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| Elbakidze, Levan; Lu, Liang; Eigenbrode, Sanford. |
| This study examines the effects of climatic conditions on interactions among pea and lentil yields, pea aphid Acyrthosiphon pisum (Harris) infestations, and outbreaks of PEMV (Pea enation mosaic) and BLRV (Bean leaf roll) viruses in the Palouse region of easternWashington. The study analytically and empirically evaluates the effects of aphid outbreaks on per acre yields, implicitly including the effects of adopted pest management activities and explicitly taking into account possible effects of climatic conditions on the severity of pea aphid outbreaks. The results show that aphid outbreaks have historically decreased pea and lentil yields by approximately 5% and 7% on average respectively. |
| Tipo: Article |
Palavras-chave: Climate; Pest damages; Yields; Crop Production/Industries; Production Economics; Productivity Analysis. |
| Ano: 2011 |
URL: http://purl.umn.edu/119177 |
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| Lu, Liang; Elbakidze, Levan. |
| In this paper, we examine conditional, forecast-based dynamic pest management in agricultural crop production given stochastic pest infestations and stochastic climate dynamics throughout the growing season. Using stochastic optimal control we show that correlation between forecast error for climate prediction and forecast error for pest outbreaks can be used to improve pesticide application efficiency. In the general setting, we apply modified Hamiltonian approach to discuss the steady state equilibrium. Given specific functional forms, a closed form solution can be found for the stochastic optimal control problem. Moreover, we find conditions for model parameters so that the optimal pesticide usage path will be monotonically increasing or decreasing in... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Pest Management; Stochastic Optimal Control; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/103655 |
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