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http://dx.doi.org/10.5656/KSAE.2010.49.4.333

Insecticidal effects of Chitosan-formulated etofenprox and α-cypermethrin against Myzus persicae and Aphis gossypii (Homoptera: Aphididae)  

Seo, Mi-Ja (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Kang, Min-Ah (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Kwon, Hye-Ri (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Yoon, Kyu-Sik (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Kang, Eun-Jin (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Yu, Yong-Man (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Youn, Young-Nam (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Youn, Young-Nam (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
Publication Information
Korean journal of applied entomology / v.49, no.4, 2010 , pp. 333-342 More about this Journal
Abstract
The possibility of commercializing the controlled release of chitosan carrier nano formulation was examined with mortalities and population increase rates of Aphis gossypii and Myzus persicae after treatment of 2 ${\alpha}$-cypermethrin nano type formulations of different chitosan carrier molecular weight (M.W. 3,000 and 30,000) and 2 etofenprox nano types of chitosan content (70% and 80%). After 14 days of treatment, ${\alpha}$-cypermethrin nano formulation showed over 40% mortality against A. gossypii. Therefore, it was confirmed that the insecticide release was controlled through chitosan carrier. Results of the investigation of insecticidal activity of ${\alpha}$-cypermethrin nano formulation showed there were no differences between nano types at 4 days after treatment. However, after 14 days, the population increase rate treated with chitosan M.W. 30,000 formulation was -0.037, much lower than that of M.W. 3,000 formulation with 0.231. The result exhibits that chitosan M.W. 30,000 formulation would be a suitable controlled release formulation. On the other hand, etofenprox formulations didn't show any significant insecticidal effect or persistency difference against both aphid species.
Keywords
Nano particle; Etofenprox; ${\alpha}$-cypermethrin; Chitosan carrier; Aphis gossypii; Myzus persicae;
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Times Cited By KSCI : 5  (Citation Analysis)
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