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| Primary study on control efficacy of soil-borne plant diseases with mixtures of antagonistic Trichoderma atroviride T95 and Chaetomium globosum ND35 |
| LI Zhao-fang |
| Department of Resources and Environment，Heze University，Heze 274000，Sandong，China |
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Abstract Control efficacy against Pythium damping-off and Rhizoctonia rot have been preliminarily investigated with each single antagonistic fungal strains and their mixed fungal strains of C. globosum ND35 and T. atroviride T95.The results of dual culture on PDA plate showed the strongest inhibitions of Pa were the antagonist combination of ND35+T95 with 73.36%.respectively. Their inhibitions were higher than that of single strain of ND35. But inhibition of Rs by the combination ND35+T95 and single strain of T95 and ND35 were little difference.The results in Greenhouse indicated that biological control efficacy of Pythium damping-off of bean vegetables by mixtures of two antagonistic fungal strains were higher than that of single antagonistic fungal strains T. atroviride T95.The results of experiment in field demonstrated that the best control efficacy was the combination ND35+T95 with 49.05% and 60.37%. And biological control efficacy by mixtures of antagonistic fungal strains were higher than that of single antagonistic fungal strains T. atroviride T95. But there was some difference in compared with control of chemical fungicide.
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Received: 08 April 2010
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