Management of aphid Cerciaphis emblica Patel & Kulkarni infesting Indian gooseberry, Emblica officinalis Gaertn.

摘要

Field trials were conducted during the years 2004 and 2005 to evaluate the bio-efficacy of lace wing (Chrysoperla carnea) larvae @ 500/tree, NSKE 5 per cent, KSKE 5 per cent, imidacloprid (Tatamida 200SL) 40 g a.i./ha, acephate (Asataf 75SP) 350 g a.i./ha, profenophos (Carina 50EC) 0.07 per cent, Ethion 40EC+cypermethrin 5EC (Colfos 405) 0.03 per cent and Verticillium lecanii (Verticel) 4 g/litre of water against aphid, Cerciaphis emblica Patel & Kulkarni infesting Indian gooseberry, Emblica officinalis Gaertn. On the basis of pooled mean of both the years, imidacloprid was the most effective; however, it was on par with acephate, ethion+cypermethrin and profenophos after 3 and 10 days and only from acephate upto 15 days of application. NSKE and KSKE reduced 71.38 and 69.02 per cent aphid population and were on par with each other. Verticillium lecanii and C. carnea, respectively, reduced 59.05 and 48.93 per cent aphid population and were significantly different from each other.