Gas-propelled aerosols and micronized dusts for control of insects in aircraft. 8. Toxicity of micronized dusts to some greenhouse insects.

When micronized dusts containing Mobam® (benzo[b] thien-4-yl methylcarbamate), chlorpyrifos, or resmethrin were dispersed in separate greenhouses by the release of CO2 they proved to be highly effective against several representative greenhouse insects, including nymphs of citrus mealybugs, Planococcus citri (Risso), adult vegetable leafminers, Liriomyza munda Frick; green peach aphids, Myzus persicae (Sulzer); chrysanthemum aphids, Macrosiphoniella sanborni (Gillette); nymphs of grasshoppers ( Melanoplus spp.), mostly M. differentialis (Thomas); and adult Japanese beetles, Popillia japonica Newman. Mobam killed adults of the greenhouse leaftier, Udea rubigalis (Guenee) and the leaf roller Platynota stultana (Walshingham), but not greenhouse whiteflies, Trialeurodes vaporariorum (Westwood); twospotted spider mites, Tetranychus urticae Koch; or carmine spider mites, T. cinnabarinus (Boisduval). Chlorpyrifos killed susceptible spider mites but not resistant ones and did not kill whiteflies. Resmethrin was highly effective against adult whiteflies and susceptible spider mites.