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| The Controlling Effects of Emulsion of Stemona, Chinaberry alkali and Tobacco alkali on Myzus persicae and Their Residual Test in Lettuce |
| Gaoliang |
| Weifang Agricultural Production Imp. and Exp. Group Corporation; Shandong Province 261041 |
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Abstract A botanical insecticide is made from stemona, Chinaberry and tobacco. The controlling effects of 1.1% emulsion diluted with 1500, 3000 and 6000 water on Myzus persicae were: indoors, 91.6%～99.6% after spraying 1,3 and 5 days; in the fields, the effects of it diluted with 800 and 1000 water were 90.6%～98.0% after spraying above same days. They were equal to or better than the results of 50% kangyawei wettable powder diluted with 2500 water. The residue of this insecticide disappeared quickly in the lettuce l...
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Received: 14 August 2001
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