农药学学报2011，Vol.13Issue(6)：591-596,6.DOI:10.3969/j.issn.1008-7303.2011.06.06
吡唑醚菌酯与苯醚甲环唑混合物对茄链格孢的联合毒力及其对马铃薯产量的影响
Joint-toxicity of mixtures of pyraclostrobin with difenoconazole against Alternaria solani and effect of their synergistic mixture on potato yield
摘要
Abstract
In order to clarify the synergistic interaction of pyraclostrobin and difenoconazole against Alternaria solani, the toxicity of pyraclostrobin, difenoconazole and their mixtures at different ratios against Alternaria solani was determined by mycelial growth rate test and conidial germination assay, the joint-toxicity of the two fungicides was assessed with Wadley formula, and the efficacy incontrolling potato early blight and the effect of their synergistic mixtures on potato yield was assessed through the field trials. The result showed that the mixtures of 1: 1,2: 1,3: 1,4: 1,5: 1,1:2 and 1:5 exhibited synergistic interaction against the mycelial growth of A. Solani, the synergistic effects of the 1:2 mixture was most obvious with synergistic ratio (SR) of 2. 05, and the 1: 2 mixture exhibited additive effect against conidial germination with SR of 1. 29. The result of field trials on controlling efficacy showed that the tank mixture (1:2, W/W) exhibited significantly higher efficacy in controlling potato early blight than single agent alone with the same rate of application and the other common fungicides, and the mixture gave 46. 8% of the yield increase ratio of potato, significantly higher than that given by the fungicides as control.关键词
吡唑醚菌酯/苯醚甲环唑/茄链格孢/马铃薯/增效作用/防治效果/增产率Key words
pyraclostrobin/difenoconazole/Alternaria solani/ potato/synergistic interaction/controlling efficacy/ yield increase ratio分类
农业科技引用本文复制引用
范子耀,王文桥,孟润杰,韩秀英,张小风,马志强,刘颖超..吡唑醚菌酯与苯醚甲环唑混合物对茄链格孢的联合毒力及其对马铃薯产量的影响[J].农药学学报,2011,13(6):591-596,6.基金项目
现代农业产业技术体系建设专项"马铃薯产业技术体系病害防控"(nycytx-15). （nycytx-15）
