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	Provedor de dados 31 (1) Autor Babcock, Bruce A. (1) Yu, Tian (1) Palavra-chave Corn (1) Crop Production/Industries (1) Crop insurance rates (1) Drought tolerance (1) Productivity Analysis (1) Risk and Uncertainty (1) Soybean (1) Yield risk (1) Mais... Tipo do documento Working or Discussion Paper (1) Ano 2009 (1) País United States (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Are U.S. Corn and Soybeans Becoming More Drought Tolerant? 31 Yu, Tian; Babcock, Bruce A.. An objective drought index that measures the dry and hot conditions adversely affecting crop yields is used in a regression analysis to test whether corn and soybeans have become more drought tolerant. Results indicate that corn yield losses, whether measured in quantity terms or as a percentage of mean yield, have decreased. The null hypothesis that the absolute level of soybean yield losses due to drought has not changed cannot be rejected. But yield losses in percentage terms have decreased over time. Because drought is the primary cause of yield loss in the U.S. crop insurance program and because U.S. crop insurance rates assume that percentage of yield losses are constant over time, these results indicate that U.S. crop insurance rates in the Corn... Tipo: Working or Discussion Paper Palavras-chave: Corn; Crop insurance rates; Drought tolerance; Soybean; Yield risk; Crop Production/Industries; Productivity Analysis; Risk and Uncertainty. Ano: 2009 URL: http://purl.umn.edu/54147 Registros recuperados: 1 Primeira ... 1 ... Última

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