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	Provedor de dados 31 (2) Autor Nalley, Lawton Lanier (2) Barkley, Andrew P. (1) Chumley, Forrest G. (1) Lyman, Nathaniel (1) Moldenhauer, Karen A. (1) Palavra-chave Economic impact of technological change (2) O13 (2) Q16 (2) Agribusiness (1) Farm Management (1) Just and Pope (1) Multiplicative heteroscedasticity (1) O32 (1) Productivity Analysis (1) Public rice breeding (1) Public wheat breeding (1) Research and Development/Tech Change/Emerging Technologies (1) Wheat yield (1) Mais... Tipo do documento Journal Article (2) Ano 2011 (1) 2008 (1) País United States (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The Impact of the Kansas Wheat Breeding Program on Wheat Yields, 1911–2006 31 Nalley, Lawton Lanier; Barkley, Andrew P.; Chumley, Forrest G.. This paper quantifies advances of the Kansas Agricultural Experiment Station (KAES) wheat breeding program for two time periods: (1) 1911 to 2006 and (2) 1977 to 2006. Using multiple regression, increases in yields of wheat varieties grown in Kansas are quantified, holding growing conditions and other improvements in productivity constant. Differences in KAES variety yields and those released by other public and private breeders are quantified. During the ‘‘new age’’ of wheat breeding (1977–2006), wheat breeding alone is found to have increased yields by 6.182 bushels per acre, or an average increase of 0.206 bushels per year. Tipo: Journal Article Palavras-chave: Wheat yield; Public wheat breeding; Multiplicative heteroscedasticity; Economic impact of technological change; Agribusiness; Farm Management; O13; Q16. Ano: 2008 URL: http://purl.umn.edu/47267 The Genetic and Economic Impact of the University of Arkansas’s Rice Breeding Program: 1983–2007 31 Nalley, Lawton Lanier; Moldenhauer, Karen A.; Lyman, Nathaniel. This study estimates the proportion of rice yield increase in University of Arkansas Division of Agriculture’s (UofA) released rice cultivars that are attributable to genetic improvements through the University’s breeding program. Test plot data from eight UofA experiment stations were used to quantify the yield increases and potential yield growth decreases over time. In addition to quantifying the yield and yield variance evolution at the UofA, this study also calculates the economic benefits of the UofA rice breeding program. Results indicated that by releasing modern rice cultivars, the UofA rice breeding program increased average producer yield by 0.68 bu/ac annually. During the last decade, 1997–2007, the average annual economic benefits were 34.3... Tipo: Journal Article Palavras-chave: Economic impact of technological change; Just and Pope; Public rice breeding; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; O13; O32; Q16. Ano: 2011 URL: http://purl.umn.edu/100653 Registros recuperados: 2 Primeira ... 1 ... Última

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