Coccinella undecimpunctata is one of the most common indigenous
predators of sucking insect pests such as aphids, mealybugs, whiteflies
on different crops like cotton, sunflower, fruit plants and vegetables.
Effect of some commonly used insecticides like imidacloprid,
acetamiprid, cypermethrin, deltamethrin and profenofos were tested for
their residual effects using glass vial method and treated leaves for
the residual effects of insecticides. Mortality of adult C.
undecimpunctata at 24, 48 and 72 hours ranging from 50-91% and 10-78 %
was observed in glass vial and treated leaves methods, respectively.
Profenofos was the most toxic insecticide in both methods whereas
imidacloprid caused the lowest mortality. Field sprayed leaves exposure
proved imidacloprid the least toxic insecticide. In residual film
method, acetamiprid was the least toxic but most toxic in glass vial
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