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Showing 1 to 6 of 6 for “"insect resistance management"”.
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A Study of Neonicotinoid Seed Treatments in Bt Maize: Insect Resistance Management, Efficacy, and Environmental Fate
… maize, Zea mays L. (Poaceae), that produces insecticidal toxins by way of genes derived from Bacillus thuringiensis (Bt), occupies more than 75% of maize acreage. Among a variety of secondary pests targeted by NSTs, the primary soil-dwelling pest targeted by Bt maize is the western corn …
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Inheritance, fitness costs, and potential mechanisms of resistance for western corn rootworm larvae surviving Bt corn
… virgifera virgifera LeConte, has developed resistance to most control tactics used to manage it. Transgenic corn varieties that express insecticidal proteins from the bacterium Bacillus thuringiensis Berliner (Bt), cause mortality to target pests when ingested. In an attempt to delay …
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Field-evolved resistance to Cry3Bb1 corn by the western corn rootworm: Investigations of resistance, emergence, node-injury ratings, and fitness
… western corn rootworm has repeatedly developed resistance to management techniques such as crop rotation (by ovipositing in non-corn crops) and some conventional insecticides, which supports the expectation that evolution of resistance by the western corn rootworm is the main threat to the …
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Modeling insect resistance to transgenic corn and cowpea
… crops covered over 66 million hectares in 2011. Insect resistance management (IRM) is implemented to protect the efficacy of commercial transgenic crops expressing Bacillus thuringiensis toxins because the benefits of the pest susceptibility to Bt toxins is considered as a common good. Simulation …
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The movement behavior and reproductive ecology of western corn rootworm beetles (coleoptera: chrysomeliae) in Bt cornfields with structured and seed blend refuges
… thuringiensis Berliner) corn hybrids expressing insecticidal Cry proteins since 2003. To slow the evolution of resistance to Cry proteins, the Environmental Protection Agency mandated an insect resistance management (IRM) plan requiring the planting of non-Bt refuges as structured blocks or …
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Western corn rootworm (Coleoptera: Chrysomelidae; Diabrotica virgifera virgifera LeConte) emergence and abundance in transgenic cornfields with structured and seed blend refuges
… for a decade. To delay western corn rootworm resistance to Bt toxins, growers must plant a non-Bt “refuge” in each Bt cornfield. This allows susceptible larvae to develop without exposure to the Bt toxin(s). Matings between susceptible adults and potentially resistant adults developing on Bt …