Effects of Metarhizium anisopliae, Bacillus thuringiensis andnew chemistry insecticide on the mortality and pupation of field populationsof Helicoverpa armigera Hübner (Lepidoptera: Noctuidae)

Abstract: Two dose rates of Bacillus thuringiensis (0.5, 1μg g-1), one dose rate of Metarhiziumanisopliae (1.3×106 conidia ml-1) and chlorantraniliprole (0.01ppm) each were applied alone andin combination against second larval instar of the tomato fruitworm Helicoverpa armigeraHübner. The overall results showed that all the treatments gave significant control ofH. armigera, however, the population from Gujranwala proved most tolerant and of Rawalpindiwas highly susceptible.