Compatibility of Beauveria bassiana (Balsamo) vuillemin with different insecticides and fungicides

Compatibility of B. bassiana was studied in laboratory conditions with commonly used twelve insecticides and five fungicides with three doses (Lower, recommended and higher) by poison food technique. The results showed that the insecticide fipronil 5 SC 0.005% was found to be the most compatible at all doses, as it was categorized as harmless (Grade 1) to this fungus. However, carbosulfan 25 EC 0.025%, emamectin benzoate 5 SG 0.00125%, dimethoate 30 EC 0.015%, imidacloprid 17.8 SL 0.0026% and chlorantraniliprole 18.5 SC 0.003% were relatively harmless (Grade 1) at lower dose. At recommended dose, fipronil 5 SC 0.010%, chlorantraniliprole 18.5 SC 0.006%, acetamiprid 20 SP 0.006% and dimethoate 30 EC 0.030% were compatible with tested fungus. Dichlorvos 76 EC and quinalphos 25 EC at all doses were categorized as harmful (Grade 4) to these fungi. In case of fungicides, chlorothalonil 75 WP was found to be the most compatible at all doses. Hexaconazole 5 EC, mancozeb 70 WP and carbendazim 50 WP were found slightly harmful (Grade 2) while propiconazole 25 EC at all doses was harmful (Grade 4) to this fungus. From the overall results it can be concluded that, among twelve insecticides, fipronil, chlorantranilliprole, acetamiprid, dimethoate, carbosulfan, novaluron and imidacloprid can be used with B. bassiana. Among five fungicides, chlorothalonil can be used with B. bassiana.