Toxicological Studies On Cotton Leafworm Spodoptera Littoralis Boisd

The present investigation aimed to study the fllowing points ovicidal action of different insecticides using recommended doses under laboratory and field conditions, susceptibility of S.Littoralis eggs and larvae to different insecticides, the effect of eggs or larval treatment with sublethal doses of permethrin cypermethrin and chlorpyrifos on the biology of the cotton leafworm in two successive generations.