TOXICITY OF NEW MOLECULES AGAINST AMERICAN BOLLWORM, HELICOVERPA ARMIGERA IN COTTON

Toxicities of new insecticides having novel modes of action along with conventional insecticides were evaluated against Helicoverpa armigera during 2021-2023 at ARS Dharwad.Profenofos 40%+Cypermethrin 4% EC @ 2.00 ml /ha showed most effective and offered lowest number of larvae of 0.34 per plant with reduction of 90.32 per cent, more of good opened bolls (35.69/plant), bad opened bolls (6.42 per plant) with yield of 14.84q/ha followed by Cypermethrin 10% + Indoxcarb 10% @ 1.00 ml/lit shown significant control compared to individual formulations.Whereas, Spinetoram 11.70SC @1.00 ml per lit proved to be promising treatment with 0.37 per plant (89.61% reduction) and also recorded 35.10 good opened bolls, 6.84 bad opened bolls and yield of 13.94 q/ha.However, combi products resulted in relatively lowest coccinellids and Chrysoperla populations compared to individual formulations Spinetroam 11.7SC and Spinosad 45SC proving less hazardous.