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| Harper, Jayson K.; Mjelde, James W.; Rister, M. Edward; Way, Michael O.; Drees, Bastiaan M.. |
| The rice stink bug is a major pest of rice in Texas, causing quality related damage. The previous threshold used for assisting in rice stink bug spray decisions lacked flexibility in economic and production decision variables and neglected the dynamics of the pest population. Using stochastic dynamic programming, flexible economic thresholds for the rice stink bug were generated. The new thresholds offer several advantages over the old, static thresholds, including increased net returns, incorporation of pest dynamics, user flexibility, ease of implementation, and a systematic process for updating. |
| Tipo: Journal Article |
Palavras-chave: Economic thresholds; Dynamic programming; Pest management; Rice; Crop Production/Industries. |
| Ano: 1994 |
URL: http://purl.umn.edu/15411 |
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| Durán Trujillo, Yuridia. |
| El mango es unos de los frutos más consumidos mundialmente y uno de los cultivos más importantes en nuestro país. Las plagas representan un problema importante para este cultivo en Arcelia, en la región de la Tierra Caliente, Guerrero, México; las plagas principales son trips y ácaros, por tal motivo fueron probados los efectos de los plaguicidas imidacloprid, spinosad, azufre y aceite mineral para observar su efecto en la poblaciones de plagas, así como en la calidad del fruto, tratando de desarrollar un método basado en umbrales de de acción de plagas. De acuerdo con lo observado durante los muestreos podemos considerar a Frankliniella invasor Sakimura como el trips que puede causar daño severo por haberse presentado en poblaciones altas, pero también se... |
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Palavras-chave: Plagas; Control químico; Efecto de plaguicidas; Umbral de acción; Pests; Chemical control; Pesticide effect; Economic thresholds; Entomología y Acarología; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1723 |
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| Vazin,F.. |
| The aim of this study was to determine the economic damage threshold of Pigweed redroot for corn regarding its density. An experiment was conducted at the Agriculture Research station of Islamic Azad University branch of Gonabad during 2006. The experiment was carried out as a factorial in a randomized complete block design with three replications. In the experiments, the factors included corn (var. 704) densities of 7.5, 8.5 and 9.5 plants m-2 and pigweed redroot densities of 0, 2, 4, 6 and 8 plants m-2. The increase in Pigweed redroot density, decrease in crop grain and biomass yield components such as ear length, ear diameter, number of grains per row, row number, grain number in ear, grain yield and biological yield of corn, decreased. Also, with an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic thresholds; Weed competition; Pigweed redroot; Corn. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000300003 |
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