Susceptibility of Amsacta moorei population against commercial formulations of Bacillus thuringiensis

Bioassays were carried out using Bacillus thuringiensis commercial formulations viz. bactospeine, biobit, biolep, dipel and lipel against neonate, third and fifth instar larvae of Amsacta moorei, collected from Rohtak and Dehradun Districts, India. Dipel was the most effective formulation against neonate of A. moori from both the locations. In case of third instar larvae of A. moorei, highest mean mortality was registered by bactospeine. Differences between neonate and third instar were significant at 5% level. However, third instar and fifth instar did not differ significantly.