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	Provedor de dados AgEcon (1) Autor Mitchell, Paul D. (1) Palavra-chave Crop Production/Industries (1) Damage Control (1) Damage Function (1) Environmental Economics and Policy (1) Functional Response (1) Increasing Returns (1) Pest Economics (1) Risk Reducing Input (1) Mais... Tipo do documento Conference Paper or Presentation (1) Ano 2001 (1) País United States (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última ADDITIVE VERSUS PROPORTIONAL PEST DAMAGE FUNCTIONS: WHY ECOLOGY MATTERS AgEcon Mitchell, Paul D.. Economic analyses of pests typically assume damage is either additively separable from pest free yield or proportional to it. This paper describes the ecological assumptions required for additive and proportional damage functions to demonstrate that both specifications are reasonable. Ecological research supports a proportional damage function for competitive pests such as weeds, while for insect pests the appropriate damage function depends on the level of pest free yield. Theoretical analysis identifies differences between additive and proportional damage functions in terms of the impact of pest control on output variance and the concavity of output in the pest control input. Tipo: Conference Paper or Presentation Palavras-chave: Pest Economics; Damage Function; Damage Control; Risk Reducing Input; Increasing Returns; Functional Response; Crop Production/Industries; Environmental Economics and Policy. Ano: 2001 URL: http://purl.umn.edu/20775 Registros recuperados: 1 Primeira ... 1 ... Última

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