Effects of Betacyfluthrin + Imidacloprid OD (Solomon) against Major Plant Hoppers on Rice Ecosystem in Burdwan, West Bengal

Abstract

The current study was conducted to evaluate the effects of three distinct levels of concentration of Betacyfluthrin 90 g l-1 + Imidacloprid 210 g l-1 OD (Solomon) (45 g a.i. ha-1, 60 g a.i. ha-1 and 75 g a.i. ha-1) during kharif 2020 and 2021 against major plant hoppers of rice. White backed plant hopper (Sogatella furcifera) and Brown plant hopper (Nilaparvata lugens) were found as major plant hoppers on rice field. Solomon @ 75 g a.i. ha-1 was recorded significantly efficient against BPH and WBPH in both crop seasons (kharif 2020 and kharif 2021) with highest reduction over control (80.42% & 76.22% and 79.65% & 83.54%, respectively). A noticeably increased yield of rice grains was observed in case of Solomon @ 75 g a.i. ha-1 treatment than in control plot in kharif 2020 (73.78 q ha-1) and kharif 2021 (68.03 q ha-1). Although the natural enemy population in the plots that were treated with Solomon @ 10-30 g a.i. ha-1 had no significant negative impact than the untreated control and other treated plots.