Abstract:Fourth instar larvae of Spodoptera littoralis (Boisd) of susceptible, Behera, Dokahlia, Gharbeia, Kafr-El-Sheikh, Sharkeia and Fayoum, Governorates strains were tested in the laboratory. Tests were carried out using dipping technique with three organophosphate and three carbamate insecticides. Treatments were done before and after spraying programs in the fields of these areas. Summerized data in general reported that the results of LC50 levels after spraying programs were higher than those before spraying.Wit… Show more
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