Bio-Efficacy of Botanicals and Chemical Insecticides for The Control of Castor Leaf Miner (Liriomyza trifolii Burgess) Under Dry Land Condition

Field experiments were conducted with eight treatments viz., Carbaryl 50 WP 0.2 per cent, Endosulfan 35 EC 0.05 per cent, Triazophos 40 EC 0.05 per cent, Spinosad 45 SC 0.018 per cent, Fipronil 5 SC 0.01 per cent, Neem Seed Extract 5 per cent (w/v), Bacillus thuringiensis 0.1 per cent and Untreated control for the control of serpentine leaf miner (Liriomyza trifolii B.) on castor cultivar DCS-9 during kharif seasons of 2007-08 and 2008-09. The spray fluid @ 500 L ha^-1 was used in each of the treatment. Two sprays of all the treatments except untreated control were applied 30 and 45 DAS. The treatment with 0.018 per cent Spinosad was the most effective in suppressing leaf miner incidence and produced good seed yield (883.28 kg ha^-1 ) followed by 0.05 per cent Triazophos (835.82 kg ha^-1 ). The other treatments were found relatively less effective for leaf miner control particularly under dry land condition.