Efficacy of newer insecticides and biorationals on larval population of green semilooper and tobacco caterpiller

The experimental findings revealed that larval population of green semilooper and Spodoptera litura per meter row length at 3, 7, and 10 days after spraying was low in thiamethoxam 25 WG 100 g/ha alternate with rynaxypyr 20 Sc @ 150 ml/ha followed by thiamethoxam 25 WG 100 g/ha alternated with triazophos 40 Ec @0.80 l/ha, thiamethoxam 25 WG 100 g/ha alternated with indoxacarb 15 Ec @ 0.50 l/ha and thiamethoxam 25 WG 100 g/ha alternated with spinosad 45 SC @ 0.20 l/ha as compared to untreated control. The significantly maximum grain yield was recorded in thiamethoxam 25 WG 100 g/ha alternated with triazophos 40 Ec @0.80 l/ha, 1481 kg/ha treated plots followed by thiamethoxam 25 WG 100 gm/ha alternated with rynaxpayr 20 Sc @ 150 ml/ha, 1376 kg/ha and thiamethoxam 25 WG 100 gm/ha alternated with spinosad 45 Sc @0.20 l/ha, 1262 kg/ha as compared to untreated control, 653 kg/ha. Application of thiamethoxam 25 WG 100 gm/ha alternated with triazophos 40 EC @ 0.80 l/ha, gave the benefit of Rs. 15,470.