Annals of Plant Protection Sciences

Pest scenario in rice and wheat crops was witnessed to have undergone a drastic change after green-revolution in Indogangetic plains. Insect-pests like leafand planthopers, leaffolder, gall midge, root weevil and case worm emerged as important pests of rice. Besides, the traditioinal pest of rice like stem borer, hisp and stink bug also continued to damage the crop albeit at low levels. In wheat, insect pests like shoot fly, aphids, brown mite, army worm, pink borer, gram pod borer, wire worms and white grubs gained prominence. Among the old pest, the termite continued to inflict substantial damage in dry area while gujhia weevil, a major pest prior to green revolution lost importance now. Among rice diseases, blast, bacterial leaf blight, sheath blight, brown leaf spot and false smut were recorded to be the significant ones. Of these, the sheath blight and the false smut became important only after the green revolution. In wheat, brown rust, yellow rust, black rust, loose smut, kamal bunt and powdery mildew were observed to be important diseases in different states. Kamal bunt and foliar blights were more damaging whereas stem rust became relatively less important after the green revolution.