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The field experiment was carried out to study the bioefficacy of newer insecticides against fruit borers of okra at Department of Agricultural Entomology, VNMKV, Parbhani during Kharif 2018. The trial was laid out in Randomized Block Design with thrice replications. Seven insecticides treatments viz., T1:Emamectin benzoate 5% SG @ 135 g/ha, T2:Lambda cyhalothrin 4.9% CS @ 300 ml/ha, T3: Chlorantriniprole 18.5% SC @ 125 ml/ha, T4: Fenpropathrin 30% EC @ 170 ml/ha, T5: Flubendiamide 39.37% SC @ 100 ml/ha, T6:Spinotoram 11.7% SC @ 420 ml/ha and T7: Spinosad 45% SC @160 ml/ha in comparison to control (water spray) were tested for their efficacy against fruit borers of okra. The results revealed that all the insecticide treatments were significantly effective in reduction of fruit borers infestation on number basis as well as weight basis after first and second sprays on okra. Among the test insecticides, chlorantraniliprole 18.5% SC (2.99 and 3.30%) recorded minimum mean per cent fruit infestation on number basis as well as weight basis, respectively and it was at par with spinetoram 11.7% SC (3.28 and 3.81%) and spinosad 45% SC (4.02 and 4.33%). Whereas, lambda cyhalothrin 4.9% CS was least effective against fruit borer on number basis (7.26%) and weight basis (7.82%) with mean fruit infestation on first and second sprays, respectively. The highest marketable fruit yield of 90.20 q/ha was recorded in the treatment chlorantraniliprole 18.5% SC followed by spinotoram 11.7% SC (89.35 q/ha). The highest net returns of Rs. 35375/ha was also achieved through chlorantraniliprole 18.5% SC. The highest incremental cost benefit ratio (ICBR) of 1:18.70 was achieved with emamectin benzoate followed by lambda cyhalothrin (1:17.51). Whereas, the lowest ICRB (1:02.89) was found in plot treated with spinetoram 11.7% SC, it may the expensive cost of insecticide.

Bio-efficacy of newer insecticides against fruit borers of okra