Vol. 11, Issue 12 (2022)

Author(s):
Patil SR, Desai SD, Mule RS, Rajemahadik VA, Kale RG, Shaikh AK and Dethe SR

Abstract:
A field experiment for the management of sunflower capitulum borer (Helicoverpa armigera),was conducted at the instructional farm, Department of Agronomy, College of Agriculture, Dapoli, Dist. Ratnagiri, during the Rabi 2021-22. Various insecticidal treatments including deltamethrin, emamectin benzoate, indoxacarb, lambda cyhalothrin, thiamethoxam, imidacloprid and azadirachtin were tested for their efficacy against sunflower capitulum borer. The overall larval population over control after two sprays revealed that the treatment deltamethrin 2.8 EC was superior and most effective treatment which recorded the least mean population 2.20 larvae per five selected plants followed by indoxacarb 14.5 SC with a larval population of 2.47. Then next best treatments were emamectin benzoate, lambda cyhalothrin, azadirachtin 1 per cent, imidacloprid and thiamethoxam with recorded larval populations of 2.77, 2.89, 3.24, 3.84, and 3.86 larvae per five selected plants respectively. However, all the treatments were significantly superior over control.