N.B. Meena, A.K. Meena* and A.R. Naqvi
Department of Entomology, College of Agriculture
(SK Rajasthan Agricultural University), Bikaner-334006
* Maharana Pratap University of Agriculture and Technology, Udaipur -313001 (Rajasthan)
*Email: rajeshpatho@gmail.com
Received-05.03.2015, Revised-24.03.2015
Abstract: The bio-efficacy of eight insecticides viz., imidacloprid 17.8 SL @ 0.005%, deltaphos 36 EC @ 0.036%, thiamethoxam 25 WG @ 0.005%, spinosad 45 SL @ 0.0068%, profenofos 50 EC @ 0.05%, azadirachitin 0.03 EC @ 5 ml/lit., NSKE @ 5.0%, Bacillus thuringiensis 8 L @ 0.012% evaluated against jassid, whitefly and shoot and fruit borer in okra at 15 days intervals and revealed that imidacloprid (0.005%) was found most effective against all the three pests followed by thiamethoxam (0.005%), deltaphos (0.036%) and spinosad (0.0068%). B. thuringiensis (0.012%) proved least effective followed by azadirachtin (5 ml/lit) and NSKE (5.0%). The treatments of profenofos (0.05%) ranked in middle order of their efficacy. All the insecticides increased the yield of marketable fruits significantly over control. The maximum yield (76.76 q/ha) was recorded in imidacloprid followed by spinosad (74.07 q/ha) and deltaphos (71.46 q/ha). The minimum yield was recorded in B. thuringiensis (44.10 q/ha) followed by azadirachtin (50.85 q/ha) and NSKE (55.02 q/ha).
Keywords: Bio-efficacy, Insecticides/bio-pesticides, Jassid, Whitefly, Shoot, Fruit borer
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