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《Modern Agrochemicals》 2016-01
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Joint-toxicity of Mixtures of Pyraclostrobin with Thiophanate-methyl Against Two Kinds of Colletotrichum spp.

CHEN Juan-fang;REN Zuo-hua;PENG Wei-ye;LIU Xiang;ZOU Xi;LIU Er-ming;College of Plant Protection, Hunan Agricultural University;Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests;Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China;  
In order to improve the control effect and delay the resistance of thiophanate-methyl, the toxicities of pyraclostrobin, thiophanate-methyl and their different ratio mixtures against two kinds of Colletotrichum spp. were determined by the methods of mycelial growth and conidial germination assay, and the joint-toxicities of mixtures were evaluated in this paper. The results showed that the mixtures of 1 ︰2, 1︰4, 1︰16 and 1︰32 all exhibited additive effect against mycelial growth and conidium germination of C. gloeosporioides and C. capsici. While the 1 ︰ 8 mixture showed obviously synergistic interaction with SR of 1.98 and 1.93 to C. gloeosporioides, 1.95 and 2.11 to C. capsici, respectively.
【Fund】: 南方粮油作物协同创新中心(MCSMP20120802);; 湖南农大大学生创新课题(XCX1591)
【CateGory Index】: S436.418.11
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