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Registros recuperados: 42
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Adoption of Best Management Practices to Control Weed Resistance By Cotton, Corn, and Soybean Growers AgEcon
Frisvold, George B.; Hurley, Terrance M.; Mitchell, Paul D..
This study examined adoption of ten best management practices (BMPs) to control weed resistance to herbicides. Using data from a survey of 1,205 U.S. cotton, corn, and soybean growers, count data models were estimated to explain the total number of practices frequently adopted. Ordered probit regressions were used to explain the frequency of individual BMP adoption. Growers practicing a greater number of BMPs frequently (a) had more education, but less farming experience; (b) grew cotton, (c) expected higher yields relative to the county average; and (d) farmed in counties with a lower coefficient of variation (CV) for yield of their primary crop. Yield expectations and variability were significant predictors of the frequency of adoption of individual...
Tipo: Conference Paper or Presentation Palavras-chave: Weeds; Herbicide; Resistance management; Corn; Cotton; Soybeans; Adoption; Crop Production/Industries; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q12; Q16.
Ano: 2009 URL: http://purl.umn.edu/49432
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ADVERSE SELECTION, MORAL HAZARD, AND GROWER COMPLIANCE WITH BT CORN REFUGE AgEcon
Mitchell, Paul D.; Zhu, En (John); Hurley, Terrance M..
This paper develops a principal-agent model of farmer compliance with Bt corn refuge requirements intended to manage the evolution of resistance to the Bt toxin by insect pests. The model endogenizes the price of the technology, the audit rate, and the fine imposed on non-complying farmers when farmer willingness to pay for Bt corn and compliance effort is private information.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2004 URL: http://purl.umn.edu/20123
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AN ANALYSIS OF OCCUPATIONAL HEALTH IN PORK PRODUCTION AgEcon
Hurley, Terrance M.; Kliebenstein, James B.; Orazem, Peter F..
The rapid expansion of large-scale pork production has been accompanied by increasing concerns regarding potential detrimental consequences of environmental hazards on the health of producers. This study makes use of health indicators obtained from attendees at the World Pork Expo between 1991 and 1995 to evaluate the impact of pork production generally and of confinement production, specifically, on producer health. The analysis expands existing studies because the larger number of participants allows for detailed analysis, both nonfarmers and non-pork farmers are used as controls, both objective as well as self-reported health measures are considered, and personal characteristics such as height, weight, age, gender, smoking habits, and years of exposure...
Tipo: Working or Discussion Paper Palavras-chave: Labor and Human Capital; Livestock Production/Industries.
Ano: 1996 URL: http://purl.umn.edu/18278
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BIOTECHNOLOGY AND PEST RESISTANCE: AN ECONOMIC ASSESSMENT OF REFUGES AgEcon
Hurley, Terrance M.; Babcock, Bruce A.; Hellmich, Richard L..
Transgenic crops offer farmers a new and effective pest control option. However, the wide spread adoption of these crops could lead to a resistant pest population. This paper demonstrates how a pest refuge can be used to maximise the value of farm income in a dynamic model with genetic foundations.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 1998 URL: http://purl.umn.edu/21000
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Biotechnology and Pest Resistance: An Economic Assessment of Refuges AgEcon
Hurley, Terrance M.; Babcock, Bruce A.; Hellmich, Richard L..
Biologists now engineer transgenic crop varieties that express proteins that are toxic to a variety of common agricultural pests. These transgenic crops offer farmers a new tool for effectively managing pests that reduce yields and increase production costs. However, the concern over pest resistance to these toxins has prompted the EPA to require resistance management plans. Seed companies have focused on a high-does refuge plan where farmers are required to plant a constant proportion of cropland in refuge in order to maintain a susceptible pest population. Currently, entomologists recommend 20 to 40% refuge. This paper develops an economic model of pest management with pest resistance to estimate the constant proportion of refuge that maximizes farm...
Tipo: Working or Discussion Paper Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 1997 URL: http://purl.umn.edu/18632
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BT CORN AND INSECT RESISTANCE: AN ECONOMIC ASSESSMENT OF REFUGES AgEcon
Hurley, Terrance M.; Babcock, Bruce A.; Hellmich, Richard L..
Genetically engineered crops offer farmers a new option for controlling pests. The high efficacy of these pesticidal crops, combined with the potential for widespread adoption, has raised concerns that pest resistance may prematurely diminish their value. In response to these concerns, the Environmental Protection Agency requires resistance management plans. Current resistance management plans rely on a high-dose refuge strategy. This analysis extends the current framework for evaluating high-dose refuge strategies to include a measure of agricultural productivity and conventional pesticide use. The economic tradeoff relative to agricultural productivity, conventional pesticide use, and pest resistance is assessed when Bt corn is planted to control...
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 2001 URL: http://purl.umn.edu/31156
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Bt Corn Farmer Compliance with Insect Resistance Management Requirements: Results from the 2002 Minnesota and Wisconsin Farm Polls AgEcon
Buttel, Frederick H.; Merrill, Jeanne; Chen, Lucy; Goldberger, Jessica; Hurley, Terrance M..
The U.S. Environmental Protection Agency (EPA) reregistered Bt corn in 2001 with mandatory Insect Resistance Management (IRM) requirements in order to promote sustainable use by farmers. Since then studies report IRM compliance rates ranging from 80 to 90 percent. Using survey data from Minnesota and Wisconsin, we show that previous compliance rate estimates are likely too high because they do not use a comprehensive measure for compliance. With a more comprehensive measure, we find compliance rates ranging between 60 to 75 percent.
Tipo: Working or Discussion Paper Palavras-chave: Bt corn; Compliance; Insect Resistance Management; Refuge; Crop Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/13659
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CHANGES IN THE STRUCTURE OF WAGES IN THE U.S. PORK INDUSTRY AgEcon
Hurley, Terrance M.; Orazem, Peter F.; Kliebenstein, James B..
Consolidation in the U.S. pork industry continues to reduce the number of operations, while increasing the demand for hired labor. This paper explores how wages have evolved over time by decomposing the increase in wages into a change in the level of wages, human capital, and returns to human capital.
Tipo: Conference Paper or Presentation Palavras-chave: Labor and Human Capital; Livestock Production/Industries.
Ano: 2000 URL: http://purl.umn.edu/21744
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Crop Nutrient Needs Potentially Supplied by Livestock Manure in Iowa, Illinois, and Indiana AgEcon
Wang, Erda; Babcock, Bruce A.; Hurley, Terrance M..
Tipo: Working or Discussion Paper Palavras-chave: Crop Production/Industries; Livestock Production/Industries.
Ano: 1998 URL: http://purl.umn.edu/18476
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DISCUSSANT'S COMMENTS FOR AMERICAN AGRICULTURAL ECONOMICS ASSOCIATION ANNUAL MEETING, SELECTED PAPERS SESSION SP-8W, "PESTICIDES AND ENVIRONMENTAL QUALITY" AgEcon
Hurley, Terrance M..
Studies on the optimal use of pesticides, their disposal, and effects are presented. Papers include: Financing the Disposal of Unwanted Agricultural Pesticides, Lewell F. Gunter and Terence Centner, University of Georgia. Determinants of Pesticide Registration for Food Crops, Claude Courbois, North Carolina State University and International Food Policy Research Institute. A New Measure of Integrated Pest Management - Weed IPM by Corn Producers, Jorge Fernandez-Cornejo and Sharon Jans, USDA/ERS. The Environmental Effects of Adopting IPM Techniques: The Case of Peach Producers,Jennifer Ferraioli and Jorge Fernandez-Cornejo, USDA/ERS.
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 1998 URL: http://purl.umn.edu/21009
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Do Native and Invasive Labels Affect Consumer Willingness to Pay for Plants? Evidence from Experimental Auctions AgEcon
Yue, Chengyan; Hurley, Terrance M.; Anderson, Neil O..
The ultimate objective of commercial horticultural activities is to satisfy the needs of the final consumer. Consumer demand for novel plants drives the ornamental plant industry. Therefore, dispersal of native and invasive horticultural plants can be understood by considering the decisions/choices of consumers who decide which plants to purchase from retailers. In contrast to previous studies on invasive and native plants, this study uses an experimental auction to elicit consumers’ willingness to pay (WTP) for labeled native and invasive attributes. Results from a censored random effect model show that consumers’ WTP for plants decreases when the plants are labeled as invasive and increases when plants are labeled as native. The study finds that...
Tipo: Conference Paper or Presentation Palavras-chave: Native plants; Invasive plants; Willingness to pay; Labeling; Auction; Marketing; Consumer/Household Economics; Demand and Price Analysis.
Ano: 2009 URL: http://purl.umn.edu/49212
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ECONOMIC AND ENVIRONMENTAL EFFECTS ASSOCIATED WITH REDUCING THE USE OF ATRAZINE: AN EXAMPLE OF CROSS-DISCIPLINARY RESEARCH AgEcon
Ribaudo, Marc; Hurley, Terrance M..
Restricting or eliminating the use of atrazine in the Midwest would have important economic consequences for farmers, consumers, and the environment. These consequences can only be evaluated with cooperation between economists and weed scientists. The weed control choice set available to farmers cannot be observed through deductive research. Economists and weed scientists worked together to identify all possible weed control strategies for corn and sorghum in the Midwest and to incorporate them into an economic model. An atrazine ban was found to be the costliest strategy, and a targeted, water-quality based strategy the most cost effective.
Tipo: Journal Article Palavras-chave: Atrazine; Deductive research; Environmental exposure; Herbicides; Inductive research; Welfare; Crop Production/Industries.
Ano: 1997 URL: http://purl.umn.edu/15542
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ECONOMIC EVALUATION OF BT CORN REFUGE INSURANCE AgEcon
Mitchell, Paul D.; Hurley, Terrance M.; Hellmich, Richard L..
The EPA has imposed mandatory refuge requirements for Bt crops to prolong the efficacy of Bt. Growers have no economic incentive to plant the required refuge because refuge crops are on average less productive and more risky. This paper evaluates refuge insurance--insurance that pays indemnities for yield losses on refuge due to insect damage--as a tool to increase grower compliance incentives. We determine actuarially fair insurance premiums, then evaluate the feasibility of private provision of refuge insurance and its impact on grower incentives to comply with refuge requirements. A private market for refuge insurance appears unlikely because our analysis suggests that even a 2% load on the actuarially fair premium makes growers unwilling to buy...
Tipo: Conference Paper or Presentation Palavras-chave: Research and Development/Tech Change/Emerging Technologies; Risk and Uncertainty.
Ano: 2000 URL: http://purl.umn.edu/21757
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Economic Evaluation of Bt Corn Refuge Insurance AgEcon
Mitchell, Paul D.; Hurley, Terrance M.; Hellmich, Richard L..
The EPA has imposed mandatory refuge requirements for Bt crops to prolong the efficacy of Bt. Growers have no economic incentive to plant the required refuge because refuge crops are on average less productive and more risky. This paper evaluates refuge insurance—insurance thatpays indemnities for yield losses on refuge due to insect damage—as a tool to increase grower compliance incentives. We determine actuarially fair insurance premiums, then evaluate the feasibility of private provision of refuge insurance and its impact on grower incentives to comply with refuge requirements. A private market for refuge insurance appears unlikely because our analysis suggests that even a 2 percent load on the actuarially fair premium makes growers unwilling to buy...
Tipo: Working or Discussion Paper Palavras-chave: Bt corn; Crop insurance; Refuge crops; Pest-resistant management; European corn borer; Yield loss; Crop Production/Industries; Risk and Uncertainty.
Ano: 2000 URL: http://purl.umn.edu/18565
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ESTIMATING SITE-SPECIFIC NITROGEN CROP RESPONSE FUNCTIONS: A CONCEPTUAL FRAMEWORK AND GEOSTATISTICAL MODEL AgEcon
Malzer, Gary L.; Hurley, Terrance M.; Kilian, Bernard.
Confirming the precision agriculture hypothesis for variable rate nitrogen applications (VRA) is challenging. To confront this challenge, researchers have used increasingly sophisticated statistical models to estimate and compare site-specific crop response functions (SSCRFs). While progress has been made, it has been hampered by the lack of a conceptual framework to guide the development of appropriate statistical models. This paper provides such a framework and demonstrates its utility by developing a heteroscedastic, fixed and random effects, geostatistical model to test if VRA can increase nitrogen returns. The novelty of the model is the inclusion of site, spatial, treatment, and treatment strip heteroscedasticity and correlation. Applied to data...
Tipo: Working or Discussion Paper Palavras-chave: Crop Production/Industries.
Ano: 2004 URL: http://purl.umn.edu/14111
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ESTIMATING SITE-SPECIFIC NITROGEN CROP RESPONSE FUNCTIONS: A CONCEPTUAL FRAMEWORK AND GEOSTATISTICAL MODEL AgEcon
Hurley, Terrance M.; Malzer, Gary L.; Kilian, Bernard.
Confirming the precision agriculture hypothesis for variable rate nitrogen applications (VRA) has proven challenging. To confront this challenge, researchers have begun to use increasingly sophisticated statistical models to estimate and compare site-specific crop response functions. While progress has been made, we believe it has been hampered by the lack of a clear conceptual framework to guide and motivate the development of appropriate models and methods. The purpose of this paper was to provide such a framework, while demonstrating its utility. The framework was used to develop a heteroscedastic, fixed and random effects, geostatistical model to test the potential for VRA to increase nitrogen returns. The model was implemented with data collected...
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/21950
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Estimating the Benefits of Bt Corn and Cost of Insect Resistance Management Ex Ante AgEcon
Hurley, Terrance M.; Langrock, Ines; Ostlie, Kenneth.
This paper estimates farmer benefits for corn rootworm (CRW) active Bt corn and costs of complying with Environmental Protection Agency insect resistance management requirements. The estimates are obtained from farmer survey data that were collected in Minnesota in 2002, just prior to the commercial releases of CRW Bt corn. Benefit estimates range from $14 to $33.4 million, while compliance cost estimated range from $3.5 to $8.7 million depending on whether or not CRW Bt corn also controlled the European corn borer and whether of not it was approved for sale in major export markets.
Tipo: Journal Article Palavras-chave: Bt corn; Compliance costs; Corn rootworm; Insect resistance management; Willingness to pay; Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/8619
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Estimating the Potential Value of Variable Rate Nitrogen Applications: A Comparison of Spatial Econometric and Geostatistical Models AgEcon
Hurley, Terrance M.; Oishi, Kikuo; Malzer, Gary L..
Site-specific crop response functions (SSCRFs) are useful for estimating the value of variable rate nitrogen applications (VRA), but appropriate statistical models are necessary. Problems estimating SSCRFs using experimental field data include region, spatial, treatment, and strip dependent heteroskedasticity and correlation. We develop a spatial autoregressive error (SARE) model for dealing with these problems and compare results with previous analysis based on a geostatistical (GEO) model. VRA value estimates for the two models differ notably for 1995 data from Southern Minnesota. Furthermore, findings show that the results of a comparison of model performance are location specific.
Tipo: Journal Article Palavras-chave: Geostatistics; Precision agriculture; Site-specific crop response functions; Spatial autoregressive error; Variable rate nitrogen application; Crop Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/31210
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Evidence of Temporal Variation in Site-Specific Crop Response to Fertilizer Inputs AgEcon
Oishi, Kikuo; Hurley, Terrance M.; Malzer, Gary L..
Replaced with revised version of paper 07/27/06.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/21140
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FARMER DEMAND FOR CORN ROOTWORM BT CORN: DO INSECT RESISTANCE MANAGEMENT GUIDELINES MATTER? AgEcon
Langrock, Ines; Hurley, Terrance M.; Ostlie, Kenneth.
Farmer adoption of Bt corn and compliance with insect resistance management (IRM) regulations will influence the success of these regulations. The purpose of this paper is to use farmer survey data to estimate the demand for new corn rootworm Bt corn and the cost of complying with proposed IRM regulations.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/22033
Registros recuperados: 42
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