Integrated Pest Management of Brown Plant Hopper (Nilaparvata lugens (Stal)) in rice of Mancherial District, Telangana State, India

Abstract

The present study on Integrated Pest Management (IPM) of brown plant hopper, Nilaparvata lugens (Stal) in rice has been conducted as a Front Line Demonstration (FLD) in the adopted villages of KVK, Bellampalli, Mancherial district of Telangana state during the kharif (June – December), season of 2018‒19, 2019‒20 and 2020‒21 respectively to create awareness among the farming community on the IPM practices to manage the pest. The adoption of IPM practices includes formation of alleyways, recommended dose of nitrogen fertilizer, alternate wetting and drying, spraying of need based insecticides like Dinotefuran 20 SG @ 0.4 g or Pymetrozine 50 WDG @ 0.6 g l-1 of water were carried out. The study reveals that the lowest hoppers incidence was witnessed in the demonstrated plot with 1.84, 12.18 and 19.0 adults hill-1 in tillering stage and 7.76, 24.95 and 52.38 adults hill-1 in panicle stage over farmers practice (3.33, 35.40 and 25.42 adults hill-1 in tillering stage and 19.84, 50.30 and 63.47 adults hill-1). The average yields of IPM module demonstrated plot was 7130, 5513 and 5065 kg ha-1 whereas in farmer practice the yield was 6733, 4851 and 4768 kg ha-1 during Kharif (June–December), 2018‒19, 2019‒20 and 2020‒21 respectively with an increased yield of 5.88%, 13.64% and 6.22% during corresponding Kharif (June–December), 2018‒19, 2019‒20 and 2020‒21. Further the Cost-Benefit ratio of 1.88, 2.68 and 1.78 in the technology demonstrated plots whereas in farmers practice the recorded Cost-Benefit ratio of 1.43, 1.94 and 1.48 during corresponding Kharif (June–December), 2018‒19, 2019‒20 and 2020‒21 respectively.