Comparative Toxicities of Pyriproxyfen and Thiamethoxam against Sweetpotato Whitefly, Bemisia tabaci (Homoptera: Aleyrodidae)

Kim, Gil-Hah; Lee, Young-Su; Lee, So-Young; Park, Eun-Cheol; Kim, Jung-Hwa

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자료유형: 학술저널

저자정보: Kim, Gil-Hah (Department of Agricultural Biology, College of Agriculture, Chungbuk National University) Lee, Young-Su (Department of Agricultural Biology, College of Agriculture, Chungbuk National University) Lee, So-Young (Department of Agricultural Biology, College of Agriculture, Chungbuk National University) Park, Eun-Cheol (Department of Agricultural Biology, College of Agriculture, Chungbuk National University) Kim, Jung-Hwa (Department of Agricultural Biology, College of Agriculture, Chungbuk National University)

저널정보: 한국응용곤충학회 Journal of Asia-Pacific Entomology Journal of asia-pacific entomology 제5권 제1호

발행연도: 2002.1

수록면: 117 - 122 (6page)

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This study was conducted to determine the comparative toxicities of pyriproxyfen and thiamethoxam on the sweetpotato whitefly, Bemisia tabaci biotype B. Ovicidal effect of pyriproxyfen (100 ppm) showed 94.5%, which was 8 higher times than that of thiamethoxam (50 ppm) at the recommended concentration, The nymphal mortalities of both insecticides treated on the 3rd instar stage were over 85%. Thiamethoxam was very effective against adults, but the activity of pyriproxyfen was relatively low. Longevity and fecundity of newly emerged adults from the treated pupae of two chemicals were adveresely affected. Unlike pyriprezyfen, thiamethoxam highly showed root up-take systemic effect on nymphs and adults of B. tabaci. Pyriproxyten and thiamethoxam showed residual effects against B. tabaci and particularly, thiamethoxam maintained high control effect with over 90% up to 7 days after treatment. In the control efficacy test on B. tabaci, the control values of pyriproxyfen and thiamethoxam at 9 days after treatment were 92.0 and 99.3%, respectively.

#Bemisia tabaci #pyriproxyfen #thiamethoxam #sublethal effect #systemic effect #residual effect

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