Comparative Study on the Efficacies of 11 Chemical Agents against Taro Soft Rot Caused by Pectobacterium aroidearum  

作　　者：Dongkun Wang Xiuting Ji Huaixu Zhan Chengpeng Zheng Hao Zong Xiaolei Tan Xiuchun Du Weimin Wang Jingjing Wu Fenglong Wang Xiaoqiang Wang 

机构地区：[1]Tobacco Research Institute,Chinese Academy of Agricultural Sciences,Qingdao 266101,China [2]Shandong Linyi Tobacco Co.,Ltd.,Lin-yi 276000,China [3]Jiaozhou Branch of Qingdao Tobacco Co.,Ltd.,Qingdao 266300,China [4]China Tobacco Zhejiang Industry Co.,Ltd.,Hangzhou 310000,China

出　　处：《Plant Diseases and Pests》2021年第2期21-23,26,共4页植物病虫害研究（英文版）

基　　金：Supported by Research and Demonstration of Key Technologies for Rhizome Disease Control in Yimeng Tobacco Area(201906);Science and Technology Innovation Project of Chinese Academy of Agri-cultural Sciences(ASTIP-TRIC04);Demonstration of Green Degradation Technology and Resource Utilization of Tobacco Straw(202013)。

摘　　要：[Objective]The paper was to screen the effective agents for effectively controlling the occurrence and prevalence of taro soft rot.[Method]The fungicidal effects of 11 fungicides on taro soft rot were determined by inhibition zone method.[Result]0.3%Tetramycin,25%bromothalonil,3%Zhongshengmycin and 30%zinc thiazole had better antifungal effect on Pectobacterium aroidearum at recommended concentration.The indoor toxicity of four fungicides showed that the EC50 of 0.3%tetramycin AS was the smallest of 0.6μg/mL,indicating that tetramycin had the largest toxicity and the best inhibitory effect against P.aroidearum;followed by 25%bromothalonil EC and 3%Zhongshengmycin WP,with the EC_(50) of 2.57 and 97.72μg/mL,respectively;the inhibitory effect of 30%zinc thiazole SC against P.aroidearum was the poorest.[Conclusion]The study provides a reference for screening out new and efficient chemical agents against taro soft rot.

关 键 词：Taro soft rot Pectobacterium aroidearum EFFICACY EC_(50) Chemical agents 

分 类 号：S436.32[农业科学—农业昆虫与害虫防治]