculture and Food Industry: State of the Art and Current Trends

    PubMed Central

    Ruiz-Garcia, Luis; Lunadei, Loredana; Barreiro, Pilar; Robla, Jose Ignacio

    2009-01-01

    The aim of the present paper is to review the technical and scientific state of the art of wireless sensor technologies and standards for wireless communications in the Agri-Food sector. These technologies are very promising in several fields such as environmental monitoring, precision agriculture, cold chain control or traceability. The paper focuses on WSN (Wireless Sensor Networks) and RFID (Radio Frequency Identification), presenting the different systems available, recent developments and examples of applications, including ZigBee based WSN and passive, semi-passive and active RFID. Future trends of wireless communications in agriculture and food industry are also discussed. PMID:22408551

  12. Depression and Pesticide Exposures among Private Pesticide Applicators Enrolled in the Agricultural Health Study

    PubMed Central

    Beseler, Cheryl L.; Stallones, Lorann; Hoppin, Jane A.; Alavanja, Michael C.R.; Blair, Aaron; Keefe, Thomas; Kamel, Freya

    2008-01-01

    Background We evaluated the relationship between diagnosed depression and pesticide exposure using information from private pesticide applicators enrolled in the Agricultural Health Study between 1993 and 1997 in Iowa and North Carolina. Methods There were 534 cases who self-reported a physician-diagnosed depression and 17,051 controls who reported never having been diagnosed with depression and did not feel depressed more than once a week in the past year. Lifetime pesticide exposure was categorized in three mutually exclusive groups: low (< 226 days, the reference group), intermediate (226–752 days), and high (> 752 days). Two additional measures represented acute high-intensity pesticide exposures: an unusually high pesticide exposure event (HPEE) and physician-diagnosed pesticide poisoning. Logistic regression analyses were performed relating pesticide exposure to depression. Results After adjusting for state, age, education, marital status, doctor visits, alcohol use, smoking, solvent exposure, not currently having crops or animals, and ever working a job off the farm, pesticide poisoning was more strongly associated with depression [odds ratio (OR) = 2.57; 95% confidence interval (CI), 1.74–3.79] than intermediate (OR = 1.07; 95% CI, 0.87–1.31) or high (OR = 1.11; 95% CI, 0.87–1.42) cumulative exposure or an HPEE (OR = 1.65; 95% CI, 1.33–2.05). In analysis of a subgroup without a history of acute poisoning, high cumulative exposure was significantly associated with depression (OR = 1.54; 95% CI, 1.16–2.04). Conclusion These findings suggest that both acute high-intensity and cumulative pesticide exposure may contribute to depression in pesticide applicators. Our study is unique in reporting that depression is also associated with chronic pesticide exposure in the absence of a physician-diagnosed poisoning. PMID:19079725

  13. Atrazine and Cancer Incidence Among Pesticide Applicators in the Agricultural Health Study (1994–2007)

    PubMed Central

    Rusiecki, Jennifer A.; Hoppin, Jane A.; Lubin, Jay H.; Koutros, Stella; Andreotti, Gabriella; Zahm, Shelia Hoar; Hines, Cynthia J.; Coble, Joseph B.; Barone-Adesi, Francesco; Sloan, Jennifer; Sandler, Dale P.; Blair, Aaron; Alavanja, Michael C.R.

    2011-01-01

    Background: Atrazine is a triazine herbicide used widely in the United States. Although it is an animal carcinogen, the mechanism in rodents does not appear to operate in humans. Few epidemiologic studies have provided evidence for an association. Methods: The Agricultural Health Study (AHS) is a prospective cohort that includes 57,310 licensed pesticide applicators. In this report, we extend a previous AHS analysis of cancer risk associated with self-reported atrazine use with six additional years of follow-up and more than twice as many cancer cases. Using Poisson regression, we calculated relative risk estimates and 95% confidence intervals for lifetime use of atrazine and intensity-weighted lifetime days, which accounts for factors that impact exposure. Results: Overall, 36,357 (68%) of applicators reported using atrazine, among whom there were 3,146 cancer cases. There was no increase among atrazine users in overall cancer risk or at most cancer sites in the higher exposure categories compared with the lowest. Based on 29 exposed cases of thyroid cancer, there was a statistically significant risk in the second and fourth quartiles of intensity-weighted lifetime days. There was a similar pattern for lifetime days, but neither the risk estimates nor the trend were statistically significant and for neither metric was the trend monotonic. Conclusions: Overall, there was no consistent evidence of an association between atrazine use and any cancer site. There was a suggestion of increased risk of thyroid cancer, but these results are based on relatively small numbers and minimal supporting evidence. PMID:21622085

  14. Estimation of soil water content for engineering and agricultural applications using ground penetrating radar

    NASA Astrophysics Data System (ADS)

    Grote, Katherine Rose

    2003-10-01

    Near-surface water content is important for a variety of applications in engineering, agriculture, ecology, and environmental monitoring and is an essential input parameter for hydrological and atmospheric models. Water content is both spatially and temporally variable and is difficult to characterize using conventional measurement techniques, which are invasive, time-consuming to collect, and provide only a limited number of point measurements. The purpose of this study is to investigate ground penetrating radar (GPR) techniques for improved estimation of water content. GPR techniques have potential for providing accurate, high-resolution estimates of water content quickly and non-invasively, but the efficacy of these techniques for field-scale applications has not been previously determined. This study begins with a literature review of the application of GPR techniques for water content estimation, followed by a description of the principles employed in GPR surveying and the general methodology for converting electromagnetic GPR measurements to water content estimates. Next, a pilot experiment using GPR techniques for water content estimation is described; this experiment was performed under very controlled conditions and used common-offset GPR reflections to estimate the water content in sandy test pits. This experiment showed that GPR techniques can estimate water content very accurately (within 0.017 cm3/cm3 of the volumetric water content estimates obtained gravimetrically) and provided motivation for the second, less-controlled experiment. The second study used common-offset GPR reflections to estimate water content in a transportation engineering application, where the GPR data were used to monitor the water content in sub-asphalt aggregate layers and to estimate deformation under dynamic loading. This experiment showed that GPR data could be used to accurately monitor changes in the horizontal and vertical distributions of sub-asphalt water content with

  15. 40 CFR 455.60 - Applicability; description of repackaging of agricultural pesticides performed by refilling...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... or custom blending, as defined in 40 CFR 167.3. (c) The provisions of this subpart do not apply to... repackaging of agricultural pesticides performed by refilling establishments subcategory. 455.60 Section 455... STANDARDS (CONTINUED) PESTICIDE CHEMICALS Repackaging of Agricultural Pesticides Performed at...

  16. 40 CFR 455.60 - Applicability; description of repackaging of agricultural pesticides performed by refilling...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... or custom blending, as defined in 40 CFR 167.3. (c) The provisions of this subpart do not apply to... repackaging of agricultural pesticides performed by refilling establishments subcategory. 455.60 Section 455... STANDARDS (CONTINUED) PESTICIDE CHEMICALS Repackaging of Agricultural Pesticides Performed at...

  17. 40 CFR 455.60 - Applicability; description of repackaging of agricultural pesticides performed by refilling...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... or custom blending, as defined in 40 CFR 167.3. (c) The provisions of this subpart do not apply to... repackaging of agricultural pesticides performed by refilling establishments subcategory. 455.60 Section 455... STANDARDS (CONTINUED) PESTICIDE CHEMICALS Repackaging of Agricultural Pesticides Performed at...

  18. 40 CFR 455.60 - Applicability; description of repackaging of agricultural pesticides performed by refilling...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... defined in 40 CFR 167.3. (c) The provisions of this subpart do not apply to wastewater discharges from... repackaging of agricultural pesticides performed by refilling establishments subcategory. 455.60 Section 455... STANDARDS PESTICIDE CHEMICALS Repackaging of Agricultural Pesticides Performed at Refilling...

  19. 40 CFR 455.60 - Applicability; description of repackaging of agricultural pesticides performed by refilling...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... defined in 40 CFR 167.3. (c) The provisions of this subpart do not apply to wastewater discharges from... repackaging of agricultural pesticides performed by refilling establishments subcategory. 455.60 Section 455... STANDARDS PESTICIDE CHEMICALS Repackaging of Agricultural Pesticides Performed at Refilling...

  20. An application of artificial neural networks to the prediction of agricultural losses during typhoon periods

    NASA Astrophysics Data System (ADS)

    Chiang, Y.; Cheng, W.; Chang, F.

    2009-12-01

    Taiwan is located within the subtropical area and the main typhoon track of the Northwestern Pacific Ocean where typhoons form frequently. On average, typhoons hit the island more than three times per year. The yearly agricultural losses caused by typhoons are about US$ 250 millions Due to the supply and demand of agricultural products and their prices are highly affected by the climate, the goal of this study is to investigate the influence of typhoons on the agricultural losses. Nevertheless, the characteristic of typhoon includes uncertainty, complexity and nonlinearity which result in the difficulty in the establishment of models. In order to overcome above-mentioned difficulties, two types of artificial neural network (ANN): backpropagation neural network and self-organizing feature map network are applied in this study to simulate the nonlinear weather system and to estimate the agricultural losses. First, different meteorological variables are analyzed to find out their relation to agricultural losses and then important variables are selected as model inputs for predicting the event-based agricultural losses. Our preliminary results show that the ANN is capable of constructing reliable agricultural loss prediction. The results are also expected to assess the level of damage to agriculture and to provide the information for decision support.

  1. Handbook of Agricultural Geophysics

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Geophysical methods continue to show great promise for use in agriculture. The term “agricultural geophysics” denotes a subdiscipline of geophysics that is focused only on agricultural applications. The Handbook of Agricultural Geophysics was compiled to include a comprehensive overview of the geoph...

  2. CdTe and CdSe quantum dots: synthesis, characterizations and applications in agriculture

    NASA Astrophysics Data System (ADS)

    Dieu Thuy Ung, Thi; Tran, Thi Kim Chi; Nga Pham, Thu; Nghia Nguyen, Duc; Khang Dinh, Duy; Liem Nguyen, Quang

    2012-12-01

    This paper highlights the results of the whole work including the synthesis of highly luminescent quantum dots (QDs), characterizations and testing applications of them in different kinds of sensors. Concretely, it presents: (i) the successful synthesis of colloidal CdTe and CdSe QDs, their core/shell structures with single- and/or double-shell made by CdS, ZnS or ZnSe/ZnS; (ii) morphology, structural and optical characterizations of the synthesized QDs; and (iii) testing examples of QDs as the fluorescence labels for agricultural-bio-medical objects (for tracing residual pesticide in agricultural products, residual clenbuterol in meat/milk and for detection of H5N1 avian influenza virus in breeding farms). Overall, the results show that the synthesized QDs have very good crystallinity, spherical shape and strongly emit at the desired wavelengths between ∼500 and 700 nm with the luminescence quantum yield (LQY) of 30–85%. These synthesized QDs were used in fabrication of the three testing fluorescence QD-based sensors for the detection of residual pesticides, clenbuterol and H5N1 avian influenza virus. The specific detection of parathion methyl (PM) pesticide at a content as low as 0.05 ppm has been realized with the biosensors made from CdTe/CdS and CdSe/ZnSe/ZnS QDs and the acetylcholinesterase (AChE) enzymes. Fluorescence resonance energy transfer (FRET)-based nanosensors using CdTe/CdS QDs conjugated with 2-amino-8-naphthol-6-sulfonic acid were fabricated that enable detection of diazotized clenbuterol at a content as low as 10 pg ml‑1. For detection of H5N1 avian influenza virus, fluorescence biosensors using CdTe/CdS QDs bound on the surface of chromatophores extracted and purified from bacteria Rhodospirillum rubrum were prepared and characterized. The specific detection of H5N1 avian influenza virus in the range of 3–50 ng μl‑1 with a detection limit of 3 ng μL‑1 has been performed based on the antibody-antigen recognition.

  3. URINARY LEVELS OF 2,4-D AND 3,5,6-TRICHLORO-2-PYRIDINOL FOR SPOUSES AND CHILDREN OF PESTICIDE APPLICATORS IN THE AGRICULTURAL HEALTH STUDY

    EPA Science Inventory

    The Agricultural Health Study (AHS) is a prospective epidemiologic study of pesticide applicators and their spouses in Iowa and North Carolina. Exposure to targeted pesticides, 2,4-D or chlorpyrifos, was measured in conjunction with agricultural applications for a subset of appl...

  4. The utility of ERTS-1 data for applications in agriculture and forestry. [Montana, Nebraska, Iowa, Georgia, California, and Texas

    NASA Technical Reports Server (NTRS)

    Erb, R. B.

    1974-01-01

    A comprehensive study has been undertaken to determine the extent to which ERTS-1 data could be used to detect, identify (classify), locate and measure features of applications interest in the disciplines of Agriculture and Forestry. The study areas included: six counties in five states in which were located examples of the most important crops and practices of American agriculture; and a portion of the Sam Houston National Forest, a typical Gulf coastal plain pine forest. The investigation utilized conventional image interpretation and computer-aided (spectral pattern recognition) analysis using both image products and computer compatible tapes. The emphasis was generally upon the computer-aided techniques. It was concluded that ERTS-1 data can be used to detect, identify, locate and measure a wide array of features of interest in agriculture and forestry.

  5. Pre-Veterinary Students in Agriculture at Southern Land-Grant Universities. Journal Series No. 1-810012 of the Alabama Agricultural Experiment Station.

    ERIC Educational Resources Information Center

    Dunkelberger, John E.; And Others

    Because the number of students seeking admission to colleges of veterinary medicine exceeds the number that can be admitted, and because the changes that characterize veterinary students today have important implications for veterinary educators and administrators, this study focused on characteristics of undergraduate pre-veterinary students…

  6. Twitter: An Application to Encourage Information Seeking Among Nursing Students.

    PubMed

    Waldrop, Julee; Wink, Diane

    2016-01-01

    Twitter is a social networking application that has seen limited evaluation in nursing education. The aim of this study was to determine if Twitter could be used to stimulate further exploration about current clinical and professional topics with nurse practitioner students. The students used Twitter to receive tweets on clinical and professional topics from the instructor throughout the semester: 75% demonstrated willingness to follow the links in the tweets to seek more information, and 87% expressed a desire to receive the tweets even after the semester was over. PMID:26673316

  7. Youth Organization and Supervised Agricultural Experience Participation as Predictors of the Career Maturity of Agricultural Education Students. Summary of Research 72.

    ERIC Educational Resources Information Center

    Bakar, Ab. Rahim; McCracken, J. David

    A study examined relationships between career maturity and participation in the Future Farmers of America (FFA) and between career maturity and participation in supervised agricultural experience (SAE). The primary hypothesis was that career maturity is positively related to participation in FFA and SAE. A cluster random sample was used with the…

  8. A summary of the history of the development of automated remote sensing for agricultural applications

    NASA Technical Reports Server (NTRS)

    Macdonald, R. B.

    1984-01-01

    An historical account is given of the development of technology for the processing of satellite-acquired multispectral data aimed at the identification of the type, condition, and ontogenic stages of agricultural areas. During 1972 and 1973, research established the feasibility of automating digital classification for the processing of large volumes of Landsat MSS data. This capability was successfully demonstrated during the Large Area Crop Inventory Experiment, which estimated wheat crop production on a global basis. This achievement in turn led to the Agriculture and Resources Inventory Surveys Through Aerospace Remote Sensing, which investigated other portions of the electromagnetic spectrum and expanded the study of key commercial crops in important agricultural areas.

  9. Student perceptions of secondary science: A performance technology application

    NASA Astrophysics Data System (ADS)

    Small, Belinda Rusnak

    The primary purpose of this study was to identify influences blocking or promoting science performance from the lived K-12 classroom experience. Human Performance Technology protocols were used to understand factors promoting or hindering science performance. The goal was to gain information from the individual students' perspective to enhance opportunities for stakeholders to improve the current state of performance in science education. Individual perspectives of 10 secondary science students were examined using grounded theory protocols. Findings include students' science learning behaviors are influenced by two major themes, environmental supports and individual learning behaviors. The three environmental support factors identified include the methods students receive instruction, students' opportunities to access informal help apart from formal instruction, and students' feelings of teacher likability. Additionally, findings include three major factors causing individual learners to generate knowledge in science. Factors reported include personalizing information to transform data into knowledge, customizing learning opportunities to maximize peak performance, and tapping motivational opportunities to persevere through complex concepts. The emergent theory postulated is that if a performance problem exists in an educational setting, then integrating student perspectives into the cause analysis opens opportunity to align interventions for influencing student performance outcomes. An adapted version of Gilbert's Behavioral Engineering Model is presented as an organizational tool to display the findings. The boundaries of this Performance Technology application do not extend to the identification, selection, design, or implementation of solutions to improved science performance. However, as stakeholders begin to understand learner perspectives then aligned decisions may be created to support learners of science in a direct, cost effective manner.

  10. Student use and pedagogical impact of a mobile learning application.

    PubMed

    Teri, Saskia; Acai, Anita; Griffith, Douglas; Mahmoud, Qusay; Ma, David W L; Newton, Genevieve

    2014-01-01

    Mobile learning (m-learning) is a relevant innovation in teaching and learning in higher education. A mobile app called NutriBiochem was developed for use in biochemistry and nutrition education for students in a second year Biochemistry and Metabolism course. NutriBiochem was accessed through smartphones, tablets, or computers. Students were surveyed upon completion of the final exam (n = 88). Survey questions assessed frequency of use, motivations for use, and perceptions of app usefulness. The pedagogical impact of NutriBiochem was evaluated by measuring the relationship between frequency of use and final course grade. Just over half of the students used the app, and ∼80% of users accessed the app moderately or infrequently. Smartphones were the most common device and the preferred device on which to access the app. There were no statistical differences in mean final grade between users and nonusers. Students with higher comfort levels with technology accessed the app more broadly than those with lower level of comfort with technology. Over 75% of students agreed that NutriBiochem was a useful learning tool, but fewer (∼45%) felt it helped them perform better in the course. The findings of this study are important, as they suggest that NutriBiochem is an effective study tool for students who are comfortable with technology, and access it regularly. Overall, the use of mobile applications in science education has been shown to be: 1) effective in enhancing students' learning experience; 2) relevant and important as an emergent method of learning given modern pressures facing higher education; and, 3) met with positive student attitudes and perceptions in terms of adopting and using such technology for educational purposes. PMID:24375862

  11. Ceres model application for increasing preparedness to climate variability in agricultural planning

    NASA Astrophysics Data System (ADS)

    Popova, Z.; Kercheva, M.

    2003-04-01

    The paper should demonstrate how knowledge of climate variability and simulation analyses over 30 years could be used to study the vulnerability of maize and wheat ecosystems in the region of Sofia. The procedure of stepwise calibration and validation of agricultural simulation CERES-maize and CERES-wheat models was used at two fields of contrastive soil conditions (Chromic Luvisol and Vertisol). Lysimeters observations under "Chromic Luvisol-maize" combination enabled to test integrally the prediction capacity of CERES-maize, including water and nitrogen fluxes at the boundaries of this vulnerable system over "1.05.1997-1.10.1999" period. The role of soil, crop, climate and irrigation scheduling (under maize only) on drought consequences and groundwater pollution was quantified for four "soil-crop" combinations by CERES models. Four water supply treatments of maize were considered on both soils: one under rainfed conditions and three with varied irrigation application. Water application in initial, development, and mid season growth stages was scheduled by CROPWAT model at any day that soil matrix suction fell to 3.0-3.2 pF with one irrigation scenario and 2.4-2.6 pF with another one. The third drainage-controlling scenario was developed on the basis of 50-75% of the required irrigation depth by satisfying most sensible phases of maize. It was established that "Chromic Luvisol -maize - dry land" combination was associated with the greatest coefficient of variability of yields (Cv=42%) and drought frequency (75% of the years with yield losses more than 20%). Average yield losses in dry vegetation seasons were 60% of the productivity potential under sufficient soil moisture. As a consequence maize cultivation under these conditions was inefficient in 20% of the years when production expenses were greater than losses. Any irrigation practice, even the drainage controlling scenario, mitigated drought consequences on risky soils as Chromic Luvisol by reducing year

  12. 42 CFR 57.306 - Eligibility and selection of nursing student loan applicants.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 1 2014-10-01 2014-10-01 false Eligibility and selection of nursing student loan... STUDENT LOANS Nursing Student Loans § 57.306 Eligibility and selection of nursing student loan applicants. (a) Determination of eligibility. (1) Applicants are eligible for consideration for a nursing...

  13. 42 CFR 57.306 - Eligibility and selection of nursing student loan applicants.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 1 2012-10-01 2012-10-01 false Eligibility and selection of nursing student loan... STUDENT LOANS Nursing Student Loans § 57.306 Eligibility and selection of nursing student loan applicants. (a) Determination of eligibility. (1) Applicants are eligible for consideration for a nursing...

  14. 42 CFR 57.306 - Eligibility and selection of nursing student loan applicants.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Eligibility and selection of nursing student loan... STUDENT LOANS Nursing Student Loans § 57.306 Eligibility and selection of nursing student loan applicants. (a) Determination of eligibility. (1) Applicants are eligible for consideration for a nursing...

  15. 42 CFR 57.306 - Eligibility and selection of nursing student loan applicants.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 1 2011-10-01 2011-10-01 false Eligibility and selection of nursing student loan... STUDENT LOANS Nursing Student Loans § 57.306 Eligibility and selection of nursing student loan applicants. (a) Determination of eligibility. (1) Applicants are eligible for consideration for a nursing...

  16. 42 CFR 57.306 - Eligibility and selection of nursing student loan applicants.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 1 2013-10-01 2013-10-01 false Eligibility and selection of nursing student loan... STUDENT LOANS Nursing Student Loans § 57.306 Eligibility and selection of nursing student loan applicants. (a) Determination of eligibility. (1) Applicants are eligible for consideration for a nursing...

  17. Application of Satellite Data for Early Season Assessment of Fallowed Agricultural Lands for Drought Impact Reporting

    NASA Astrophysics Data System (ADS)

    Rosevelt, C.; Melton, F. S.; Johnson, L.; Verdin, J. P.; Thenkabail, P. S.; mueller, R.; Zakzeski, A.; Jones, J.

    2013-12-01

    Rapid assessment of drought impacts can aid water managers in assessing mitigation options, and guide decision making with respect to requests for local water transfers, county drought disaster designations, or state emergency proclamations. Satellite remote sensing offers an efficient way to provide quantitative assessments of drought impacts on agricultural production and land fallowing associated with reductions in water supply. A key advantage of satellite-based assessments is that they can provide a measure of land fallowing that is consistent across both space and time. Here we describe an approach for monthly mapping of land fallowing developed as part of a joint effort by USGS, USDA, and NASA to provide timely assessments of land fallowing during drought events. This effort has used the Central Valley of California as a pilot region for development and testing of an operational approach. To provide quantitative measures of fallowed land from satellite data early in the season, we developed a decision tree algorithm and applied it to timeseries of normalized difference vegetation index (NDVI) data from Landsat TM, ETM+, and MODIS. Our effort has been focused on development of leading indicators of drought impacts in the March - June timeframe based on measures of crop development patterns relative to a reference period with average or above average rainfall. This capability complements ongoing work by USDA to produce and publicly release within-season estimates of fallowed acreage from the USDA Cropland Data Layer. To assess the accuracy of the algorithms, monthly ground validation surveys were conducted along transects across the Central Valley at more than 200 fields per month from March - June, 2013. Here we present the algorithm for mapping fallowed acreage early in the season along with results from the accuracy assessment, and discuss potential applications to other regions.

  18. Pesticide Exposures and Body Mass Index (BMI) of Pesticide Applicators From the Agricultural Health Study.

    PubMed

    LaVerda, Nancy L; Goldsmith, David F; Alavanja, Michael C R; Hunting, Katherine L

    2015-01-01

    Endocrine-disrupting chemicals, including pesticides, may be associated with weight gain. This is the first longitudinal study to examine a potential association between weight gain and pesticides using data on 8,365 male pesticide applicators from the Agricultural Health Study (AHS) cohort established in 1993. The relationship between total cumulative days of exposure to pesticide functional/chemical classes and to the four most frequently used individual pesticides was studied in relation to body mass index (BMI) at the time of 5-yr follow-up (beginning in 1998) with the length of the exposure period dating back to age 20 yr. Multiple regression, Spearman correlation, ordinal logistic regression, and logistic regression models all utilized a Bonferroni-adjusted p value, were adjusted for relevant covariates, and were stratified by state of residence (Iowa/North Carolina) and presence/absence of weight-related health conditions. Adjusted multiple regression yielded statistically significant positive parameter estimates for the study sample and Iowa subgroups with consistent findings for triazine herbicides and atrazine: Change in BMI per 100 cumulative pesticide exposure days ranged from 0.07 to 0.11 for triazine herbicides and from 0.10 to 0.19 for atrazine. Ordinal logistic regression compared normal weight with overweight and with obese using the zero exposure category as referent. Statistically significant adjusted odds ratios identified for the study sample and both state subgroups for the highest level of atrazine exposure ranged from 1.4 to 1.7. Further investigation is warranted to evaluate the associations identified here. PMID:26479458

  19. Satellite surface soil moisture from SMOS and Aquarius: Assessment for applications in agricultural landscapes

    NASA Astrophysics Data System (ADS)

    Champagne, Catherine; Rowlandson, Tracy; Berg, Aaron; Burns, Travis; L'Heureux, Jessika; Tetlock, Erica; Adams, Justin R.; McNairn, Heather; Toth, Brenda; Itenfisu, Daniel

    2016-03-01

    Satellite surface soil moisture has become more widely available in the past five years, with several missions designed specifically for soil moisture measurement now available, including the Soil Moisture and Ocean Salinity (SMOS) mission and the Soil Moisture Active/Passive (SMAP) mission. With a wealth of data now available, the challenge is to understand the skill and limitations of the data so they can be used routinely to support monitoring applications and to better understand environmental change. This paper examined two satellite surface soil moisture data sets from the SMOS and Aquarius missions against in situ networks in largely agricultural regions of Canada. The data from both sensors was compared to ground measurements on both an absolute and relative basis. Overall, the root mean squared errors for SMOS were less than 0.10 m3 m-3 at most sites, and less where the in situ soil moisture was measured at multiple sites within the radiometer footprint (sites in Saskatchewan, Manitoba and Ontario). At many sites, SMOS overestimates soil moisture shortly after rainfall events compared to the in situ data; however this was not consistent for each site and each time period. SMOS was found to underestimate drying events compared to the in situ data, however this observation was not consistent from site to site. The Aquarius soil moisture data showed higher root mean squared errors in areas where there were more frequent wetting and drying cycles. Overall, both data sets, and SMOS in particular, showed a stable and consistent pattern of capturing surface soil moisture over time.

  20. 77 FR 74278 - Proposed Information Collection (Internet Student CPR Web Registration Application); Comment Request

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-13

    ... AFFAIRS Proposed Information Collection (Internet Student CPR Web Registration Application); Comment... solicits comments on information needed to establish an online web registration application. DATES: Written... use of other forms of information technology. Title: Internet Student CPR Web Registration...

  1. Agricultural Application of Higher Plants for Their Antimicrobial Potentials in China

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This chapter describes published research into Chinese medicinal and aromatic plants as sources of new crop protectants. Literature was reviewed based on our personal experience, reported antimicrobial activity against plant pathogens, novel chemical structures, and potential for agricultural utiliz...

  2. Application of ground-based LIDAR for gully investigation in agricultural landscapes

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Detailed scientific investigation of gullies in agricultural fields requires accurate topographic information with adequate temporal and spatial resolution. New technologies, such as ground-based LIDAR systems, are capable of generating datasets with high temporal and spatial resolutions. The spatia...

  3. Municipal biosolid applications: Improving ecosystem services across urban, agricultural, and wildlife interfaces in Austin, Texas

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Our project encompasses emerging contaminants, ecosystem services, and urban-agriculture-wildlife interfaces. This seminal research collaboration between USDA-ARS Grassland, Soil, and Water Research Laboratory, The City of Austin Water Utility, and Texas Parks and Wildlife Environmental Contaminant...

  4. PESTICIDE LEACHING ANALYTICAL MODEL AND GIS-BASED APPLICATION IN AGRICULTURAL WATERSHEDS

    EPA Science Inventory

    Groundwater contamination by pesticides and other organic pollutants has been detected across agricultural areas and is on the increase. Because groundwater monitoring is too costly to define the geographic extent of contamination at such large scales, indirect methods are needed...

  5. Development of an unmanned agricultural robotics system for measuring crop conditions for precision aerial application

    Technology Transfer Automated Retrieval System (TEKTRAN)

    An Unmanned Agricultural Robotics System (UARS) is acquired, rebuilt with desired hardware, and operated in both classrooms and field. The UARS includes crop height sensor, crop canopy analyzer, normalized difference vegetative index (NDVI) sensor, multispectral camera, and hyperspectral radiometer...

  6. Application of Landsat data to map and monitor agricultural land cover

    NASA Astrophysics Data System (ADS)

    Erdenee, B.; Tana, Gegen; Tateishi, Ryutaro

    2010-11-01

    Agriculture is one of the major economic sectors of Mongolia and the country's economy is very much dependent on the development of agricultural production. Being the rural and poorest conditions of Mongolia, 60-90% of its labor force employed in agriculture and agricultural sector has a prominent economic role. Mongolian agriculture has been successful in increasing food grains production in the past, guided by the goals of self-sufficiency in the country. The satellite imagery has been effectively utilized for classifying land cover types and detecting land cover conditions. Satellite image classification involves designing and developing efficient image classifiers. With satellite image data and image analysis methods multiplying rapidly, selecting the right mix of data sources and data analysis approaches has become critical to the generation of quality land-use maps. Objective of this study to monitor in the agricultural land cover changes in the Tov aimag, as there is important agricultural producing area in Mongolia. We have developed approaches to map and monitor land cover and land use change across in the Tov aimag using multi-spectral image data. In this study, maximum likelihood supervised classification was applied to Landsat TM and ETM images acquired in 1989 and 2000, respectively, to map cropland area cover changes in the Tov aimag of Mongolia. A supervised classification was carried out on the six reflective bands (bands 1-5 and band 7) for the two images individually with the aid of ground based agricultural monitoring data. Results were then tested using ground check data.

  7. Application of Landsat data to map and monitor agricultural land cover

    NASA Astrophysics Data System (ADS)

    Erdenee, B.; Tana, Gegen; Tateishi, Ryutaro

    2009-09-01

    Agriculture is one of the major economic sectors of Mongolia and the country's economy is very much dependent on the development of agricultural production. Being the rural and poorest conditions of Mongolia, 60-90% of its labor force employed in agriculture and agricultural sector has a prominent economic role. Mongolian agriculture has been successful in increasing food grains production in the past, guided by the goals of self-sufficiency in the country. The satellite imagery has been effectively utilized for classifying land cover types and detecting land cover conditions. Satellite image classification involves designing and developing efficient image classifiers. With satellite image data and image analysis methods multiplying rapidly, selecting the right mix of data sources and data analysis approaches has become critical to the generation of quality land-use maps. Objective of this study to monitor in the agricultural land cover changes in the Tov aimag, as there is important agricultural producing area in Mongolia. We have developed approaches to map and monitor land cover and land use change across in the Tov aimag using multi-spectral image data. In this study, maximum likelihood supervised classification was applied to Landsat TM and ETM images acquired in 1989 and 2000, respectively, to map cropland area cover changes in the Tov aimag of Mongolia. A supervised classification was carried out on the six reflective bands (bands 1-5 and band 7) for the two images individually with the aid of ground based agricultural monitoring data. Results were then tested using ground check data.

  8. Selected reading in agricultural applications of small-format aerial photography

    USGS Publications Warehouse

    1980-01-01

    This collection of material has been assembled in response to a growing.interest in the use of low-cost, small-format aerial photography in the management of agricultural resources. Together, these articles serve to document the prevailing level of interest in the subject and provide an insight as to what can reasonably be expected from the use of this powerful agricultural management tool. 

  9. The Effect of Web-Based Project Applications on Students' Attitudes towards Chemistry

    ERIC Educational Resources Information Center

    Morgil, Inci; Gungor Seyhan, Hatice; Ural Alsan, Evrim; Temel, Senar

    2008-01-01

    Students perform intensive web-based applications during their education. One of these is project-based application. In this study, the effect of web based project applications on students' attitudes towards chemistry has been investigated. 42 students attending Hacettepe University, Faculty of Education, and Department of Chemistry Education have…

  10. The Current Situation of Learning and Life of Students Changing Majors in Universities under the Multi-Campus University Mode and Existing Problems--Taking Students Changing Majors in Sichuan Agricultural University as a Case Study

    ERIC Educational Resources Information Center

    Li, Yu; Li, Weibin

    2013-01-01

    This paper makes a survey on the subjects of undergraduates changing majors in Sichuan Agricultural University who entered the university respectively in 2009, 2010 and 2011 and comes to a basic conclusion on the learning and life condition of students changing majors, that is, good overall adaptation yet low excellence rate; difficulty in taking…

  11. Teachers' Use of Agricultural Laboratories in Secondary Agricultural Education

    ERIC Educational Resources Information Center

    Shoulders, Catherine W.; Myers, Brian E.

    2012-01-01

    Trends in the agriculture industry require students to have the ability to solve problems associated with scientific content. Agricultural laboratories are considered a main component of secondary agricultural education, and are well suited to provide students with opportunities to develop problem-solving skills through experiential learning. This…

  12. Using landscape typologies to model socioecological systems: Application to agriculture of the United States Gulf Coast

    DOE PAGESBeta

    Preston, Benjamin L.; King, Anthony Wayne; Mei, Rui; Nair, Sujithkumar Surendran

    2016-02-11

    Agricultural enterprises are vulnerable to the effects of climate variability and change. Improved understanding of the determinants of vulnerability and adaptive capacity in agricultural systems is important for projecting and managing future climate risk. At present, three analytical tools dominate methodological approaches to understanding agroecological vulnerability to climate: process-based crop models, empirical crop models, and integrated assessment models. A common weakness of these approaches is their limited treatment of socio-economic conditions and human agency in modeling agroecological processes and outcomes. This study proposes a framework that uses spatial cluster analysis to generate regional socioecological typologies that capture geographic variance inmore » regional agricultural production and enable attribution of that variance to climatic, topographic, edaphic, and socioeconomic components. This framework was applied to historical corn production (1986-2010) in the U.S. Gulf of Mexico region as a testbed. The results demonstrate that regional socioeconomic heterogeneity is an important driving force in human dominated ecosystems, which we hypothesize, is a function of the link between socioeconomic conditions and the adaptive capacity of agricultural systems. Meaningful representation of future agricultural responses to climate variability and change is contingent upon understanding interactions among biophysical conditions, socioeconomic conditions, and human agency their incorporation in predictive models.« less

  13. Application of nanotechnology for the encapsulation of botanical insecticides for sustainable agriculture: prospects and promises.

    PubMed

    de Oliveira, Jhones Luiz; Campos, Estefânia Vangelie Ramos; Bakshi, Mansi; Abhilash, P C; Fraceto, Leonardo Fernandes

    2014-12-01

    This review article discusses the use of nanotechnology in combination with botanical insecticides in order to develop systems for pest control in agriculture. The main types of botanical insecticides are described, together with different carrier systems and their potential uses. The botanical insecticides include those based on active principles isolated from plant extracts, as well as essential oils derived from certain plants. The advantages offered by the systems are highlighted, together with the main technological challenges that must be resolved prior to future implementation of the systems for agricultural pest control. The use of botanical insecticides associated with nanotechnology offers considerable potential for increasing agricultural productivity, while at the same time reducing impacts on the environment and human health. PMID:25447424

  14. Urinary Biomarker, Dermal, and Air Measurement Results for 2,4-D and Chlorpyrifos Farm Applicators in the Agricultural Health Study

    EPA Science Inventory

    A subset of private pesticide applicators in the Agricultural Health Study (AHS) epidemiological cohort was monitored around the time of their agricultural use of 2,4-D and chlorpyrifos to assess exposure levels and potential determinants of exposure. Measurements included pre- a...

  15. Environmental attitudes and drift reduction behavior among commercial pesticide applicators in a U.S. agricultural landscape.

    PubMed

    Reimer, Adam P; Prokopy, Linda S

    2012-12-30

    Pesticide drift is a significant environmental problem in rural regions, and can result in losses to certain non-target crops and livestock, water and air pollution, and threats to human health. While state agencies seek to control the harmful effects of pesticides through licensing and certificate programs, the adoption rates of drift-reducing practices by commercial applicators remain highly variable. In order to effectively target outreach efforts to commercial applicators, managers need to better understand current use patterns and the motivations behind the adoption and non-adoption of preferred practices. Using a web and mail survey, this study explored environmental attitudes, awareness and concern for pesticide drift, and current practice adoption for drift reduction by commercial pesticide applicators in Indiana. Researchers surveyed three distinct applicator types: industrial weed management (utility right-of-way), agriculture, and aerial (which are mostly spraying in an agricultural setting). Overall, applicators exhibited positive environmental attitudes, but low concern for pesticide drift in the geographic areas where they operate. Adoption rates for several drift reduction technologies were high, particularly for equipment and spray modifications such as low-drift spray nozzles (88%) and increased spray droplet size (92%). Applicators were less familiar with specialty equipment (such as band sprayers, 13% adoption rate) and methods for identifying sensitive sites such as bee colonies and organic crops. Among the three groups, industrial weed management applicators had the lowest adoption rates. Applicators were motivated to adopt drift-reduction practices by the desire to be a good neighbor and a desire to be a good land steward. There is potential for use of more innovative, voluntary approaches to raise awareness of sites sensitive to pesticide drift in rural landscapes. PMID:23062271

  16. Application of the precision agricultural landscape modeling system in semiarid environments

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Precision Agricultural Landscape Modeling System (PALMS) is a terrain and weather driven, distributed parameter hydrological-biophysical model primarily used in the Midwestern United States. Recently, research was started to evaluate the effectiveness of PALMS on irrigated and on dryland croppin...

  17. Application of GPS and Near-Surface Geophysical Methods to Evaluate Differences Between Agricultural Test Plots

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A field research facility with two pairs of replicated agricultural test plots (four total) was established at a location in northwest Ohio during 2005 for the purpose of studying water table management strategies. Initial efforts at this field research facility were devoted to evaluating difference...

  18. Semiparametric Geographically Weighted Response Curves with Application to Site Specific Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Lack of basic knowledge about spatial and treatment varying crop response to irrigation hinders irrigation management and economic analysis for site-specific agriculture. One model that has been postulated for relating crop-specific economic quantities to irrigation is a quadratic response curve of...

  19. Photonics engineering: snapshot applications in healthcare, homeland security, agriculture, and industry

    NASA Astrophysics Data System (ADS)

    Sumriddetchkajorn, Sarun

    2015-01-01

    Throughout my experience in photonics engineering, this article shows that photonics is indeed a key technology enabler for enhancing our competitiveness. In particular, I snapshot the achievements of NECTEC research teams in implementing devices and systems suitable for healthcare, homeland security, agriculture, and industry.

  20. OPTIMAL MANAGEMENT OF NON-POINT SOURCE POLLUTION FROM AGRICULTURE: AN APPLICATION OF DYNAMIC PROGRAMMING

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Agricultural non-point source pollution is a major source of water quality impairment. When considering responses to non-point source pollution, several policy options have been considered historically, including reducing inputs (e.g. fertilizers) altering technologies on the landscape (e.g. conserv...

  1. Applications of UAV imagery for agricultural and environmental research at the USDA Southeast Watershed Research Lab

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The ARS is the USDA's in-house scientific research agency, whose mission is to conduct research to "develop and transfer solutions to agricultural problems of high national priority..." This includes enhancing the natural resource base and the environment, a dimension of particular relevance to the ...

  2. Application of GPS and Near-Surface Geophysical Methods to Evaluate Agricultural Test Plot Differences

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A field research facility with two pairs of replicated agricultural test plots (four total) was established at a location in northwest Ohio during 2005 for the purpose of studying water table management strategies. Initial efforts at this field research facility were devoted to evaluating difference...

  3. Soil Incubation Study to Assess the Impacts of Manure Application and Climate Change on Greenhouse Gas Emissions from Agricultural Soil

    NASA Astrophysics Data System (ADS)

    Schiavone, K.; Barbieri, L.; Adair, C.

    2015-12-01

    Agricultural fields in Vermont's Lake Champlain Basin have problems with the loss of nutrients due to runoff which creates eutrophic conditions in the lakes, ponds and rivers. In efforts to retain nitrogen and other nutrients in the soil farmers have started to inject manure rather than spraying it. Our understanding of the effects this might have on the volatilization of nitrogen into nitrous oxide is limited. Already, agriculture produces 69% of the total nitrous oxide emissions in the US. Understanding that climate change will affect the future of agriculture in Vermont, we set up a soil core incubation test to monitor the emissions of CO₂ and N₂O using a Photoacoustic Gas Sensor (PAS). Four 10 cm soil cores were taken from nine different fertilizer management plots in a No Till corn field; Three Injected plots, three Broadcast plots, and three Plow plots. Frozen soil cores were extracted in early April, and remained frozen before beginning the incubation experiment to most closely emulate three potential spring environmental conditions. The headspace was monitored over one week to get emission rates. This study shows that environmental and fertilizer treatments together do not have a direct correlation to the amount of CO₂ and N₂O emissions from agricultural soil. However, production of CO₂ was 26% more in warmer environmental conditions than in variable(freeze/thaw) environmental conditions. The injected fertilizer produced the most emissions, both CO₂ and N₂O. The total N₂O emissions from Injected soil cores were 2.2x more than from traditional broadcast manure cores. We believe this is likely due to the addition of rich organic matter under anaerobic soil conditions. Although, injected fertilizer is a better application method for reducing nutrient runoff, the global warming potential of N₂O is 298 times that of CO₂. With climate change imminent, assessing the harmful effects and benefits of injected fertilizer is a crucial next step in

  4. Entry-Level Technical Skills That Teachers Expected Students to Learn through Supervised Agricultural Experiences (SAEs): A Modified Delphi Study

    ERIC Educational Resources Information Center

    Ramsey, Jon W.; Edwards, M. Craig

    2012-01-01

    Supervised experiences are designed to provide opportunities for the hands-on learning of skills and practices that lead to successful personal growth and future employment in an agricultural career (Talbert, Vaughn, Croom, & Lee, 2007). In the Annual Report for Agricultural Education (2005-2006), it was stated that 91% of the respondents (i.e.,…

  5. Low-level atmospheric temperature inversions: Characteristics and impacts on agricultural applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Drift from aerial application of crop protection and production materials is influenced by many factors. The applicator is responsible for considering these factors and adjusting application techniques, where applicable, to reduce the potential for drift as much as possible. In an effort to study ...

  6. 42 CFR 57.206 - Eligibility and selection of health professions student loan applicants.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... student loan applicants. 57.206 Section 57.206 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH..., SCHOLARSHIPS AND STUDENT LOANS Health Professions Student Loans § 57.206 Eligibility and selection of health... consideration for a health professions student loan if they are: (i) Residents of the United States and......

  7. Application of chlorine dioxide for disinfection of student health centers.

    PubMed

    Hsu, Ching-Shan; Lu, Ming-Chun; Huang, Da-Ji

    2012-01-01

    In Taiwan, the immediate health care requirements of students and faculty members are satisfied by on-campus medical service centers. The air quality within these centers should comply with the guidelines laid down by the Taiwan Environmental Protection Agency (EPA). Accordingly, this study performed an experimental investigation into the efficiency of various chlorine dioxide applications in disinfecting a local student health center (SHC). The air quality before and after disinfection were evaluated in terms of the bioaerosol levels of bacteria and fungi. The average background levels of bacteria and fungi before disinfection were found to be 1,142 ± 455.4 CFU/m(3) and 520 ± 442.4 CFU/m(3), respectively. Chlorine dioxide (0.3 mg/m(3)) was applied using three different methods, namely a single, one-off application, multiple applications within a single day, and regular (daily) applications. Among the three disinfection methods, the regular application method was found to yield a high disinfection efficiency for both bacteria and fungi, i.e., 6.5 ± 0.7% and 4.2 ± 0.3%, respectively. The average residual bacteria and fungi levels after regular daily interval disinfection were 318.8 ± 51.5 CFU/m(3) and 254.0 ± 43.8 CFU/m(3), respectively. Therefore, the results suggest that the air quality guidelines prescribed by the Taiwan EPA for SHCs and other healthcare facilities can best be achieved by applying chlorine dioxide at regular (daily) intervals. PMID:21452077

  8. Your Renewal FAFSA: Free Application for Federal Student Aid, 2003-2004 School Year.

    ERIC Educational Resources Information Center

    Office of Federal Student Aid (ED), Washington, DC.

    This form is used to renew an application for federal and state grants, work study, and loans. The renewal version contains preprinted information that the student reported for the 2002-2003 school year. As a result, it is faster and easier for the student to use than the Free Application for Federal Student Aid (FAFSA). The form contains…

  9. Teaching international animal agriculture.

    PubMed

    Lukefahr, S D

    1999-11-01

    Students who major in animal science at U.S. institutions are generally exposed to a curriculum that emphasizes commercial, large-scale production of the few traditional food animals: cattle, poultry, sheep, and swine. Globally, most farmers live in lesser-developed countries under limited-resource conditions of land, feed supplies, equipment, and capital. The promotion of commercial animal production enterprises may not be appropriate for such farms because it can subject farmers to considerable economic risk. Rather, use of limited numbers of large livestock, locally adapted breeds, or smaller livestock (e.g., ducks, goats, guinea pigs, and rabbits) may be more appropriate under subsistence, integrated farming systems. In this global context, a course in international animal agriculture has been taught for 15 yr to undergraduate and graduate students. The course consists of a review of traditional and potential livestock species well suited for impoverished families on small farms and methods to implement sustainable livestock projects, including feasibility, design, implementation, monitoring, and evaluation stages. To enhance student understanding, global food issues and challenges are illustrated with case studies. A term paper is also assigned for which students choose three suitable livestock species or local breeds that would be complementary on a small crop farm (< 5 ha). Daily dietary requirements of protein and energy per family member are calculated. Itemized enterprise budgets and production tables are prepared. Early in the course, the general consensus of students was that people who are malnourished and live in poverty have low personal ambition and motivation, and that their problems should be amenable to solution by application of American technology and expertise. The course modifies such attitudes and enhances a student's critical thinking and problem-solving abilities and communication skills. Course evaluations indicated that students believed

  10. Sodium and potassium uptake of Ulva - application of marine macro-algae for space agriculture

    NASA Astrophysics Data System (ADS)

    Yamashita, Masamichi; Tomita-Yokotani, Kaori; Sawaki, Nanase; Notoya, Masahiro; Hashimoto, Hirofumi

    The treatment of sodium, Na, and potassium, K, presents a challenge in space agriculture material recycling, as humans require Na and plants cannot grow at high Na concentrations. Hence, we are proposing the use of marine macro-algae to harvest K and other minerals from composted human waste. Ulva was selected for this feasibility study, since it tolerates a wide range of salinity levels. Growth capability of Ulva was examined under various total salinity levels and proportions of Na and K in the incubation medium. A homeostatic feature of Ulva was found in its intra-cellular concentration of Na and K, and in the intra-cellular ratio between Na and K (at 0.58 ± 0.30, lower than that of human metabolic waste). Intracellular concentration of K in Ulva is 20 times higher than seawater. Because of these characteristics, Ulva is a good candidate species for space agriculture.

  11. Sodium and potassium uptake of Ulva - Application of marine macro-algae for space agriculture

    NASA Astrophysics Data System (ADS)

    Yamashita, M.; Tomita-Yokotani, K.; Hashimoto, H.; Sawaki, N.; Notoya, M.

    2009-04-01

    The treatment of sodium, Na, and potassium, K, presents a challenge in space agriculture material recycling, as humans require Na and plants cannot grow at high Na concentrations. Hence, we are proposing the use of marine macro-algae to harvest K and other minerals from composted human waste. Ulva was selected for this feasibility study, since it tolerates a wide range of salinity levels. Growth capability of Ulva was examined under various total salinity levels and proportions of Na and K in the incubation medium. A homeostatic feature of Ulva was found in its intra-cellular concentration of Na and K, and in the intra-cellular ratio between Na and K (at 0.58 ± 0.30, lower than that of human metabolic waste). Intracellular concentration of K in Ulva is 20 times higher than seawater. Because of these characteristics, Ulva is a good candidate species for space agriculture.

  12. A survey of unmanned ground vehicles with applications to agricultural and environmental sensing

    NASA Astrophysics Data System (ADS)

    Bonadies, Stephanie; Lefcourt, Alan; Gadsden, S. Andrew

    2016-05-01

    Unmanned ground vehicles have been utilized in the last few decades in an effort to increase the efficiency of agriculture, in particular, by reducing labor needs. Unmanned vehicles have been used for a variety of purposes including: soil sampling, irrigation management, precision spraying, mechanical weeding, and crop harvesting. In this paper, unmanned ground vehicles, implemented by researchers or commercial operations, are characterized through a comparison to other vehicles used in agriculture, namely airplanes and UAVs. An overview of different trade-offs of configurations, control schemes, and data collection technologies is provided. Emphasis is given to the use of unmanned ground vehicles in food crops, and includes a discussion of environmental impacts and economics. Factors considered regarding the future trends and potential issues of unmanned ground vehicles include development, management and performance. Also included is a strategy to demonstrate to farmers the safety and profitability of implementing the technology.

  13. Biotechnology and Agriculture.

    ERIC Educational Resources Information Center

    Kenney, Martin

    Even at this early date in the application of biotechnology to agriculture, it is clear that agriculture may provide the largest market for new or less expensive biotechnologically manufactured products. The chemical and pharmaceutical industries that hold important positions in agricultural inputs are consolidating their positions by purchasing…

  14. A review on alum sludge reuse with special reference to agricultural applications and future challenges.

    PubMed

    Dassanayake, K B; Jayasinghe, G Y; Surapaneni, A; Hetherington, C

    2015-04-01

    Alum salts are commonly used in the water industry to promote coagulation in the production of clean drinking water, which results in the generation and accumulation of 'waste' by-product 'alum sludge' in large volumes. Effective and efficient management of alum sludge in an economically and environmentally sustainable manner remains a significant social and environmental concern with ever increasing demand for potable water as a result of rapidly escalating world population and urban expansion. Various intensive practices have been employed to reuse the alum sludge in an attempt to figure out how to fill the gap between successful drinking water treatment process and environmentally friendly alum sludge management for over the years. This paper primarily aimed at comprehensive review of the existing literature on alum sludge characteristics, its environmental concerns and their potential utilization, especially in agricultural and horticultural sectors leading to update our recent state of knowledge and formulate a compendium of present and past developments. Different types of alum sludge utilizations in various fields were recognized and examined. The strengths, weaknesses, opportunities and potential risks of alum sludge reuse options with particular reference to agriculture were highlighted and knowledge gaps were identified. Research priorities and future challenges that will support in the development of effective alumsludgemanagement practices in agriculture with multi-prong strategies were discussed. PMID:25655353

  15. Using Pesticides: Commercial Applicator Manual, Texas. Agricultural Pest Control - Field Crop Pest Control, Fruit and Vegetable Pest Control, Weed and Brush Control.

    ERIC Educational Resources Information Center

    Texas A and M Univ., College Station. Texas Agricultural Extension Service.

    This document is designed to provide commercial pesticide applicators with practical information and regulations required by the Texas Department of Agriculture. The manual includes two major sections. The first section discusses labels and labeling, pesticides, aerial application, ground application, pesticide safety, pests and pest damage,…

  16. From the USDA: Educating the Next Generation: Funding Opportunities in Food, Agricultural, Natural Resources, and Social Sciences Education.

    PubMed

    Parker, Joyce E; Wagner, David J

    2016-01-01

    The National Institute of Food and Agriculture within the U.S. Department of Agriculture provides leadership, capacity, and funds to support the continuing development of a safe and competitive agricultural system. Many of the agency's educational programs are led by the Division of Community and Education (DOCE). These programs span agricultural education, enhancing agricultural literacy through both formal and nonformal education. Here, we have highlighted funding opportunities within DOCE that enhance agricultural education and literacy by supporting the improvement of students' critical communication, leadership skills, and experiential learning opportunities. Some of these programs include opportunities for which students can apply, while others focus on faculty applications. Opportunities faculty can apply for may support student-recruitment and student-retention techniques, curriculum development, innovative teaching methods, and institutional capacity-building programs. Overall, these programs foster a diverse workforce in agricultural science that matches the increasing diversity of the country. PMID:27587851

  17. Beyond land application: Emerging technologies for the treatment and reuse of anaerobically digested agricultural and food waste.

    PubMed

    Sheets, Johnathon P; Yang, Liangcheng; Ge, Xumeng; Wang, Zhiwu; Li, Yebo

    2015-10-01

    Effective treatment and reuse of the massive quantities of agricultural and food wastes generated daily has the potential to improve the sustainability of food production systems. Anaerobic digestion (AD) is used throughout the world as a waste treatment process to convert organic waste into two main products: biogas and nutrient-rich digestate, called AD effluent. Biogas can be used as a source of renewable energy or transportation fuels, while AD effluent is traditionally applied to land as a soil amendment. However, there are economic and environmental concerns that limit widespread land application, which may lead to underutilization of AD for the treatment of agricultural and food wastes. To combat these constraints, existing and novel methods have emerged to treat or reuse AD effluent. The objective of this review is to analyze several emerging methods used for efficient treatment and reuse of AD effluent. Overall, the application of emerging technologies is limited by AD effluent composition, especially the total solid content. Some technologies, such as composting, use the solid fraction of AD effluent, while most other technologies, such as algae culture and struvite crystallization, use the liquid fraction. Therefore, dewatering of AD effluent, reuse of the liquid and solid fractions, and land application could all be combined to sustainably manage the large quantities of AD effluent produced. Issues such as pathogen regrowth and prevalence of emerging organic micro-pollutants are also discussed. PMID:26235446

  18. Pesticide application to agricultural fields: effects on the reproduction and avoidance behaviour of Folsomia candida and Eisenia andrei.

    PubMed

    Santos, M J G; Ferreira, M F L; Cachada, A; Duarte, A C; Sousa, J P

    2012-11-01

    The objective of this work was to assess the impact of pesticide application to non-target soil organisms simulating what happens following pesticide application in agricultural fields and thus obtaining higher realism on results obtained. For that purpose, three commercial formulations containing the insecticides chlorpyrifos and endosulfan and the herbicide glyphosate were applied to a Mediterranean agricultural field. The soil was collected after spraying and dilution series were prepared with untreated soil to determine the impact of the pesticides on the avoidance behaviour and reproduction of the earthworm Eisenia andrei and the collembolan Folsomia candida. A significant avoidance was observed at the recommended field dose in case of endosulfan by earthworms (60 %) and in case of chlorpyrifos by collembolans (64 %). In addition, both insecticides affected the number of juveniles produced by the earthworms (EC(50) were below the recommended field dose). Glyphosate did not seem to affect either earthworms or collembolans in the recommended field dose. Folsomia candida was more sensitive to pesticide application than Eisenia andrei, what was corroborated by the EC(50) and LC(50) values. In conclusion, insecticides may affect the structure of the soil community by reducing the survival of collembolans and the reproductive capacity of collembolans and earthworms. PMID:22711551

  19. River water quality management considering agricultural return flows: application of a nonlinear two-stage stochastic fuzzy programming.

    PubMed

    Tavakoli, Ali; Nikoo, Mohammad Reza; Kerachian, Reza; Soltani, Maryam

    2015-04-01

    In this paper, a new fuzzy methodology is developed to optimize water and waste load allocation (WWLA) in rivers under uncertainty. An interactive two-stage stochastic fuzzy programming (ITSFP) method is utilized to handle parameter uncertainties, which are expressed as fuzzy boundary intervals. An iterative linear programming (ILP) is also used for solving the nonlinear optimization model. To accurately consider the impacts of the water and waste load allocation strategies on the river water quality, a calibrated QUAL2Kw model is linked with the WWLA optimization model. The soil, water, atmosphere, and plant (SWAP) simulation model is utilized to determine the quantity and quality of each agricultural return flow. To control pollution loads of agricultural networks, it is assumed that a part of each agricultural return flow can be diverted to an evaporation pond and also another part of it can be stored in a detention pond. In detention ponds, contaminated water is exposed to solar radiation for disinfecting pathogens. Results of applying the proposed methodology to the Dez River system in the southwestern region of Iran illustrate its effectiveness and applicability for water and waste load allocation in rivers. In the planning phase, this methodology can be used for estimating the capacities of return flow diversion system and evaporation and detention ponds. PMID:25740683

  20. Caracteristicas de los Estudiantes de Ciencias Agricolas y de Economia Domestica de la Universidad de Puerto Rico (Characteristics of the Agricultural Science and Home Economics Students of the University of Puerto Rico). Publicacion 135.

    ERIC Educational Resources Information Center

    Lube, Edna Droz; Calero, Reinaldo

    As part of a U.S. Department of Agriculture research project on young adults, a questionnaire was distributed in the fall of 1977 to all agriculture science and home economics students at the University of Puerto Rico in order to determine their personal and parental backgrounds; work, college, and high school experiences; life goals and attitudes…

  1. An Urban Agricultural Program

    ERIC Educational Resources Information Center

    Foster, Parker V.

    1974-01-01

    A program of Agricultural Education (primarily horticulture) was started in the San Diego, California school district in 1967. The philosophy behind the program, the growth in terms of students involved, and the structural framework of the program are outlined. (KP)

  2. Land Application of Wastewater Sludges: A National Science Foundation Student-Originated Studies Project.

    ERIC Educational Resources Information Center

    Bender, Timothy J.; Barnard, Walther M.

    1981-01-01

    Summarizes a student-originated studies project, funded by the National Science Foundation, on land application of wastewater sludges. Describes the students' proposal, research methods, and evaluation of the project. (DS)

  3. Practical Applications of Space Systems, Supporting Paper 4: Agriculture, Forest, and Range.

    ERIC Educational Resources Information Center

    National Academy of Sciences - National Research Council, Washington, DC. Assembly of Engineering.

    This report summarizes the findings of one of fourteen panels that studied the progress of space science applications and defined user needs potentially capable of being met by space-system applications. The study was requested by the National Aeronautics and Space Administration (NASA) and was conducted by the Space Applications Board. The panels…

  4. Personal Achievement Reading: Agriculture.

    ERIC Educational Resources Information Center

    Rozeboom, Deborah A.

    Exercises are provided in a set of five workbooks designed to aid students in agricultural programs in building vocabulary and reading skills. Each workbook borrows from terminology of agriculture to provide explanations and exercises for a sequential series of instructional objectives. One workbook concentrates on the ability to determine word…

  5. Theme: Urban Agriculture.

    ERIC Educational Resources Information Center

    Ellibee, Margaret; And Others

    1990-01-01

    On the theme of secondary agricultural education in urban areas, this issue includes articles on opportunities, future directions, and implications for the profession; creative supervised experiences for horticulture students; floral marketing, multicultural education; and cultural diversity in urban agricultural education. (JOW)

  6. Application of step-drawdown test for planning agricultural groundwater well maintenance in S. Korea

    NASA Astrophysics Data System (ADS)

    Song, Sung-Ho; Lee, Byung-Sun

    2015-04-01

    Well efficiency decreases with time after development and the pumping rate is reduced sharply at a certain point. However, the rapid decrease of the efficiency definitely depends upon the physical characteristics of the aquifer, chemical properties of groundwater, pore clogging by adsorptive/precipitable materials, and use of groundwater well. In general, it is expected that an adequate and ongoing maintenance for the well is effective in extension of operating periods because major maintenance frequency requirement at municipal wells placed in the crystalline rock aquifer is known to be relatively longer. The proportion of agricultural wells (583,748) against the total groundwater ones (1,380,715) is 42.3% in 2011, S. Korea. Groundwater use accounts for 1.9 billion m3/year which indicates 48.9% of total amount available groundwater resources. Approximate 69% of the total agricultural public wells placed in crystalline rock aquifer have passed more than 10 years after development. In this study, the increase of well efficiency before and after the well disinfection/cleaning for agricultural groundwater wells in the mountains, plains, and coastal aquifer with the data of step-drawdown test was evaluated, respectively. With the concept of critical yield, the increase of available amount of groundwater was quantitatively analyzed after treatment. From the results, well efficiency increased approximately 1.5 to 4 times depending on pumping rate when the proper disinfection/cleaning methods to the wells were applied. In addition, it showed that the pumping rate of approximate 4-8% with the critical yield from step-drawdown test increased and these effects were the highest in wells which are more than 10 years elapsed. Therefore, it would be concluded that the well disinfection/cleaning methods for the purpose of increasing the efficiency are more effective for the wells that are older than 10 years.

  7. The Effect of Computer Literacy Course on Students' Attitudes toward Computer Applications

    ERIC Educational Resources Information Center

    Erlich, Zippy; Gadot, Rivka; Shahak, Daphna

    2009-01-01

    Studies indicate that the use of technologies as teaching aids and tools for self-study is influenced by students' attitudes toward computers and their applications. The purpose of this study is to determine whether taking a Computer Literacy and Applications (CLA) course has an impact on students' attitudes toward computer applications, across…

  8. Predicting E-Learning Application in Agricultural Higher Education Using Technology Acceptance Model

    ERIC Educational Resources Information Center

    Rezaei, Masoud; Mohammadi, Hamid Movahed; Asadi, Ali; Kalantary, Khalil

    2008-01-01

    E-learning is significant breakthrough in teaching and learning. Internet or web technologies are important because they facilitate and enhance communications among instructors and learners and provide tools to encourage creativity and initiative. If internet-based learning environments are to benefit students, then it is important from the…

  9. Rhinitis Associated with Pesticide Use Among Private Pesticide Applicators in the Agricultural Health Study

    PubMed Central

    Slager, Rebecca E.; Simpson, Sean L.; LeVan, Tricia D.; Poole, Jill A.; Sandler, Dale P.; Hoppin, Jane A.

    2010-01-01

    Farmers commonly experience rhinitis but the risk factors are not well-characterized. The aim of this study was to analyze cross-sectional data on rhinitis in the past year and pesticide use from 21,958 Iowa and North Carolina farmers in the Agricultural Health Study, enrolled 1993–7, to evaluate pesticide predictors of rhinitis. Polytomous and logistic regression models were used to assess association between pesticide use and rhinitis while controlling for demographics and farm-related exposures. Sixty-seven % of farmers reported current rhinitis and 39% reported three or more rhinitis episodes. The herbicides glyphosate [Odds Ratio (OR) = 1.09, 95% Confidence Interval (95% CI) = 1.05–1.13] and petroleum oil (OR = 1.12, 95% CI = 1.05–1.19) were associated with current rhinitis and increased rhinitis episodes. Of the insecticides, 4 organophosphates (chlorpyrifos, diazinon, dichlorvos, and malathion), carbaryl and use of permethrin on animals were predictors of current rhinitis. Diazinon was significant in the overall polytomous model and was associated with an elevated OR of 13+ rhinitis episodes (13+ episodes OR = 1.23, 95% CI = 1.09–1.38). The fungicide captan was also a significant predictor of rhinitis. Use of petroleum oil, malathion, permethrin and the herbicide metolachlor were significant in exposure-response polytomous models. Specific pesticides may contribute to rhinitis in farmers; agricultural activities did not explain these findings. PMID:20818537

  10. Cellulose nanocrystals in nanocomposite approach: Green and high-performance materials for industrial, biomedical and agricultural applications

    NASA Astrophysics Data System (ADS)

    Fortunati, E.; Torre, L.

    2016-05-01

    The need to both avoid wastes and find new renewable resources has led to a new and promising research based on the possibility to revalorize the biomass producing sustainable chemicals and/or materials which may play a major role in replacing systems traditionally obtained from non-renewable sources. Most of the low-value biomass is termed lignocellulosic, referring to its main constituent biopolymers: cellulose, hemicelluloses and lignin. In this context, nanocellulose, and in particular cellulose nanocrystals (CNC), have gain considerable attention as nanoreinforcement for polymer matrices, mainly biodegradable. Derived from the most abundant polymeric resource in nature and with inherent biodegradability, nanocellulose is an interesting nanofiller for the development of nanocomposites for industrial, biomedical and agricultural applications. Due to the high amount of hydroxyl groups on their surface, cellulose nanocrystals are easy to functionalize. Well dispersed CNC are able, in fact, to enhance several properties of polymers, i.e.: thermal, mechanical, barrier, surface wettability, controlled of active compound and/or drug release. The main objective here is to give a general overview of CNC applications, summarizing our recent developments of bio-based nanocomposite formulations reinforced with cellulose nanocrystals extracted from different natural sources and/or wastes for food packaging, medical and agricultural sectors.

  11. Iowa Commercial Pesticide Applicator Manual, Category 1C: Agricultural Crop Disease Control. CS-11.

    ERIC Educational Resources Information Center

    Nyvall, Robert F.; Ryan, Stephen O.

    This manual provides information needed to meet specific standards for certification as a pesticide applicator. It summarizes the economically important diseases of field and forage crops such as corn, soybeans and alfalfa. Special attention is given to pesticide application methods and safety. (CS)

  12. Iowa Commercial Pesticide Applicator Manual, Category 1A: Agricultural Weed Control.

    ERIC Educational Resources Information Center

    Jennings, Vivan M.; Ryan, Stephen O.

    This manual provides information needed to meet the standards for pesticide applicator certification. Weeds, their effects, and control in relation to crop production are presented. Pre- and post-emergence treatments are discussed for row crops such as corn and soybeans. Problems with herbicide application to grass pastures, small grains, and…

  13. Land application of coal combustion by-products: Use in agriculture and land reclamation. Final report

    SciTech Connect

    Horn, M.E.

    1995-06-01

    Land application of coal combustion by-products (CCBP) can prove beneficial for a number of reasons. The data presented in this survey provide a basis for optimizing the rates and timing of CCBP applications, selecting proper target soils and crops, and minimizing adverse effects on soil properties, plant responses, and groundwater quality.

  14. Applicability of agricultural waste and by-products for adsorptive removal of heavy metals from wastewater.

    PubMed

    Nguyen, T A H; Ngo, H H; Guo, W S; Zhang, J; Liang, S; Yue, Q Y; Li, Q; Nguyen, T V

    2013-11-01

    This critical review discusses the potential use of agricultural waste based biosorbents (AWBs) for sequestering heavy metals in terms of their adsorption capacities, binding mechanisms, operating factors and pretreatment methods. The literature survey indicates that AWBs have shown equal or even greater adsorption capacities compared to conventional adsorbents. Thanks to modern molecular biotechnologies, the roles of functional groups in biosorption process are better understood. Of process factors, pH appears to be the most influential. In most cases, chemical pretreatments bring about an obvious improvement in metal uptake capacity. However, there are still several gaps, which require further investigation, such as (i) searching for novel, multi-function AWBs, (ii) developing cost-effective modification methods and (iii) assessing AWBs under multi-metal and real wastewater systems. Once these challenges are settled, the replacement of traditional adsorbents by AWBs in decontaminating heavy metals from wastewater can be expected in the future. PMID:24045220

  15. A distribution model for the aerial application of granular agricultural particles

    NASA Technical Reports Server (NTRS)

    Fernandes, S. T.; Ormsbee, A. I.

    1978-01-01

    A model is developed to predict the shape of the distribution of granular agricultural particles applied by aircraft. The particle is assumed to have a random size and shape and the model includes the effect of air resistance, distributor geometry and aircraft wake. General requirements for the maintenance of similarity of the distribution for scale model tests are derived and are addressed to the problem of a nongeneral drag law. It is shown that if the mean and variance of the particle diameter and density are scaled according to the scaling laws governing the system, the shape of the distribution will be preserved. Distributions are calculated numerically and show the effect of a random initial lateral position, particle size and drag coefficient. A listing of the computer code is included.

  16. SOLERAS - Solar Controlled Environment Agriculture Project. Final report, Volume 6. Science Applications, Incorporated system analysis

    SciTech Connect

    Not Available

    1985-01-01

    This report summarizes the results of the systems analysis task for the conceptual design of a commercial size, solar powered, controlled environment agriculture system. The baseline greenhouse system consists of a 5-hectare growing facility utilizing an innovative fluid roof filter concept to provide temperature and humidity control. Fresh water for the system is produced by means of a reverse osmosis desalination unit and energy is provided by means of a solar photovoltaic array in conjunction with storage batteries and a power conditioning unit. The greenhouse environment is controlled via circulation of brackish groundwater in a closed system, which permits water recovery during dehumidification as well as CO/sub 2/ enrichment for increased crop productivity.

  17. SOLERAS - Solar Controlled Environment Agriculture Project. Final report, Volume 5. Science Applications, Incorporated system requirements definition

    SciTech Connect

    Not Available

    1985-01-01

    This report sets forth the system requirements for a Solar Controlled-Environment Agriculture System (SCEAS) Project. In the report a conceptual baseline system description for an engineering test facility is given. This baseline system employs a fluid roof/roof filter in combination with a large storage tank and a ground water heat exchanger in order to provide cooling and heating as needed. Desalination is accomplished by pretreatment followed by reverse osmosis. Energy is provided by means of photovoltaics and wind machines in conjunction with storage batteries. Site and climatic data needed in the design process are given. System performance specifications and integrated system design criteria are set forth. Detailed subsystem design criteria are presented and appropriate references documented.

  18. Application, chemistry, and environmental implications of contaminant-immobilization amendments on agricultural soil and water quality.

    PubMed

    Udeigwe, Theophilus K; Eze, Peter N; Teboh, Jasper M; Stietiya, Mohammed H

    2011-01-01

    Contaminants such as nitrogen (N), phosphorus (P), dissolved organic carbon (DOC), arsenic (As), heavy metals, and infectious pathogens are often associated with agricultural systems. Various soil and water remediation techniques including the use of chemical amendments have been employed to reduce the risks associated with these contaminants. This paper reviews the use of chemical amendments for immobilizing principal agricultural contaminants, the chemistry of contaminant immobilization, and the environmental consequences associated with the use of these chemical products. The commonly used chemical amendments were grouped into aluminum-, calcium-, and iron-containing products. Other products of interest include phosphorus-containing compounds and silicate clays. Mechanisms of contaminant immobilization could include one or a combination of the following: surface precipitation, adsorption to mineral surfaces (ion exchange and formation of stable complexes), precipitation as salts, and co-precipitation. The reaction pH, redox potential, clay minerals, and organic matter are potential factors that could control contaminant-immobilization processes. Reviews of potential environmental implications revealed that undesirable substances such as trace elements, fluoride, sulfate, total dissolved solids, as well as radioactive materials associated with some industrial wastes used as amendment could be leached to ground water or lost through runoff to receiving water bodies. The acidity or alkalinity associated with some of the industrial-waste amendments could also constitute a substantial environmental hazard. Chemical amendments could introduce elements capable of inducing or affecting the activities of certain lithotrophic microbes that could influence vital geochemical processes such as mineral dissolution and formation, weathering, and organic matter mineralization. PMID:20832118

  19. LandSoil model application for erosion management in sustainable agricultural landscapes

    NASA Astrophysics Data System (ADS)

    Smetanova, Anna; Follain, Stéphane; Raclot, Damien; Le Bissonnais, Yves

    2016-04-01

    Soil erosion and land degradation can lead to irreversible changes and landscape degradation. In order to achieve the sustainability of agricultural landscapes, the land use scenarios might be developed and tested for their erosion mitigation effects. Despite the importance of the long-term scenarios (which are complicated by predictability of climate change in a small scale, its effect on change in soil properties and crops, and the societal behaviour of individual players), the management decision have to be applied already now. Therefore the short-term and medium term scenarios to achieve the most effective soil management and the least soil erosion footprint are necessary to develop. With increasing importance of individual large erosion events, the event-based models, considering soil properties and landscape structures appears to be suitable. The LandSoil model (Ciampalini et al., 2012) - a landscape evolution model operating at the field/small catchment scale, have been applied in order to analyse the effect of different soil erosion mitigation and connectivity management practices in two different Mediterranean catchments. In the soil erosion scenarios the proposed measures targeted soil erosion on field or on catchment scale, and the effect of different extreme events on soil redistribution was evaluated under different spatial designs. Anna Smetanová has received the support of the AgreenSkills fellowship (under grant agreement n°267196). R. Ciampalini, S. Follain, Y. Le Bissonnais, LandSoil: A model for analysing the impact of erosion on agricultural landscape evolution, Geomorphology, 175-176, 2012, 25-37.

  20. Downstream approaches to phosphorus management in agricultural landscapes: regional applicability and use.

    PubMed

    Kröger, R; Dunne, E J; Novak, J; King, K W; McLellan, E; Smith, D R; Strock, J; Boomer, K; Tomer, M; Noe, G B

    2013-01-01

    This review provides a critical overview of conservation practices that are aimed at improving water quality by retaining phosphorus (P) downstream of runoff genesis. The review is structured around specific downstream practices that are prevalent in various parts of the United States. Specific practices that we discuss include the use of controlled drainage, chemical treatment of waters and soils, receiving ditch management, and wetlands. The review also focuses on the specific hydrology and biogeochemistry associated with each of those practices. The practices are structured sequentially along flowpaths as you move through the landscape, from the edge-of-field, to adjacent aquatic systems, and ultimately to downstream P retention. Often practices are region specific based on geology, cropping practices, and specific P related problems and thus require a right practice, and right place mentality to management. Each practice has fundamental P transport and retention processes by systems that can be optimized by management with the goal of reducing downstream P loading after P has left agricultural fields. The management of P requires a system-wide assessment of the stability of P in different biogeochemical forms (particulate vs. dissolved, organic vs. inorganic), in different storage pools (soil, sediment, streams etc.), and under varying biogeochemical and hydrological conditions that act to convert P from one form to another and promote its retention in or transport out of different landscape components. There is significant potential of hierarchically placing practices in the agricultural landscape and enhancing the associated P mitigation. But an understanding is needed of short- and long-term P retention mechanisms within a certain practice and incorporating maintenance schedules if necessary to improve P retention times and minimize exceeding retention capacity. PMID:23178830