EFFICACY OF NEWER INSECTICIDES AGAINST APHIDS AND JASSIDS ON POTATO

Among the sequential sprays of biopesticide and newer insecticides, the treatments T 6 (Potato seed tuber treatment with imidacloprid (200 SL) @ 0.04 % (0.4 ml/ litre) for 10 mins + soil application of M. anisopliae (10 13 cfu/ ml) @ 2kg/ ha + spraying of thiacloprid @ 48g a.i./ ha (150-250g/ ha) at the time of pest appearance + spraying of M. anisopliae @ 5.0 g with sunflower oil @ 1ml/ litre after 15 days of first spray) was significantly superior in suppressing the population of sucking pests viz., jassid, thrips and whitefly and was at par with T 5 ( Potato seed tuber treatment with imidacloprid (200 SL) @ 0.04 % (0.4 ml/ litre) for 10 mins + spraying of M. anisopliae (1x10 8 cfu/ ml) @ 5g/ litre of water with sunflower oil @ 1ml/ litre at the time of emergence + spraying of imidacloprid 70WP @ 0.075g + neem oil 0.60ml/ litre of water ) which was found most effective against aphid.