Efficacy of insecticides mixture to brown planthoppers (Nilaparvata lugens) and its effect on natural enemies

Abstract Insecticides applications are one of the components to control brown planthoppers pest that applied in large scale by farmers. In field, some farmers mix different active ingredients insecticides planthoppers. This study was aimed find out efficacy mixed plant hoppers and effect on natural enemies field. The research carried Pemalang Regency, Central Java, 2016/2017 rice planting season. There were eleven treatments with three replications 5x8 m2 plots using randomized completed block design. Two successive sprays selected sprayer at 14 days interval. Pymetrozine 480 + Imidacloprid 160 (150+50), (75+25), 185 Buprofezin 240 (150+194,59), (75+97,3), Fipronil 40 (100+16,67) effectively controlled population planthopper as follows 96.78%; 94.27%; 96.45%; 96.71%; 94.01%. mixtures tested did not affect such spiders, Paederus , C. lividipennis .