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	Provedor de dados AgEcon (14) Autor Huang, Jikun (2) Isengildina-Massa, Olga (2) Ma, Hengyun (2) Rae, Allan N. (2) Black, J. Roy (1) Bransby, David (1) Dahlgran, Roger A. (1) Duffy, Patricia A. (1) Goddard, Ellen W. (1) Gollin, Douglas (1) Gomez, Jennifer K. (1) Good, Darrel L. (1) Graybeal, Dale K. (1) Irwin, Scott H. (1) Kim, Hanho (1) Kim, Jae-Kyung (1) MacDonald, Stephen (1) Madai, Hajnalka (1) Mkhabela, Thulasizwe S. (1) Nabradi, Andras (1) Mais... Palavra-chave Q100 (14) Livestock Production/Industries (5) Agribusiness (3) Crop Production/Industries (3) Q110 (3) Q130 (3) Q160 (3) Agricultural and Food Policy (2) China (2) Consumer/Household Economics (2) D240 (2) Demand and Price Analysis (2) Food Consumption/Nutrition/Food Safety (2) Q120 (2) Q180 (2) Q190 (2) Technical efficiency and progress (2) Total factor productivity (2) A220 (1) Adjusted panel data (1) Mais... Tipo do documento Conference Paper or Presentation (6) Journal Article (4) Working or Discussion Paper (3) Report (1) Ano 2011 (1) 2010 (1) 2009 (2) 2008 (3) 2006 (1) 2005 (2) 2004 (3) 2000 (1) Mais... País United States (14) Idioma Inglês (14)		Registro completo Provedor de dados:  AgEcon País:  United States Título:  VARIATION IN MARGINAL RESPONSE TO NITROGEN FERTILIZER BETWEEN LOCATIONS Autores:  Graybeal, Dale K. Data:  2003-06-09 Ano:  2000 Palavras-chave:  Bootstrap Corn yield Marginal product Nitrogen fertilizer Nonlinear regression Crop Production/Industries C200 C150 Q100 Resumo:  A logistic growth equation with time and location varying parameters was used to model corn response to applied nitrogen. A nonlinear dummy-variable regression model provided a parsimonious representation of site and time effects on parameter values. The model was used to test for the equality of the mean marginal product of nitrogen fertilizer between locations on the coastal plain of North Carolina. Monte Carlo simulation and bootstrap simulation were used to construct finite sample covariance estimates. Results support rejection of the hypothesis that mean marginal products are equal when nitrogen is applied at 168 kg/ac. A comparison of bootstrapped errors and asymptotic errors suggests that results based on asymptotic theory are fairly reliable in this case. Tipo:  Journal Article Idioma:  Inglês Identificador:  9415 http://purl.umn.edu/15502 Editor:  AgEcon Search Relação:  Journal of Agricultural and Applied Economics>Volume 32, Number 02, August 2000 Formato:  10 application/pdf Fechar

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