* Division of Agricultural Chemicals, I.A.R.I., New Delhi 110012, India. <jitendrakumar7@yahoo.com; jitendra_7K@rediffmail.com>
Division of Entomology, I.A.R.I., New Delhi 110012, India.
Bacillus thuringiensis is the most widely used bio-pesticide and to make a photo stable product, two UV protectants, ranipal and congo red, were used in the preparation of WDP formulation of B. thuringiensis and were evaluated against Helicoverpa armigera. The optimum concentration of both the UV protectants in formulations were found to be 1% (w/w). Addition of UV protectants had significantly improved the bioefficacy of the WDP formulations. Overall performance of WDP formulation containing 1% (w/w) congo red was superior as compared to ranipal and control.
Bacillus thuringiensis, Helicoverpa armigera, WDP formulation
