Srinivas, K.Raghuraman, M.Kumar, Kiran G. N.Kumar, Anil S. T.Kumar, Uday E.2025-02-282025-02-2820229706763https://dl.bhu.ac.in/ir/handle/123456789/62947The field 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 chlorpyrifos 19% ME, imidacloprid 17.8 SL, thiamethoxam 25 WG, and fipronil 5 SC against rice yellow stem borer, Scirpophaga incertulus Walker at BHU, Varanasi. Results showed that fipronil @ 75 g ai ha-1 was the most effective against the stem borer (2.8% dead hearts & 1.6% white ears/10 hills after the first and the second sprays, respectively) but the yield was higher in flonicamid @ 100 g ai ha-1 treated plots (44.81 q ha-1), it might be due to its role in enhancing the plant vigour to tolerate pest damage. © 2022, Pesticide Research Journal. All rights reserved.Bio-EfficacyDead heartsFipronilFlonicamidStem BorerWhite earsArticlehttps://doi.org/10.5958/2249-524X.2022.00016.4