Efficacy of insecticides against cerambycids in mulberry

The infestation of cerambycids especially Apriona germari and Batocera rufomaculata on mulberry in Jammu and Kashmir poses serious threat to silkworm Bombyx mori. Hence, five insecticides viz., dichlorvos, endosulfan, imidacloprid, ethion, chlorpyriphos along with mixture of chlorpyriphos and cypermethrin were evaluated with injection in galleries at three doses to evaluate mortality of grubs. It was observed that the galleries formed by the grubs got reduced with the injection of these insecticides; at 1% all were effective with dichlorvos ranking first but at 0.05% these were ineffective.