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The biopesticides based on fungus Metarhizium anisopliae and bacteria Bacillus thringiensis (Bt) were used on stem borer and leaf folder of rice, which have reduced the population of these pests effectively both in laboratory and in the field. In laboratory bioassays CAMB biopesticides were very useful on insect larvae of Helicoverpa armigera. By using the combination of fungal and bacterial formulation the increase in mortality was studied and it was 100% after 96 h. In the field trials a significant effect on stem borer and leaf folder was observed. On the basis of these results, biopesticides can safely be recommended for the control of rice pests with no harmful effect on its predators as in case with chemical pesticides.
