Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados AgEcon (2) Autor Beyers, Lindie (1) Bravo-Ureta, Boris E. (1) Quiroga, Ricardo E. (1) Solis, Daniel (1) Thirtle, Colin G. (1) Palavra-chave Stochastic Frontiers (2) Bt cotton (1) C21 (1) Central America (1) Crop Production/Industries (1) D24 (1) Efficiency (1) KwaZulu-Natal (1) Land Economics/Use (1) O13 (1) Q12 (1) Research and Development/Tech Change/Emerging Technologies (1) Soil Conservation (1) Switching Regression (1) Technical Efficiency (1) Mais... Tipo do documento Conference Paper or Presentation (2) Ano 2006 (1) 2003 (1) País United States (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Technical Efficiency and Adoption of Soil Conservation in El Salvador and Honduras AgEcon Solis, Daniel; Bravo-Ureta, Boris E.; Quiroga, Ricardo E.. A household-level switching regression model is implemented to examine potential selectivity bias for rural households under high and low levels of investments in soil conservation in El Salvador and Honduras. In the presence of selectivity bias, separate stochastic production frontiers are estimated for low and high adopters. The main results indicate that households with higher levels of investments in soil conservation show higher average TE than those with a lower level of investments. Constrains in the rural land and credit markets are likely explanations for these differences. The results also indicate that for farms with lower levels of investments in soil conservation access to credit is a significant factor explaining the sources of inefficiency.... Tipo: Conference Paper or Presentation Palavras-chave: Stochastic Frontiers; Technical Efficiency; Switching Regression; Central America; Soil Conservation; Land Economics/Use; D24; Q12; O13; C21. Ano: 2006 URL: http://purl.umn.edu/25784 CAN GM-TECHNOLOGIES HELP AFRICAN SMALLHOLDERS? THE IMPACT OF BT COTTON IN THE MAKHATHINI FLATS OF KWAZULU-NATAL AgEcon Beyers, Lindie; Thirtle, Colin G.. Analysis of a survey of the 1998-99 and 1999-2000 seasons for the same 100 smallholders in the Makhathini Flats region of KwaZulu-Natal shows that Bt cotton has performed better than other varieties. Having two years of data for the same farmers allows innate efficiency differences, due to factors such as farm size, to be separated from the effects of the new technology, which is not normally possible. Farmers who adopted Bt cotton in 1999-2000 benefited according to all the measures used. Higher yields and lower chemical costs outweighed higher seed costs, giving higher gross margins. These measures showed negative benefits in 1998-99, which conflicts with continued adoption, but stochastic efficiency frontier estimation, which takes account of the... Tipo: Conference Paper or Presentation Palavras-chave: KwaZulu-Natal; Bt cotton; Stochastic Frontiers; Efficiency; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies. Ano: 2003 URL: http://purl.umn.edu/25922 Registros recuperados: 2 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