Bioefficacy of Phosphamidon Granules in the Management of Major Rice Pests

摘要

Rice crop is grown over an area of 40-41 million hectares under diverse climatic conditions in India (Sampath, 1990). It is attacked by more than 100 insect species of which a dozen cause significant yield loss. Most important among them are yellow stemborer (Scirpophaga incertulas Walker), whorl maggot (Hydrellia philippina Ferino), case worm (Paraponyx stagnalis Zeller) and leaf folder (Cnaphalocrocis medinalis Guenee). Many fewer insecticide molecules with high potency are being introduced for the management of these pests. The biological effectiveness of such insecticides against major insect pests was investigated under different ecological field situations in the present study.