Efficacy of bio-pesticides against jassid (Amrasca devastans Dist.) on brinjal
2008
Noonari, A.A.
The experiment was laid out in a Complete Randomized Block Design having four treatments (including Control) with four replications. Neem oil, Tobacco leaves, Neem powder, Neem oil + B.M. Beneficial micro-organism were sprayed twice. The pre-treatment counts of the pest were recorded one day before spray. The post-treatment observations were taken after 24, 48, 72 hours one week two weeks. In first spray against jassid neem oil was most effective biopesticides and showed highest mortality (71.97%) followed by neem oil + B.M. Beneficial micro-organism (65.48%) neem powder (61.56%) and Tobacco leaves (54.75%). In the first spray against jassid tobacco leave has showed highest reduction percentage (85.90%) and followed by neem oil (80.00%) neem oil + B.M. Beneficial micro-organism (75.70%) and neem powder (70.70%). In second spray against jassid neem oil has showed good highest mortality (72.30%) followed by neem oil + B.M. Beneficial micro-organism (63.68%).
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