Vol. 12, Issue 6 (2023)

Author(s):
Sonam Tiwari and Ashwani Kumar

Abstract:
The present investigation entitled “Evaluate the efficacy of some chemical pesticides and biopesticides against Rice brown plant hopper (Nilaparvata lugens Stal.) in Paddy” was carried out at. central research field, SHUATS, Prayagraj (U.P.) during Kharif, 2022. The efficacy of different chemical pesticides and biopesticides against Rice brown plant hopper was evaluated. Among the treatments, flonicamid 50 WG at a rate of 150 gm/ha showed the highest effectiveness (4.93), followed by Dinotefuron 20 SG at 150 gm/ha (5.40) and Lambda-cyhalothrin 5 EC at 500 gm/ha (8.04). Other effective treatments included Spinosad 45% SC at 165 gm/ha (9.26), Neem oil 2% at 20 ml/lit (11.78), Sixer plus at 1 mi/lit (12.60), and Beauveria bassiana (12 x 108) c.f.u./ml at 5 ml/lit (13.30). Flonicamid 50 WG resulted in the highest grain yield of rice (45.50 q/ha), followed by Dinotefuron 20 SG (42.80 q/ha), Lambda cyhalothrin 5 EC (40 q/ha), and Spinosad 45% SC (38 q/ha). The treatments with flonicamid 50 WG, Dinotefuron 20 SG, Lambda cyhalothrin 5 EC, and Spinosad 45% SC showed the highest cost-benefit ratios, with flonicamid 50 WG having the highest ratio of 1:2.97.