INSECTICIDES
All insecticides, except Bacillus thuringiensis used in this study were
technical grade (Table 2).The B.t. kurstaki (Btk) strain (16,000 IU/mg wettable
powder) was a commercially formulated product. These insecticides
were dissolved in acetone or DMF (N, N-dimethyl formamide) as
stock solutions and Bt wettable powder was dissolved in water.