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Control Efficacy of 5% Dimethomorph DPC on Cucumber Downy Mildew |
ZHU Fa-di1,XIE Xue-wen2,LI Jian-ming2 ,GU Zu-min1*,LI Bao-ju2* |
1Plant Protection College,Shenyang Agricultural University,Shenyang 110866,Liaoning,China;2 Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China |
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Abstract The control efficacy of 5% Dimethomorph DPC on cucumber downy mildew caused by Pseudoperonospora cubensis was evaluated by pot experiment and field plot trial method. The results showed that 5% Dimethomorph DPC presented a good control effect on cucumber downy mildew. The pot trial efficacy of 5% Dimethomorph DPC with dosage of 168.75 g a.i.·hm-2 on cucumber downy mildew was 89.13%,and the final field control efficacy of plot trial was 86.64%,with a dosage of 168.75 g a.i.·hm-2 dusting for 3 times at 7 days intervals. There was not any phytotoxicity on cucumber.
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Received: 16 April 2014
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