author(s)
Joshi M, Gaur N and Pandey R

abstract
The present investigation was conducted to test the toxicological impact of chemical pesticides on entomopathogenic fungus. This study reports the in-vitro toxicity of six insecticides (Profenophos 50% EC, Chlorantraniliprole 18.5%SC, Lambda cyhalothrin 4.9% CS, Novaluron 10% EC, Emamectin benzoate 5% WG, Indoxacarb 15.8% EC), four fungicides (Mancozeb 75% WP, Carbendazim 50% WP, Propiconazole 25% EC and Hexaconazole 5% EC) at different concentration for their effect on growth, inhibitory or synergistic effects and spore germination of Beauveria bassiana, Metarhizium anisopliae by growing them on insecticides and fungicides treated media. Profenophos 50% EC was the most toxic insecticide to the linear growth, percent inhibition and spore germination. Some lower concentration (0.5-0.25) were found to be safe for B. bassiana only. Chlorantraniliprole 18.5% SC was found compatible with B. bassiana. Where as in M. anisopliae at different concentration (0.6, 0.3, 0.15, 0.075%) showed detrimental effect on spore germination whereas only at lowest conc. (0.037%), 76.00 percent spore germination was observed. Whereas other Insecticides like Lambda cyhalothrin 4.9% CS, Novaluron 10% EC, Emamectin benzoate 5% WG, Indoxacarb 15.8% EC were found to be compatible with B. bassiana and M. anisopliae. Among all fungicides tested only Mancozeb75% WP proved safe up to some extent at lower concentrations (0.5 and 0.25%) to test fungi with average amount of spore germination, whereas Carbendazim 50% WP, Hexaconazole 5% EC and Propiconazole 25% EC were completely inhibitory in its action at all the concentrations.