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Toxicity Experiments of Tea Saponin Mixed with Dimethoate against Lipaphis erysimi |
Wang Xiaoyi; Huang Bingqiu |
aboratory of Insect Toxicology; South China Agricultural University; Guangzhou 510642 |
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Abstract Toxicity of tea saponin,dimethoate and mixture of the two compounds at different concentrations on turnip aphid Lipaphis erysimi was examined. Results showed that tea saponin itself had low toxicity on turnip aphid,but it could significantly increase the effect of demethoate. Mortality of aphid treated with dimethoate solutions containing tea saponin was higher than that of dimethoate solutions at the same concentrations. The LC 50 s of dimethoate,dimethoate mixed with 500mg/L tea saponin and di...
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Received: 01 January 1900
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