author(s)
Ratnakar V, Shiva B, Veeranna G, Jagan Mohan Rao P and Raghurami Reddy P

abstract
The study was undertaken to demonstrate on the management of brown plant hopper (BPH), Nilaparvata lugens in rice with formation of alleyways, recommended dose of nitrogen fertilizer, alternate wetting and drying, spraying of pymetrozine 50 WG 0.6 g/l and spraying azardiractin 1500 ppm 5ml /l for adult management. When results were compared with farmers practiced plots the hopper incidence was lower in the technology demonstrated plot with 10.1 and 15.7 adults /hill in tillering stage and 20.9 and 29.8 adults /hill in panicle stage with increased yield of 7.5 and 7.7 per cent during corresponding Kharif 2018 and Kharif 2019. The cost benefit ratio (BC Ratio) was higher with 2.1:1 and 2.6:1 in technology demonstrated plot and lower in farmer practiced plot with 1.70:1 and 1.86:1 in corresponding Kharif 2018 and Kharif 2019.