Vol. 12, Special Issue 12 (2023)

Author(s):
LS Chaudhary, CJ Patel, LV Ghetiya, HK Chaudhary, HG Patel and DK Ajudia

Abstract:
The field trials for bioefficacy of insecticides against fall armyworm was carried out at College Farm, NMCA, NAU, Navsari during summer, 2022. The lowest larval population of S. frugiperda was observed when crop was treated with emamectin benzoate (0.025%) and which was at par with spinosad (0.018%) and chlorantraniliprole (0.005%). The next effective treatment was thiodicarb (1.1%) which remained at par with indoxacarb (0.0094%). The maximum larval population in among different insecticidal treatments was found in lambda cyhalothrin (0.0038%) followed by profenophos (0.0125%) and both were at par with control treatment. The order of effectiveness of various treatments against S. frugiperda was emamectin benzoate (0.025%) ≥ spinosad (0.018%) ≥ chlorantraniliprole (0.005%) ≥ thiodicarb (1.1%) ≥ indoxacarb (0.0094%) ≥ profenophos (0.0125%) ≥ lambda cyhalothrin (0.0038%) > control (water spray). The maximum (68%) reduction of larval population was recorded in T₄- spinosad (0.018%) followed by 67 percent in T₂- emamectin benzoate (0.025%). The order of reduction of larval population over control of various treatments against S. frugiperda was spinosad (68%) ≥ emamectin benzoate (67%) ≥ chlorantraniliprole (65%) ≥ thiodicarb (52%) ≥ indoxacarb (51%) ≥ profenophos (42%) ≥ lambda cyhalothrin (26%).