Pantnagar Journal of Research

Abstract

The current research on persistent toxicity of two insecticides, two fungicides, and their six combinations on soybean against 3days old larvae of S. litura was conducted during kharif, 2023 at Norman E. Borlaug Crop Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar. The order of toxicity at 72 hours after feeding (HAF) was spinetoram> flubendiamide> (fluxapyroxad + pyraclostrobin) + flubendiamide> (metiram + pyraclostrobin) + flubendiamide> (fluxapyroxad + pyraclostrobin) + spinetoram> (metiram + pyraclostrobin) + spinetoram> (carbendazim + mancozeb) + spinetoram> (carbendazim + mancozeb) + flubendiamide> tebuconazole> hexaconazole. The most persistent treatment was spinetoram with a PT value of 1266.65 followed by flubendiamide (PT= 1133.35) and (fluxapyroxad + pyraclostrobin) + flubendiamide (PT= 916.65). The least persistent treatments were tebuconazole and hexaconazole with a PT value of 6.66 at 72 HAF.