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| Registros recuperados: 39 | |
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| Fernandez-Cornejo, Jorge; Spielman, David J.. |
| The paper presents a model developed to examine the effects of industry concentration on market power and cost efficiency in the seed industry. In addition, the paper presents preliminary measures of the relative strengths of these effects for the case of the U.S. corn seed industry over the past 3 decades. The model uses conjectural elasticities and is estimated using data collected from USDA sources. The empirical results allow us to distinguish between the market power and cost effects of concentration, and to ascertain the tradeoff between the cost efficiency and market power resulting from higher concentration in the corn seed industry. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Marketing. |
| Ano: 2002 |
URL: http://purl.umn.edu/19877 |
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| Fernandez-Cornejo, Jorge; Alexander, Corinne E.; Goodhue, Rachael E.. |
| Controversy over the use of genetically engineered (GE) crops may have induced some farmers to disadopt these seeds, making a traditional diffusion model inappropriate. In this study, we develop and estimate a dynamic diffusion model, examine the diffusion paths of GE corn, soybeans, and cotton, predict the adoption of those crops over the next two years, and explore the main determinants of the diffusion rate. Our estimates indicate that future growth of Bt crops will be slower or negative, depending mainly on the infestation levels of the target pests. Adoption of herbicide-tolerant soybeans and cotton will continue to increase, unless consumer sentiment in the United States changes radically. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 2002 |
URL: http://purl.umn.edu/31479 |
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| Shoemaker, Robbin A.; Harwood, Joy L.; Day-Rubenstein, Kelly A.; Dunahay, Terry; Heisey, Paul W.; Hoffman, Linwood A.; Klotz-Ingram, Cassandra; Lin, William W.; Mitchell, Lorraine; McBride, William D.; Fernandez-Cornejo, Jorge. |
| Agricultural biotechnology has been advancing very rapidly, and while it presents many promises, it also poses as many questions. Many dimensions to agricultural biotechnology need to be considered to adequately inform public policy. Policy is made more difficult by the fact that agricultural biotechnology encompasses many policy issues addressed in very different ways. We have identified several key areas agricultural research policy, industry structure, production and marketing, consumer issues, and future world food demand where agricultural biotechnology is dramatically affecting the public policy agenda. This report focuses on the economic aspects of these issues and addresses some current and timely issues as well as longer term issues. |
| Tipo: Report |
Palavras-chave: Biotechnology; Economics; Adoption; Patents; Research policy; Markets; Market segmentation; Identity preservation; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2001 |
URL: http://purl.umn.edu/33735 |
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| Payne, Tim; Fernandez-Cornejo, Jorge; Daberkow, Stan G.. |
| The likelihood of adopting corn rootworm (CRW) Bt seed technology was analyzed using an ordered logit model. Data used to estimate the model came from USDAs 2001 Agricultural Resource Management Survey. Statistically significant variables include operator age, farm type, farm size, rootworm loss and current treatment for rootworm, off farm labor, and Bt technology for corn borer. The likelihood of adoption was not related to crop rotation, tillage system, new variant CRW region, or education. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2003 |
URL: http://purl.umn.edu/35983 |
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| Fernandez-Cornejo, Jorge; McBride, William D.. |
| Adoption of genetically engineered crops with traits for pest management has risen dramatically since their commercial introduction in the mid-1990's. The farm-level impacts of such crops on pesticide use, yields, and net returns vary with the crop and technology examined. Adoption of herbicide-tolerant cotton led to significant increase in yields and net returns, but was not associated with significant changes in herbicide use. On the other hand, increase in adoption of herbicide-tolerant soybeans led to small but significant increases in yields, no changes in net returns, and significant decreases in herbicide use. Adoption of Bt cotton in the Southeast significantly increased yields and net returns and significantly reduced insecticide use. |
| Tipo: Report |
Palavras-chave: Biotechnology; Genetic engineering; Pest management; Field crops; Input traits; Crop Production/Industries. |
| Ano: 2000 |
URL: http://purl.umn.edu/33931 |
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| Nehring, Richard F.; Martin, Andrew; Fernandez-Cornejo, Jorge; Hallahan, Charles B.; Vialou, Alexandre; Wechsler, Seth James; Grube, Arthur. |
| This paper presents findings on the use of HT corn and quality-adjusted herbicide use for 12 key corn producing states using a panel data set for 1986-2008. Our preliminary findings indicate an insignificant impact of HT corn on herbicide use, conditioning or accounting for HT corn with other important drivers of corn herbicide use: HT soy, corn output price, glyphoste price, nonherbicide glyponsate price, and percentage of continuous corn and low-till corn. However, we find a positive and significant impact of HT corn on herbicide use in selected states, using regional interaction terms. We use econometric techniques to avoid spurious regression results. Other preliminary runs indicated that the results hold when running the US and regional interactions... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: HT-corn; Herbicides; Weed resistance; Glyphosate; Corn; Environmental Economics and Policy; Farm Management; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/103369 |
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| Ollinger, Michael; Fernandez-Cornejo, Jorge. |
| This paper examines the impact of pesticide regulation on the number of new pesticide registrations and pesticide toxicity. Results suggest that regulation adversely affects new pesticide introductions but encourages the development of pesticides with fewer toxic side effects. The estimated regression model implies that a 10% increase in regulatory costs (about $1.5 million per pesticide) causes a 5% reduction in the number of pesticides with higher toxicity. |
| Tipo: Journal Article |
Palavras-chave: Agribusiness. |
| Ano: 1998 |
URL: http://purl.umn.edu/31508 |
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| Fernandez-Cornejo, Jorge. |
| Radial and nonradial measures of technical efficiency are calculated empirically for Florida vegetable farms using DEA (data envelopment analysis) techniques. Use of the nonradial measures to calculate overuse of chemical inputs by inefficient farmers is demonstrated and the potential for reduced environmental loading of pesticides and fertilizers by improving efficiency is evaluated. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1994 |
URL: http://purl.umn.edu/31322 |
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| Registros recuperados: 39 | |
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