BALDEV RAM*, HEMANT SWAMI, N.L.DANGI AND H. K. JAIN

The present investigation was carried out at Agronomy farm, Rajasthan College of Agriculture, Udaipur during -2018. Among the insecticides evaluated against stem borer thiamethoxam 25%WG proved to be the most effective in terms of mean leaf injury rating, per cent dead hearts and per cent stem tunneling. The minimum leaf injury rating of 2.67 was recorded in plot treated with thiamethoxam 25%WG 25g a.i./ha followed by flubendiamide 20%WG 25g a.i./ha, emamectin benzoate 5% SG 9.5g a.i./ha, rynaxypyr 0.4% G 30g a.i./ha, fipronil0.3 G 75g a.i./ha and Carbofuran 3G 1000g a.i./ha with leaf injury rating (LIR) of 3.17, 4.77, 5.13, 5.87 and 6.93 respectively. The maximum leaf injury rating (7.97) was recorded with untreated control. The lowest dead heart (10.00%) was recorded with treatment of thiamethoxam followed by flubendiamide, emamectin benzoate, rynaxypyr, fipronil and Carbofuran with dead heart of 20.00, 23.33, 26.67, 30.00 and 40.00 per cent respectively. The highest per cent of dead heart (50.00%) was recorded with untreated control. The lowest tunnel 9.09 per cent was observed in thiamethoxam followed by flubendiamide, emamectin benzoate, rynaxypyr, fipronil and Carbofuran with tunnel of 14.87, 17.47, 19.76, 28.68 and 29.80 per cent respectively. The highest tunnel of 30.78per cent per plant was recorded in untreated control.