Bioefficacy of Insecticides against Aphids Infesting Cumin (Cuminum cyminum L.)

Afield experiment conducted during rabi, 2024–25 at the Plant Pathology Farm, Anand Agricultural University, Anand, Gujarat evaluated the bioefficacy and economic performance of selected insecticides against aphids infesting cumin (Cuminum cyminum L.). All treatments significantly reduced aphid populations and enhanced seed yield compared with the untreated control. Spirotetramat 15.31 OD (2.96 aphids per 5 cm shoot), flonicamid 50 WG (3.38 aphids per 5 cm shoot) and dinotefuran 20 SG (3.83 aphids per 5 cm shoot) consistently provided superior suppression of aphids, resulting in higher yields and favourable economic returns. Among them, spirotetramat exhibited the greatest overall efficacy, while dinotefuran achieved the highest incremental cost-benefit ratio (1:24.45) owing to its lower application cost. Imidacloprid and spinetoram were comparatively less effective. The study identifies spirotetramat, flonicamid and dinotefuran as reliable and economically viable options for sustainable aphid management in cumin.