Field evaluation of certain new insecticides for the management of chilli thrips in Andhra Pradesh
Keywords:Chilli (Capsicum annuum L.), insecticides, thrips, Andhra Pradesh
A field study was conducted at Horticultural Research Station, Lam, Guntur, Andhra Pradesh for two consequent years i.e 2007-08 and 2008-09 to evaluate the new insecticides for the management of chilli thrips. Among the eleven molecules evaluated, Spinosad 45 SC @125 ml/ha recorded lowest mean number of thrips/leaf (1.0) followed by Diafenthiuron 50WP @ 750g/ha (3.1), Fipronil 5 SC @ 1000 ml/ha (6.7) and Chlorfenpyr 10 EC @1000ml/ha (12.6) were found significantly effective against chilli thrips as compared to untreated control (30.6). Highest thrips population /leaf was recorded with Lufenuron 5 EC @ 500 ml/ha (31.5), Novaluran 10 EC @ 375 ml/ha (25.4) and Emamectin benzoate 5 SG @ 200 g/ha (24.1). Highest mean dry pod yield (Kg/ha) was recorded with Spinosad 45 SC @125 ml/ha (3157), next best treatment was Diafenthiuron 50WP @ 750 g/ha (2389). It was followed by Chlorfenpyr 10 EC @1000ml/ha (2342), Fipronil 5 SC @ 1000 ml/ha (2305). Spinosad 45 SC @125 ml/ha was found to be effective in reducing chilli thrips and recording higher yields.
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