Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados AgEcon (5) Autor Wechsler, Seth James (5) Fernandez-Cornejo, Jorge (4) Nehring, Richard F. (3) Grube, Arthur (2) Hallahan, Charles B. (2) Lambert, Dayton M. (1) Livingston, Michael J. (1) Martin, Andrew (1) Sands, Ronald D. (1) Vialou, Alexandre (1) Mais... Palavra-chave Production Economics (4) Environmental Economics and Policy (3) Farm Management (3) Bt corn (2) Corn (2) Crop Production/Industries (2) Genetically engineered corn (2) Herbicides (2) Insecticide use (2) Agricultural and Food Policy (1) Biotechnology (1) Conservation tillage (1) Corn yields. technology adoption. (1) Genetically engineered crops (1) Glyphosate (1) HT-corn (1) Insect resistance (1) Nitrogen (1) Offsets (1) Research and Development/Tech Change/Emerging Technologies (1) Mais... Tipo do documento Conference Paper or Presentation (4) Presentation (1) Ano 2012 (1) 2011 (2) 2010 (2) País United States (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Revisiting the Impact of Bt Corn Adoption by U.S. Farmers AgEcon Fernandez-Cornejo, Jorge; Wechsler, Seth James. This study examines the impact of adopting Bt corn on farm profits, yields, and insecticide use. The study employs an econometric model that corrects for self-selection and simultaneity. The model is estimated using nationwide farm-level survey data for 2005. Regression analysis confirms that Bt adoption is associated with increased profits, yields and seeding rates. However, the results of this analysis suggest that Bt adoption is not significantly related to insecticide use. This result appears to be related to the fact that insect infestation levels were lower in 2005 than they were in earlier years. Tipo: Conference Paper or Presentation Palavras-chave: Genetically engineered corn; Insect resistance; Bt corn; Insecticide use; Technology adoption; Yields; Production Economics; Research and Development/Tech Change/Emerging Technologies. Ano: 2011 URL: http://purl.umn.edu/103327 Conservation Tillage, Pesticide Use, and Biotech Crops in the U.S.A. AgEcon Fernandez-Cornejo, Jorge; Hallahan, Charles B.; Nehring, Richard F.; Wechsler, Seth James; Grube, Arthur. This paper presents the first part of an ongoing project whose objective is to present a long term relationship between conservation tillage, adoption of GE crops and pesticide use for major crops in the United States. In addition, the project aims to provide some innovative tests on causality using a panel data set. This paper presents preliminary results for soybeans. Tipo: Conference Paper or Presentation Palavras-chave: Conservation tillage; Biotechnology; Genetically engineered crops; Soybeans; Herbicides; Environmental Economics and Policy; Farm Management; Production Economics. Ano: 2010 URL: http://purl.umn.edu/60941 Fifteen Years Later: Examining the Adoption of Bt Corn Varieties by U.S. Farmers AgEcon Fernandez-Cornejo, Jorge; Wechsler, Seth James. This study presents recent results on the impact of adopting Bt corn on farm profits, yields, and seed and insecticide use. The study employs an econometric model that corrects for self-selection and simultaneity and uses farm-level survey data for 2010. Results confirm previous findings that Bt adoption is associated with increased profits and yields. However the Bt adoption is not significantly related to insecticide use as infestation levels in 2010 are very low and 90 percent of the farmers in the sample did not use insecticides at all. Tipo: Presentation Palavras-chave: Genetically engineered corn; Bt corn; Insecticide use; Corn yields. technology adoption.; Crop Production/Industries; Farm Management; Production Economics. Ano: 2012 URL: http://purl.umn.edu/124257 Impact of GE Crop Adoption on Quality-Adjusted Herbicide Use in U.S. Corn Production AgEcon 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 The Cost of Increasing Adoption of Beneficial Nutrient-Management Practices AgEcon Lambert, Dayton M.; Livingston, Michael J.; Nehring, Richard F.; Sands, Ronald D.; Wechsler, Seth James. We estimate the cost of offsets tied to reductions in the use of nitrogen on U.S. cornfields under the proposed American Clean Energy and Security Act. Tipo: Conference Paper or Presentation Palavras-chave: Offsets; Nitrogen; Corn; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy. Ano: 2010 URL: http://purl.umn.edu/60946 Registros recuperados: 5 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco