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| Effects of Different Amount of Organic Fertilizer on Populations of Aphis gossypii Glover and Tetranychus urticae Koch and the Yield of Cucumber |
| Zhang Baoxiang; Du Xiangge |
| College of Agronomy and Biotechnology; China Agricultural University; Beijing 100094 |
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Abstract The effects of different level of organic fertilizer on Aphis gossypii and Tetranychus urticae populations and yield of cucumber were investigated.The results showed that the number of A.gossypii and T.urticae populations increased when the application of organic fertilizer increased.The average number of A.gossypii in the high fertilizer treatment plot was 4.10 per plant,which was 2.56 times,5.13 times and 8.20 times compared to that of middle,low and control treatment respectively .The average number of T...
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Received: 07 September 2006
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