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|Title:||Role of Conventional and Novel Insecticides in Integrated Pest Management in Cotton|
|Abstract:||This project was established to look at various aspects of insecticides in cotton and the factors that would directly affect decision making. Helicoverpa spp. are still the primary pests of cotton in Australia. Chemical control available for these pests consisted of a limited selection of conventional insecticides. These insecticides were from key chemical groups still used by the industry include carbamates, organophosphates and synthetic pyrethroids and because of their broad-spectrum activity they significantly disrupt most predators and parasites (Wilson et al., 1998), and in some cases have a negative environmental impact. Frequent chemical spraying resulted in the development of resistance to some of these chemicals by Helicoverpa spp., eg. carbamates and synthetic pyrethroids. To counter resistance issues, new insecticides are being developed and registered for control of Helicoverpa in cotton. This new generation of insecticides are promoted as being more selective, less disruptive to beneficial and therefore more compatible with IPM (Holloway, J., Forrester, N., 1998). Cotton growers now have the choice of selecting from “old” and “new” insecticides when deciding to apply insecticides. Knowing the efficacy of individual insecticides against the target pest species is insufficient to make these decisions. It is also important to have knowledge of how these insecticides impact on other pests, predators and parasitoids. Strategic use of conventional insecticides in an IPM strategy will not only assure their efficacy but also prolong their existence for cotton insect management programs. Therefore, “old” and “new” insecticides should be rotated and placed in a way that they will perform effectively and soundly within the integrated pest management (IPM) and the integrated resistance management (IRM) strategies.|
|Appears in Collections:||2002 Final Reports|
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