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| Registros recuperados: 39 | |
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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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| 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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| Fernandez-Cornejo, Jorge. |
| This paper develops a methodology to calculate the impact of integrated pest management (IPM) on pesticide use, yields, and farm profits. The methodology is applied to the IPM adoption among fresh market tomato producers in eight states. The method is of general applicability. It accounts for self-selectivity and simultaneity, and the pesticide demand and yield equations are theoretically consistent with a profit function. The results support the notion that fresh market tomato growers who adopt IPM for insects and diseases apply significantly less insecticides and fungicides, respectively, than do those who do not adopt IPM; IPM adoption has an insignificant effect on yields and a small effect on profits. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1996 |
URL: http://purl.umn.edu/31416 |
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| Nehring, Richard F.; Fernandez-Cornejo, Jorge. |
| This paper estimates returns to scale and technical efficiency of corn farms following an input distance function approach and compares the relative performance of farm operator households with and without off-farm wages and salaries. We use 1995-2003 USDA data. The input distance function results suggest that off-farm outputs and inputs can be modeled in a multi-activity framework, which materially alter performance measures in the Corn Belt. We find that off-farm income boosts scale and technical efficiency of smaller operations. We also find that the number of hours worked off-farm by the spouse contributes to a higher technical efficiency. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm Management. |
| Ano: 2005 |
URL: http://purl.umn.edu/19566 |
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| Fernandez-Cornejo, Jorge; Mishra, Ashok K.; Nehring, Richard F.; Hendricks, Chad; Southern, Malaya; Gregory, Alexandra. |
| The economic well-being of most U.S. farm households depends on income from both onfarm and off-farm activities. Consequently, for many farm households, economic decisions (including technology adoption and other production decisions) are likely to be shaped by the allocation of managerial time among such activities. While time allocation decisions are usually not measured directly, we observe the outcomes of such decisions, such as onfarm and off-farm income. This report finds that a farm operator’s off-farm employment and off-farm income vary inversely with the size of the farm. Operators of smaller farm operations improve their economic performance by compensating for the scale disadvantages of their farm business with more off-farm involvement.... |
| Tipo: Report |
Palavras-chave: Off-farm income; Farm households; Economic performance; Managerial time; Scale economies; Scope economies; Technical efficiency; Technology adoption; Farm size; Agricultural Finance; Farm Management. |
| Ano: 2007 |
URL: http://purl.umn.edu/7234 |
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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; Nehring, Richard F.; Erickson, Kenneth W.. |
| This paper examines how off-farm work affects the economic performance of crop and (selected) livestock farms. It estimates returns to scale and technical efficiency following an input distance function approach and compares the relative performance of dairy and corn farm operator households with and without off-farm work. We use farm-level data from the USDA's ARMS survey for 1996-2005. The impact of off-farm work on scale and technical efficiency is examined from two viewpoints: first, the effect of off-farm work on the scale and technical efficiency of the farm business in the production of traditional commodities (farm-level perspective); second, the impact of off-farm work on scale and technical efficiency at the household level, considering both... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm Management; Productivity Analysis. |
| Ano: 2007 |
URL: http://purl.umn.edu/9904 |
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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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| 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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| Registros recuperados: 39 | |
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