FIELD EFFICACY OF SOME INSECTICIDES AND BIOPESTICIDES AGAINST RICE HISPA DICLADISPA ARMIGERA (OLIVIER)

摘要

Field efficacy of insecticides and biopesticides was studied against rice hispa Dicladispa armigera (Olivier) infesting rice (cv. Kasturi Basmati) during kharif 2014 and 2015 at the CSK Himachal Pradesh Krishi Vishwavidyalaya, Rice and Wheat ResearchCentre, Malan. Application of various insecticides viz., dinotefuran 20 SG, triazophos 40 EC, chlorpyriphos 20 EC, monocrotophos 36 SL @ 200g, 500,1250,850 ml ha~(-1), respectively, and biopesticides viz., Beauveria 10~6 spores ml~(-1),Melia 5%, Eupatorium 5% @ 5.0,2.5, 2.5 L ha~(-1), respectively, proved promising. Dinotefuran was the most effective, while of the biopesticides, Beauveria application was the best. However, maximum returns were obtained with triazophos (BCR=8.8:1 and 8.0:1 during 2014 and 2015, respectively at the experimental farm, and 12.2:1 at farmer’s field.