Vol. 11, Issue 4 (2022)

Author(s):
K Srinivas, M Raghuraman, Anil Kumar ST and Uday Kumar E

Abstract:
The field experimental study was conducted during 2018-19 with a rice variety, Moti, to evaluate the bio-efficacy of the pyridine group insecticide, flonicamid 50% WG alongside a few major novel insecticides including chlorpyrifos 19% ME, imidacloprid 17.8 SL, thiamethoxam 25%WG, and fipronil 5% SC against rice leaf folder, Cnaphalocrocis medinalis (Guenee) at BHU, Varanasi. it was discovered that chlorpyrifos and thiamethoxam were the most effective insecticides, causing 4.11% and 4.10% leaf damage, respectively. The rest of the insecticides, such as flonicamid @ 100g a.i/ha (5.97%), flonicamid @ 75g a.i/ha (6.41%), flonicamid @ 50g a.i/ha (6.85%), and fipronil (8.65%), were less effective in decreasing leaf folder damage. The plot treated with flonicamid @ 100g a.i/ha had the highest yield, with 31.25 percent, which might be due to its role in enhancing the plant vigour to tolerate pest damage, followed by flonicamid @ 75g a.i/ha (30.46 percent), fipronil (27.68 percent), flonicamid @ 50g a.i/ha (27.04 percent), chlorpyrifos (25.22 percent), imidacloprid (21.41 percent), and thiamethoxam (14.65 percent).