Measurement of Biological Activity of Common Pesticides to Spodoptera litura

In order to understand the effects of normal insecticides to Spodoptera litura,the paper investigated the susceptibility of Spodoptera litura to 16 kinds of different insecticides with leaf-dipping method.And the results indicated that Spodoptera litura was highly susceptible to Hexaflumuron and Chlorfluazuron,the LC50 values being 0.701 1 mg/L,1.270 1 mg/L respectively,and low susceptible to Acephate,Triazophos,Dipterex among 16 insecticides.