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| Toxicity and Controlling Effect of Thiamethoxam against Bemisia tabaci B-biotype |
| Xu Baoyun; Xiao Lifeng; Wu Qingjun; et al. |
| Institue of Vegetable and Flowers; Chinese Academy of Agricultural Sciences; Beijing 100081 |
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Abstract Both foliar spray in laboratory and field trails were conducted to evaluate the effect of thiamethoxam 25 % WG against adults of Bemisia tabaci B-biotype on cucumber seedlings. The laboratory bioassay indicated that the activity of thiamethoxam was 290-fold as much as chlopyrifos, and the results in field trials showed that the controlling effects reached 95.39 % in 3 days. The suitable dosage concentration was 1∶5 000-6 000 dilution for foliar spray.
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Received: 10 February 2004
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