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| Effect of the bio-organic fertilizer with antagonistic bacteria against tobacco bacterial wilt on soil microbial communities and the disease resistance |
| Received:April 23, 2014 |
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| Abstract: |
| The effect of bio-organic fertilizer with antagonistic bacteria against tobacco bacterial wilt on soil microbes
and the disease resistance were researched by field experiment. The results revealed that the incidence of tobacco bacterial
wilt in the treatment 3 and 4 of adding the bio-organic fertilizer decreased evidently. Compared with the local conventional
fertilization, the incidence of the disease decreased by 21.9%, 25.0% in T3 and T4, respectively, while the yield of fluecured
tobacco and the proportion of mid-high grade tobacco leaves increased by 5.7%, 5.3% and 2.3%, 2.6%, respectively.
The amount and species of rhizosphere microorganisms were much more. While the amount of soil bacteria observably
increased by 218.5% with less species once the tobacco bacterial wilt occurred. It could conclude that the bio-organic
fertilizer with antagonistic bacteria against tobacco bacterial wilt could improve the ecological condition to inhibit the
growing of pathogenic bacteria to decrease the occurrence and improve tobacco quality. |
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