Assessment of Alternatives of Benzimidazole Fungicides for Management of Tomato Leaf Mould Caused by Cladosporium fulvum
Serious resistance to benzimidazole fungicides has developed in tomato leaf mould disease caused by Cla dosporiumfulvum.In this study, 6 isolates of three different phenotypes of sensitivity to benzimidazole fungicide were used to assess the alternative fungicides.Among the 10 tested candidates, procymidone showed significantly stronger activity inhibiting mycelial growth of C.fulvum with mean EC50 of 0.53 mg/L and kresoxim-methyl showed signifi cantly stronger activity inhibiting conidium germination with mean EC50 of 2.10mg/L.When further evaluatéd in tomato plants, kresoxim-methyl and procymidone showed better curative activity and better protective activity, respec tively.In tomato fields, procymidone, kresoxim-methyl and the mixture of them all provided satisfactory efficacy against C.fulvum.If the potential risk of resistance development was considered, the mixture of procymidone and kresoxim-methyl was a more suitable alternative for management of benzimidazole-resistant C.fulvum.
Cladosporium fulvum fungicide resistance management procymidone kresoxim-methyl
C.Q.Zhang Y.H.Liu X.Shen Y.Zhang
Department of Crop Protection, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China Hangzhou Research Institute of Vegetables, Hangzhou 310027 China
国内会议
中国植物病理学会化学防治专业委员会第七届中国植物病害化学防治学术研讨会
海口
英文
150-159
2010-11-20（万方平台首次上网日期，不代表论文的发表时间）