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| Studies on Controlling Effect of Oligosaccharide on Corynespora Leaf Spot of Eggplant |
| HUANG Da-ye 1，XIANG Zhao-hui 2，ZHOU Shi-wei 2，WANG Zhang-wei 2，MENG Xiang-sheng 2，WANG Jing-zhi 2，ZENG Fan-yong 2，CAO Chun-xia 1*，WAN Zhong-yi 1* ，YANG Zi-wen 1 |
1 Hubei Biopesticide Engineering Research Center，Wuhan 430064，Hubei，China；2 Agriculture Bureau of Hefeng
County，Enshi Prefecture of Hubei Province，Enshi 445800，Hubei，China |
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Abstract This paper studied the effect of oligosaccharide on controlling eggplant Corynespora leaf spot
and reducing the dose. The results indicated that spraying oligosaccharide with 100 μg·mL-1 concentration for 3
times，the controlling effect on eggplant Corynespora leaf spot was pretty good，and the control effect was up to
62.56%. The activities of SOD，POD and CAT were obviously increased. After spraying oligosaccharide with 100
μg·mL-1 concentration for 3 times，then spray boscalid with 50 μg·mL-1 concentration，the control effect was
similar to that of only spraying boscalid with 100 μg·mL-1 concentration. Both methods could obviously reduce the
disease index of eggplant Corynespora leaf spot，and the effect of reducing the dose was obviously observed.
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Received: 24 April 2017
Published: 06 June 2017
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