author(s)
Bhubanananda Adhikari, Jayaraj Padhi and PNK Dohling

abstract
Eight insecticidal treatments including pymetrozine 50% WG at 100, 125, and 150 g a.i./ha, imidacloprid 200 SL @ 25 g a.i./ha, dinotefuran 20 SG @ 30 g a.i/ha, sulfoxaflor 24 SC @175 g a.i/ha, flonicamid 50 WG @ 75 g a.i./ha and buprofezin 25 SC @ 200 g a.i/ha were field evaluated against brown panthopper and white-backed planthopper in rice along with untreated control at Central Research Farm, Department of Entomology, Orissa University of Agriculture and Technology (OUAT), Bhubaneswar during Kharif, 2015. It was revealed that pymetrozine 50% WG 150 g a.i./ha proved to be the superior insecticide against brown planthoppers and white backed planthoppers exhibiting maximum per cent reduction over control followed by pymetrozine 50% WG 125 g a.i./ha. The least effective insecticide was imidacloprid 200 SL @ 25 g a.i./ha.