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Agricultural and Resource Economics

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Articles 31 - 60 of 65

Full-Text Articles in Bioresource and Agricultural Engineering

Overcoming India’S Food Security Challenges: The Role Of Intellectual Property Management And Technology Transfer Capacity Building, Stanley Kowalski, Aarushi Gupta, Ifica Mehra Jan 2014

Overcoming India’S Food Security Challenges: The Role Of Intellectual Property Management And Technology Transfer Capacity Building, Stanley Kowalski, Aarushi Gupta, Ifica Mehra

Law Faculty Scholarship

The growth of the Indian economy after Independence has had little impact on the food security of the country. The paper analyses the development of advanced crop varieties through the use of agricultural technologies (hereinafter "agbiotech") within the technology transfer system, a framework which comprises of the interactions of intellectual property rights law and agricultural research and development in India. Through this, the author argues that agricultural innovation in India is failing due to the absence of connections within the technology transfer system and advocates for the creation of a national program aimed at advancing IP and tech-transfer capacity in …

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Velocity Contour Weighting Method. Ii: Evaluation In Trapezoidal Channels And Roughness Sensitivity, Daniel Howes, Brett F. Sanders Nov 2011

Velocity Contour Weighting Method. Ii: Evaluation In Trapezoidal Channels And Roughness Sensitivity, Daniel Howes, Brett F. Sanders

BioResource and Agricultural Engineering

The Velocity Contour Weighting Method (VCWM) was developed in Part I to accurately estimate the cross-sectional average velocity of a prismatic channel flow using acoustic Doppler velocity meter (ADVM) measurements of centerline velocity. Here, the VCWM is validated by its successful application to 25 different concrete-lined trapezoidal channels used for irrigation water delivery. At each site, the cross-sectional distribution of velocity is measured by an acoustic Doppler velocimeter (ADV), which is moved horizontally and vertically through a sampling grid. Multiple tests at some sites led to a total of 51 sets of cross-sectional measurements. ADVM measurements are simulated by interpolating …

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Velocity Contour Weighting Method. I: Algorithm Development And Laboratory Testing, Daniel J. Howes, Brett F. Sanders Nov 2011

Velocity Contour Weighting Method. I: Algorithm Development And Laboratory Testing, Daniel J. Howes, Brett F. Sanders

BioResource and Agricultural Engineering

An algorithm is developed for real-time estimation of the cross-sectional average velocity of a channel flow by using an upward-looking pulsed wave acoustic Doppler velocity meters (ADVM). The Velocity Contour Weighting Method (VCWM) is applicable to gradually varied flows in prismatic channels and requires little to no calibration. VCWM estimates the average velocity as a weighted average of ADVM bin velocities. Weights are based on the velocity distribution sampled by the ADVM. Collectively, the VCWM is able to adapt to a wide range of channel geometry and roughness features. Expressions for the velocity weights are developed by first applying a …

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Intraseasonal Management Strategies For Deficit Irrigation, Isaac I. N. Mortensen Apr 2011

Intraseasonal Management Strategies For Deficit Irrigation, Isaac I. N. Mortensen

Department of Agricultural Economics: Dissertations, Theses, and Student Research

Reduced availability of irrigation water to producers has led to the need for intraseasonal management strategies that efficiently use the limited supply of irrigation water.  Historical weather data was used to develop a range of conditions experienced at the location.  Sound weather data improves the dependability of management strategies.  Data from weather stations on the Automated Weather Data Network and the Colorado AgMet network were evaluated based upon net radiation and dew point temperature observations expected in an irrigated agricultural setting.  This weather data was used to create a relationship between the Penman-Montieth evapotranspiration (ET) and Hargreaves ET and …

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Subcritical Contraction For Improved Open-Channel Flow Measurement Accuracy With An Upward-Looking Advm, Daniel Howes, Charles M. Burt, Brett F. Sanders Sep 2010

Subcritical Contraction For Improved Open-Channel Flow Measurement Accuracy With An Upward-Looking Advm, Daniel Howes, Charles M. Burt, Brett F. Sanders

BioResource and Agricultural Engineering

Acoustic Doppler velocity meters (ADVMs) provide an alternative to more traditional flow measurement devices and procedures such as flumes, weirs, and stage rating for irrigation and drainage canals. However, the requirements for correct calibration are extensive and complex. A three-dimensional computational fluid dynamics (CFD) model was used to design a subcritical rapidly varied flow contraction that provides a consistent linear relationship between the upward-looking ADVM sample velocity and the cross-sectional average velocity in order to improve ADVM accuracy without the need for in situ calibration. CFD simulations validated the subcritical contraction in a rectangular and trapezoidal cross section by showing …

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Agricultural Systems: Agroecology And Rural Innovations For Development [Book Review], Charles A. Francis Jan 2008

Agricultural Systems: Agroecology And Rural Innovations For Development [Book Review], Charles A. Francis

Department of Agronomy and Horticulture: Faculty Publications

To welcome yet another book on sustainable development, a reviewer must look for what is unique and what adds value to the volumes already published. In Agricultural Systems, editors Sieglinde Snapp and Barry Pound have assembled a collection of chapters that goes beyond the usual praise and criticism of the green revolution and the focus on economic development. Their book provides a first-hand story by people with lengthy experiences in the field, especially in Africa, who have developed and tested grassroots, participatory development approaches. The result is a valuable set of principles, strategies and case studies that paint a new …

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Intellectual Property Management In Health And Agricultural Innovation: A Handbook Of Best Practices, Vol. 2, Anatole Krattiger, Richard T. Mahoney, Lita Nelsen, Jennifer A. Thomson, Alan B. Bennett, Kanikaram Satyanarayana, Gregory D. Graff, Carlos Fernandez, Stanley Kowalski Jan 2007

Intellectual Property Management In Health And Agricultural Innovation: A Handbook Of Best Practices, Vol. 2, Anatole Krattiger, Richard T. Mahoney, Lita Nelsen, Jennifer A. Thomson, Alan B. Bennett, Kanikaram Satyanarayana, Gregory D. Graff, Carlos Fernandez, Stanley Kowalski

Law Faculty Scholarship

Prepared by and for policy-makers, leaders of public sector research establishments, technology transfer professionals, licensing executives, and scientists, this online resource offers up-to-date information and strategies for utilizing the power of both intellectual property and the public domain. Emphasis is placed on advancing innovation in health and agriculture, though many of the principles outlined here are broadly applicable across technology fields. Eschewing ideological debates and general proclamations, the authors always keep their eye on the practical side of IP management. The site is based on a comprehensive Handbook and Executive Guide that provide substantive discussions and analysis of the opportunities …

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Intellectual Property Management In Health And Agricultural Innovation: Executive Guide, Anatole Krattiger, Richard T. Mahoney, Lita Nelsen, Jennifer A. Thomson, Alan B. Bennett, Kanikaram Satyanarayana, Gregory D. Graff, Carlos Fernandez, Stanley Kowalski Jan 2007

Intellectual Property Management In Health And Agricultural Innovation: Executive Guide, Anatole Krattiger, Richard T. Mahoney, Lita Nelsen, Jennifer A. Thomson, Alan B. Bennett, Kanikaram Satyanarayana, Gregory D. Graff, Carlos Fernandez, Stanley Kowalski

Law Faculty Scholarship

Prepared by and for policy-makers, leaders of public sector research establishments, technology transfer professionals, licensing executives, and scientists, this online resource offers up-to-date information and strategies for utilizing the power of both intellectual property and the public domain. Emphasis is placed on advancing innovation in health and agriculture, though many of the principles outlined here are broadly applicable across technology fields. Eschewing ideological debates and general proclamations, the authors always keep their eye on the practical side of IP management. The site is based on a comprehensive Handbook and Executive Guide that provide substantive discussions and analysis of the opportunities …

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Intellectual Property Management In Health And Agricultural Innovation: A Handbook Of Best Practices, Vol. 1, Anatole Krattiger, Richard T. Mahoney, Lita Nelsen, Jennifer A. Thomson, Alan B. Bennett, Kanikaram Satyanarayana, Gregory D. Graff, Carlos Fernandez, Stanley Kowalski Jan 2007

Intellectual Property Management In Health And Agricultural Innovation: A Handbook Of Best Practices, Vol. 1, Anatole Krattiger, Richard T. Mahoney, Lita Nelsen, Jennifer A. Thomson, Alan B. Bennett, Kanikaram Satyanarayana, Gregory D. Graff, Carlos Fernandez, Stanley Kowalski

Law Faculty Scholarship

Prepared by and for policy-makers, leaders of public sector research establishments, technology transfer professionals, licensing executives, and scientists, this online resource offers up-to-date information and strategies for utilizing the power of both intellectual property and the public domain. Emphasis is placed on advancing innovation in health and agriculture, though many of the principles outlined here are broadly applicable across technology fields. Eschewing ideological debates and general proclamations, the authors always keep their eye on the practical side of IP management. The site is based on a comprehensive Handbook and Executive Guide that provide substantive discussions and analysis of the opportunities …

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Non-Standard Structure Flow Measurement Evaluation Using The Flow Rate Indexing Procedure - Qip, Stuart W. Styles, Bryan Busch, Daniel J. Howes, Marcus Cardenas Sep 2006

Non-Standard Structure Flow Measurement Evaluation Using The Flow Rate Indexing Procedure - Qip, Stuart W. Styles, Bryan Busch, Daniel J. Howes, Marcus Cardenas

BioResource and Agricultural Engineering

This report details the proper installation and calibration techniques for hydroacoustic meters. The calibration procedure developed as part of this study is called the Flow Rate Indexing Procedure (QIP). The QIP can be competed by a professional technician with a boat-mounted Acoustic Doppler Profiler (ADP) or a standard current meter. Once the QIP has been used to properly calibrate a hydroacoustic flow meter, the device can then measure and record the flow rate and volume in a channel to within +/- 6% of actual values.

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California Agricultural Water Electrical Energy Requirements, Charles M. Burt, Daniel J. Howes, Gary Wilson Dec 2003

California Agricultural Water Electrical Energy Requirements, Charles M. Burt, Daniel J. Howes, Gary Wilson

BioResource and Agricultural Engineering

The Irrigation Training and Research Center, working under agreement with the California Energy Commission as part of its Public Interest Energy Research Program, conducted an analysis of the energy used to supply water to California's agriculture and examined potential future trends in the agriculture water community to predict future energy requirements.

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Benchmarking Of Flexibility And Needs 2002: Survey Of Non-Federal Irrigation Districts (California Department Of Water Resources), Stuart W. Styles, Daniel Howes Nov 2002

Benchmarking Of Flexibility And Needs 2002: Survey Of Non-Federal Irrigation Districts (California Department Of Water Resources), Stuart W. Styles, Daniel Howes

BioResource and Agricultural Engineering

ITRC interviewed irrigation district personnel from 17 agricultural districts throughout California. Data were analyzed to determine the degree of water delivery flexibility provided to farmers and the extent of existing and planned district modernization. This report did not include irrigation districts with long-term federal contracts.

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Evaporation From Irrigated Agricultural Land In California, Charles M. Burt, Andrew Mutziger, Daniel Howes, Kenneth H. Solomon Jan 2002

Evaporation From Irrigated Agricultural Land In California, Charles M. Burt, Andrew Mutziger, Daniel Howes, Kenneth H. Solomon

BioResource and Agricultural Engineering

No abstract provided.

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Evaporation Estimates For Irrigated Agriculture In California, Charles M. Burt, Daniel J. Howes, Andrew Mutziger Nov 2001

Evaporation Estimates For Irrigated Agriculture In California, Charles M. Burt, Daniel J. Howes, Andrew Mutziger

BioResource and Agricultural Engineering

All California irrigation districts that receive either federal or state water are now required to prepare Water Conservation Plans. For the first time in the history of most districts, they are developing an elementary water balance. The term "elementary" should be emphasized, because there are significant weaknesses in our knowledge of subsurface flows and some components of Evapotranspiration (ET). Irrigation districts generally use published "typical" values of ET for their water balance computations.

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Pesticide Residue Regulation: Analysis Of Food Quality Protection Act Implementation, Linda-Jo Schierow Sep 1999

Pesticide Residue Regulation: Analysis Of Food Quality Protection Act Implementation, Linda-Jo Schierow

RISK: Health, Safety & Environment (1990-2002)

Dr. Schierow discusses the effects of a recent statute on food safety.

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Water Balance-Related Performance Indicators For International Projects, Charles M. Burt, Stuart W. Styles Mar 1999

Water Balance-Related Performance Indicators For International Projects, Charles M. Burt, Stuart W. Styles

BioResource and Agricultural Engineering

A unique study to examine the impacts of irrigation project modernization was funded by the Research Committee of the World Bank and managed by the International Program for Technology Research in Irrigation and Drainage (IPTRID). The project examined 16 irrigation projects in 10 developing countries, 15 of which have been partially modernized in some aspects of hardware and/or management. Besides developing specific recommendations for donor agencies interested in irrigation project modernization, this project also accomplished the following: 1. A Rapid Appraisal Process (RAP) was developed to quickly (within a week) evaluate an irrigation project to assess what type of modernization …

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Evaluation Of Subsurface Drip Irrigation On Peppers, Stuart W. Styles, Charles M. Burt Jan 1999

Evaluation Of Subsurface Drip Irrigation On Peppers, Stuart W. Styles, Charles M. Burt

BioResource and Agricultural Engineering

This paper is a summary of two farms that utilized the California Energy Commission's low-interest loan program to facilitate their entry into drip irrigation. One farm is located near Oxnard, California, USA and the other is located near Gilroy, California, USA. Both of these growers farm about 162 hectares (400 acres) in their overall operations and used the loans to purchase subsurface drip irrigation systems for Peppers. Over $4 million in low-interest loans have been made available to California growers from the California Energy Commission (CEC) since 1986. The CEC initiated the loan program for growers to help implement energy …

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Improving Water Properties To Increase Infiltration Characteristics, Richard W. O. Soppe, Stuart W. Styles Jun 1998

Improving Water Properties To Increase Infiltration Characteristics, Richard W. O. Soppe, Stuart W. Styles

BioResource and Agricultural Engineering

Water properties, such as the viscosity and surface tension, can be affected by temperature and surfactants to Increase infiltration rates into soils. Specifically, they will change the hydraulic conductivity of the soil. A simple soap solution and the new material PAM (inexpensive polymer chemical) were evaluated as surfactants. Laboratory experiments and field tests on a site in Davis, California were done to quantify the effects of changing the water properties. Additional effects, like the improved soil structure during infiltration and less soil particles in tailwater (reduced erosion due to runoff) were observed and are described in this paper. The conclusions …

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Drip Irrigation Technology: A Resource Management Tool For Farmers, John C. Roberts, Stuart W. Styles Jul 1997

Drip Irrigation Technology: A Resource Management Tool For Farmers, John C. Roberts, Stuart W. Styles

BioResource and Agricultural Engineering

No abstract provided.

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Sizing Of Header And Flushing Manifolds For Row Crop Drip, Charles M. Burt, Stuart W. Styles May 1996

Sizing Of Header And Flushing Manifolds For Row Crop Drip, Charles M. Burt, Stuart W. Styles

BioResource and Agricultural Engineering

No abstract provided.

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Incorporation Of Reservoirs Into Irrigation Supply Systems To Simplify Flexible Operations, John L. Merriam, Stuart W. Styles Jan 1996

Incorporation Of Reservoirs Into Irrigation Supply Systems To Simplify Flexible Operations, John L. Merriam, Stuart W. Styles

BioResource and Agricultural Engineering

No abstract provided.

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Study Of The Time Efficiency And Volume Of Wood Used For Three Types Of Stove In The Salitrón Community Of San Juan Ermita, Department Of Chiquimula, Fredy Samuel Coronado López Jan 1995

Study Of The Time Efficiency And Volume Of Wood Used For Three Types Of Stove In The Salitrón Community Of San Juan Ermita, Department Of Chiquimula, Fredy Samuel Coronado López

Theses and Dissertations

In developing countries such as Guatemala, firewood is increasingly being used for cooking in most rural areas. Consequently, there is a shortage of firewood in these areas beca use trees do not grow at the same rate as they are consumed. Some authors report that 90% of the heat from firewood is lost during combustion. Several alternatives to open pit fires exist to reduce the amount of firewood used. However, these alternatives need to be evaluated to determine their efficiency. This project compared the time efficiency and volume of firewood used in the Finlandia style improved stoves, Josefina stoves, and …

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Grassland Basin Irrigation And Drainage Study, Stuart W. Styles, Dennis Westcot, Dr. Charles M. Burt, Ross Steensen Jun 1994

Grassland Basin Irrigation And Drainage Study, Stuart W. Styles, Dennis Westcot, Dr. Charles M. Burt, Ross Steensen

BioResource and Agricultural Engineering

This paper summarizes a project that analyzed the district irrigation efficiency for six subareas of the Grassland Basin roughly representing 80,000 acres on the west side of the San Joaquin Valley near Firebaugh, California. The objectives of this project were to: • Determine the district irrigation efficiency for the six subareas. • Update district drainage policies and water reuse. • Update the geographical information system (GIS). • Perform a pre-plant irrigation efficiency analysis. • Establish a relationship between the drainage volumes and the district irrigation efficiency. • Determine the maximum district irrigation efficiency attainable. • Determine the impact of optimizing …

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Evaluating Strength & Energy Requirements For Workers Picking Vegetables, R. A. Cavaletto, J. Miles, J. Meyers, J. Mehlschau Jun 1994

Evaluating Strength & Energy Requirements For Workers Picking Vegetables, R. A. Cavaletto, J. Miles, J. Meyers, J. Mehlschau

BioResource and Agricultural Engineering

The paper discusses the need to obtain field data to evaluate the strength and energy requirements for workers picking a variety of vegetables. This information is central to the evaluation of hazards related to repetitive motion, excessive stress, and fatigue. Results can be used to select activities which should be targeted for future engineering design projects. Preliminary data from a commercial broccoli harvesting operation is included.

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Irrigation Methods For Drainage Reduction Subsurface Drip Vs. Furrow Irrigation, J.. D. Oster, R. B. Smith, C. Phene, A. Fulton, S. W. Styles, T. Fernandes Jan 1993

Irrigation Methods For Drainage Reduction Subsurface Drip Vs. Furrow Irrigation, J.. D. Oster, R. B. Smith, C. Phene, A. Fulton, S. W. Styles, T. Fernandes

BioResource and Agricultural Engineering

No abstract provided.

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Broad-Crested Weir Application On 15,000-Acre Farm, Stuart W. Styles Jan 1992

Broad-Crested Weir Application On 15,000-Acre Farm, Stuart W. Styles

BioResource and Agricultural Engineering

Growers in California have been subjected to increasing pressure to account for water used on the farm due to limited water supplies and increasing energy costs. Water measurement capability provides for equitable distribution of assigned costs and enables effective water management to be accomplished. Broad-crested weirs are proven water measurement devices, especially when applied to on-farm applications. The broad-crested weirs and published data were developed by the USDA Agricultural Research Service in Phoenix, Arizona. This paper is a discussion of an application of these weirs.

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Tailwater Recovery Demonstration Program Study, Doug Welch, Tim O'Halloran, Stuart Styles Jan 1991

Tailwater Recovery Demonstration Program Study, Doug Welch, Tim O'Halloran, Stuart Styles

BioResource and Agricultural Engineering

No abstract provided.

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Spray Drift Reduction With Shrouded Boom Sprayers, Ronald J. Fehringer, Richard Cavaletto Jun 1990

Spray Drift Reduction With Shrouded Boom Sprayers, Ronald J. Fehringer, Richard Cavaletto

BioResource and Agricultural Engineering

Downwind drift was measured from a standard boom sprayer and a shrouded boom sprayer. Using 8002 flat fan nozzles, the hooded sprayer provided a 180 to 275% reduction in drift. The effectiveness of the shroud is dependent upon the spray droplet spectrum.

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Water Seepage From Unlined Ditches And Reservoirs, Nigel W.T. Quinn, Richard B. Smith, Charles M. Burt, Tracy S. Slavin, Stuart W. Styles, Amir Mansoubi Nov 1989

Water Seepage From Unlined Ditches And Reservoirs, Nigel W.T. Quinn, Richard B. Smith, Charles M. Burt, Tracy S. Slavin, Stuart W. Styles, Amir Mansoubi

BioResource and Agricultural Engineering

Seepage losses in the San Joaquin Valley's Westlands Water Districts were estimated at 27,000 acre-feet a year, or about 2% of the district's water supply. Ditch configuration and construction techniques appear to influence seepage rates.

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Guarding Against Machine Hazards, R. A. Cavaletto Dec 1986

Guarding Against Machine Hazards, R. A. Cavaletto

BioResource and Agricultural Engineering

Successful guarding strategies requires knowledge of machine functions, the physical and psychological characteristics of man, and the their interactions. Machine hazards are identified along with recognized guarding methods. Material is included that could be used to teach this subject (case study, prob!em set, glossary}.

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