Evaluation of different insecticides and biorationals against scale insect, hemilecanium imbricans (Green) under laboratory condition

Among 25 insecticides and biorationals evaluated with and without Fish Oil Rosin Soap (5 ml/l) against different instars of scale insect, Hemilecanium imbricans, the insecticides viz., buprofezin 25 SC @ 1.25 ml/l, chlorpyriphos 20 EC @ 2 ml/l, acephate 75 SP @ 1 g/l, lambda-cyhalothrin 5 EC @ 0.5 ml/l, profenophos 50 EC @ 2 ml/l and dichlorvos 76 EC @ 1 ml/l were recorded highest per cent mortality of scales under laboratory conditions.