Field Evaluation of Some Insecticides on Whitefly (Trialeurodes vaporariorum) and Predator (Macrolophus caliginosus) on Brinjal and Tomato Plants

Mohd Rasdi Z, Che Salmah M. R, Abu Hassan A, Hamady D, Hamaseh A and Fauziah Ismail

Asian Journal of Agriculture and Rural Development, 2012, vol. 2, issue 3, 302-311

Abstract: The effect treatments with the recommended application rates of avermectin, buprofezin, white oil, lambda-cyhalothrin and cyromazine on Trialeurodes vaporariorum Westwood (Aleyrodidae: Homoptera) was evaluated. Pesticides were applied against larvae infesting brinjal (Solanum melongena L.) and tomato (Lycopersicon esculentum Mill) plants in a natural environment of the Cameron Highlands, Pahang, Malaysia. We also examined whether these pesticides affect the whitefly predator, Macrolophus caliginosus Wagner (Heteroptera: Miridae). Tested pesticides significantly reduced the larval populations of the whitefly and affect throughout the survey period. Similar effects were observed on the predator except for the white oil. Avermectin was the most effective insecticide against the population of T. vaporariorum. However, it was highly toxic to the predator, M. caliginosus. Considering relatively low mammalian toxicity of buprofezin and white oil, these two insecticides were more suitable for controlling whiteflies, particularly during fruiting period. Proper selection of effective pesticides against the pest, but less harmful to natural enemies and also good timing of their applications are essential in formulating an Integrated Pest Management (IPM) programme for whiteflies.

Keywords: Brinjal; insecticides; Macrolophus caliginosus; tomato; Trialeurodes vaporariorum (search for similar items in EconPapers)
Date: 2012
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