Compatibility of entomopathogenic fungus Beauveria bassiana (Bals.) with selected chemical insecticides

In vitro investigation was carried out to examine the compatibility of Beauveria bassiana (Bals.) (Bb-5a) with ten insecticides through poisoned food technique. The insecticides were tested at three different doses viz., field recommended dose (RD), half of the recommended dose (0.5 × RD) and double the recommended dose (2 × RD). Among all the chemical insecticides tested for their compatibility, only diafenthiuron was not compatible with B. bassiana and it inhibited the growth. While, imidacloprid, thiamethoxam, acetamiprid, clothianidin, acephate, fipronil, buprofezin, flonicamid and azadirachtin were showed compatible at 14th and 30th day after inoculation. Consequences of the present investigation recommended that aside diafenthiuron, rest of the insecticides examined can be safely used along with B. bassiana in integrated pest management.