Insecticide Toxicology Laboratory Department of Entomology, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar - 263 145, Uttarakhand, India
*Corresponding authors' E-mail : gunjankandpal115@gmail.com
Online published on 4 March, 2024.
The persistent toxicity (PT) of three insecticides, three fungicides and their nine combinations has been determined on soybean, Glycine max (L.) Merr. against 3d old larvae of Spodoptera litura (Fab.). The order of persistent toxicity at 72 h after feeding (HAF) was emamectin benzoate > [fluxapyroxad + pyraclostrobin] + [emamectin benzoate] > novaluron + indoxacarb > [fluxapyroxad + pyraclostrobin] + [novaluron + indoxacarb] > [metiram + pyraclostrobin] + [ novaluron + indoxacarb] > [metiram + pyraclostrobin + emamectin benzoate] > indoxacarb > [fluxapyroxad + pyraclostrobin + indoxacarb] > [metiram + pyraclostrobin] + [indoxacarb] > [fluxapyroxad + pyraclostrobin] > [metiram + pyraclostrobin] > [carbendazim + mancozeb] > [indoxacarb + carbendazim + mancozeb]. The most persistent treatment was emamectin benzoate with a PT value 1050 followed by emamectin benzoate + [fluxapyroxad + pyraclostrobin] (1050), novaluron + indoxacarb (1016) and novaluron + indoxacarb + [fluxapyroxad + pyraclostrobin] (916.65) at 72 HAF. The least persistent combinations were carbendazim + mancozeb (6.66) followed by indoxacarb + [carbendazim + mancozeb] (6.66) and [metiram + pyraclostrobin] (26.66).
Glycine max (L.) Merr. var PS- 1347, Insecticide and fungicide combinations, Persistent toxicity, Spodoptera litura
