| Biological effects of different application amount of bio-organic fertilizer on controlling cotton Verticillium wilt |
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| DOI：10.7606/j.issn.1000-7601.2012.05.29 |
| Key Words: Bio-organic fertilizer Verticillium dahliae control effect number of microorganisms microbial biomass |
| Author Name | Affiliation | | TIAN Xiaoming | Shihezi University of Agriculture/ Xinjiang Key Laboratory of Oasis Ecology Agriculture, Shihezi, Xinjiang 832000, China | | LI Junhua | Shihezi University of Agriculture/ Xinjiang Key Laboratory of Oasis Ecology Agriculture, Shihezi, Xinjiang 832000, China | | WEI Changzhou | Shihezi University of Agriculture/ Xinjiang Key Laboratory of Oasis Ecology Agriculture, Shihezi, Xinjiang 832000, China | | CHU Guixin | Shihezi University of Agriculture/ Xinjiang Key Laboratory of Oasis Ecology Agriculture, Shihezi, Xinjiang 832000, China |
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| Abstract: |
| In this study we evaluated the effects of different rates of bio-organic fertilizer (BOF) in soil with different organic matter content on Verticillium dahliae, disease index, dry matter weight of plant, soil microbes and microbial biomass. The results showed that the dry matter weight of plant and soil microbial biomass were increased with amount increase of fertilization in soil with the different organic matter content, while the number of soil microorganisms increased first and then decreased. The result was the highest in the high organic matter content of soil with application of bio-organic fertilizer 10～20 g／kg and both in medium and low organic matter content of soil with application of bio-organic fertilizer 20～30 g／kg. Application of bio-organic fertilizer could significantly reduce the disease index of cotton Verticillium Wilt, and control effect was between 21.7%～75.0%. The control effect was the highest (52.6%) in the high organic matter content of soil with application of bio-organic fertilizer 20 g／kg, and the best (75.0%，55.0% ) both in medium and low organic matter content of soil with application of bio-organic fertilizer 30 g／kg. In short, the scientific and rational fertilization not only is
good for the microbial flora to a healthy and reasonable direction, but also minimizes the disease of cotton, and provide good protection for cotton growth. |
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