Evaluation of Insecticides and Botanical Oils Against Cotton Whitefly Bemisia Tabaci (Hemiptera: Aleyrodidae)
The research study was conducted to compare the efficacy of insecticides viz. imidacloprid, acetamiprid, lambda-cyhalothrin and botanical oils viz. neem oil, castor oil and linseed oil against Bemisia tabaci (Gennadius, 1889) under laboratory conditions. By following Completely Randomized Design, bioassay was performed by leaf dip method with three replications and mortality data were collected after 24, 48, 72 and 96 hours of treatment. The study revealed that both botanical and synthetic pesticides had significant effects on whitefly nymphal mortality. However, the most effective pesticides for whitefly up to 96 hours were imidacloprid and neem oil, while lambda cyhalothrin and linseed oil remained least effective, and the others showed 50-60% mortality throughout the experiment.
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