Evaluate the efficacy of newer insecticides against jassid
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The present investigation on"Arthropod succession and evaluation of efficacy of newer insecticides against jassid (Empoasca kerri Purthi) on black gram [Vigna mungo (L.) Hepper]".revealed association of a total 14 arthropods with black gram crop. Among these five viz-jassid (Empoasca kerri), whitefly (Bemisia tabaci), Bihar hairy caterpillar (Spilosoma obliqua), tobacco caterpillar (Spodotera litura), and flower thrips (Caliothrips indicus.) were predominant and six viz-Grasshopper (Atractomarpha spp.), leaf webber (Grapholita critica),galerucid beetle (Madurasia obsercurella), blister beetle ...
The present investigation on"Arthropod succession and evaluation of efficacy of newer insecticides against jassid (Empoasca kerri Purthi) on black gram [Vigna mungo (L.) Hepper]".revealed association of a total 14 arthropods with black gram crop. Among these five viz-jassid (Empoasca kerri), whitefly (Bemisia tabaci), Bihar hairy caterpillar (Spilosoma obliqua), tobacco caterpillar (Spodotera litura), and flower thrips (Caliothrips indicus.) were predominant and six viz-Grasshopper (Atractomarpha spp.), leaf webber (Grapholita critica),galerucid beetle (Madurasia obsercurella), blister beetle (Mylabris pustulata), leaf miner (Chromatomyia horticola), gram pod borer (Helicoverpa armigera) were recorded as miner arthropods. Threeviz- lady bird beetle (C. septumpuntata and C. sexmaculata) and predatory spider (Oxypus spp.) were recorded as natural enemies associated with this crop. Among the various insecticides evaluated against the jassid, Emamectin benzoate 5SG @10ga.i/ha treatedblack gram crop showed highest reduction in crop damage and gave highest crop yield (11.00q/ha) followed by Emamectin benzoate 5SG @8ga.i/ha (10.30q/ha) treated plots. The highest net income and CBR.
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