Evaluation of Newer Insecticides against Rice Earhead bug (Leptocorisa acuta Thunberg)
Shreya Soneshwar, A. Gyan Sirohi, Deepali Vishwakarma, Sudish Bajiya, Manoj Kumar Ahirwar, A.K. Bhowmick
International Journal of Plant & Soil Science · pp. 573–581 · Published 30 Oct 2025
10.9734/ijpss/2025/v37i105812Abstract
A study was conducted to evaluate the efficacy of newer insecticides in managing rice earhead bug, Leptocorisa acuta Thunberg during the Kharif season of 2020. The treatments included two sprays of Imidacloprid 17.8 SL @ 300 ml/ha, Thiamethoxam 25 WG @100 gm/ha, Dinotefuran 20 SG@200 gm/ha, Clothianidin 50 WDG @ 50 gm/ha, Acetamiprid 20 SP@ 50 gm/ha, Chloropyriphos 50 EC + Cypermethrin 5% EC @1200 ml/ha and untreated control. The presence of earhead bugs was observed from the tillering stage to the harvesting stage of the crop, with the highest population recorded at 16.50 bugs per hill during mid-October. Among the six insecticidal treatments tested Dinotefuran demonstrated the highest efficacy against earhead bugs and resulted in least panicle and grain damage during the 1st and 2nd spray applications, respectively. Dinotefuran 20SG can be considered a promising option for managing rice earhead bugs to mitigate potential yield losses.
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