Vol. 12, Issue 1 (2023)

Author(s):
Yashwant SB, Sable AV, Bhamare VK, More DG and Magar SJ

Abstract:
An investigation was undertaken to study the bio-efficacy of different newer insecticides on incidence of shoot fly Atherigona soccata (Rondani) on rabi sorghum 2021-22 at research farm of department of Argil. Entomology College of agriculture Latur with nine treatments and four replications. The results revealed that all the insecticidal treatments were significantly effective against shoot fly over untreated control. Significantly least dead heart observed in Imidacloprid 48% FS seed treatment 5 ml/kg fib Abamectin Benzoate 5% SG 4 g/10 l to the extent of 9.09%, 11.01% 13.90%, and 17.99% per m row after first spray and 18.04%, 19.94%, 21.18% and 25.02% per m row after second spray at 1, 3, 7 and 14 days, respectively followed by Imidacloprid 48% FS seed treatment 5 ml/kg fib Chlorantraniliprole-18.5% SC 3 ml/10 l evidenced next best treatment in suppressing population of dead heart to the extent of 9.55%, 12.69%, 14.10% and 18.39% per m row after first spray and 18.78%, 19.07%, 20.26% and 24.78% per m row after second spray at 1, 3, 7, and 14 days, respectively and Thiamethoxam 30 FS seed treatment 10 ml/kg fib Chlorantraniliprole-18.5% SC 3 ml/10 l observed subsequently effective treatment in suppressing dead heart population to the extent of 9.66%, 12.13%, 14.37% and 18.89% per m row after first spray and 19.31% ,19.72, 20.22% and 24.24% per m row after second spray at 1, 3, 7, and 14 days, respectively. Result revealed that all the treatments were found significantly effective in reducing the incidence of shoot fly and thus increasing the yield as compared to control. The higher grain yield in treatment Imidacloprid 48%FS seed treatment 5 ml/kg fib Abamectin Benzoate 5% SG 4 g/10 l (32.19 q per ha) and the highest incremental cost benefit ratio (1:25.1) was attained by Imidacloprid 48%FS (seed treatment).