The field experiment was carried out to evaluate the effect of newer insecticide molecules against sucking pest complex of okra. Thiamethoxam @ 25 g a.i./ha recorded 1.38 overall average survival of aphid population on plant and was significantly superior over all other treatments. Fipronil @ 50 g a.i./ha was found to be at par with thiamethoxam @ 25 g a.i./ha and recorded 1.68 overall average survival aphids/3leaves/plant. The next best treatment, buprofezin @ 156 g a.i./ha, recorded 2.44 overall average survival aphids/ 3leaves /plant. Spinosad @ 50 g a.i./ha and imidacloprid @ 25 g a.i./ha were at par with buprofezin @ 156 g a.i./ha and recoded 2.74 and 2.81 overall average survival aphids/ 3leaves /plant, respectively. Abamectin @ 100 g a.i./ha was found to be less effective recording 4.10 average survival aphids/ 3leaves /plant.
Eudocima spp. (Noctuidae) also known as fruit piercing moth, is a serious pest of tropical countries including subtropical Southeast Asia, Australia, and the western Pacific islands. It is found commonly occurring on ripening fruits. Surveys conducted in Maharashtra revealed that three abundant larval parasitoids viz., a tachinid fly, Goniophthalmus halli, eulophid wasps, Euplectrus maternus and Tetrastichus sp. were contributing up to 36.65, 41.46 and 36.58 % larval mortality, respectively. Laboratory assays were conducted to test the parasitoids for host specificity by exposing them to larvae of Eudocima sp. However, Goniophthalmus halli showed parasitization on other species of Eudocima, whereas E. maternus was found to be host specific on E. materna. In laboratory investigation, 72 to 89% parasitization of Trichogramma chilonis on the eggs of E. materna was also recorded.
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