Inhibitory Effects of 12 Chemical Agents against Alternaria alternata  

作　　者：Shen Hong Zhang Jiatao Cui Zhiyan Sun Guangjun Li Bin Zhang Yongfeng Xu Chuantao Ai Yongfeng Song Guanglong Ji Xiuting Wang Xiaoqiang 

机构地区：[1]Guizhou Provincial Company of China National Tobacco Corporation,Guiyang 550081,China [2]Shaanxi Provincial Company of China National Tobacco Corporation,Xi'an 710061,China [3]Sichuan Provincial Company of China National Tobacco Corporation,Chengdu 610017,China [4]Institute of Tobacco Research of Chinese Academy of Agricultural Sciences,Qingdao 266101,China

出　　处：《Plant Diseases and Pests》2020年第4期20-23,共4页植物病虫害研究（英文版）

基　　金：Supported by Natural Science Foundation of Shandong Province;Science and Technology Project of Guizhou,Shaanxi and Sichuan Provincial Company of China National Tobacco Corporation(ZR2018BC037,201910,2019-ZY-1,SXYC-KJ-2017-01,SCYC201703)。

摘　　要：[Objective]The paper was to screen highly efficient fungicides for the prevention and control of tobacco brown spot(Alternaria alternata).[Method]The inhibitory effects of 12 chemical agents against A.alternata were determined indoors by mycelium growth rate method.[Result]Toxicity test showed that 30%kresoxim-methyl·boscalid SC had the best inhibitory effect,with an EC_(50)of 1.05μg/mL,followed by 9%pyraclostrobin CS,with an EC_(50)of 2.09μg/mL.As a broad spectrum protective fungicide,77%copper calcium sulfate WP showed a low sensitivity against A.alternata in the petri dish test since it had a mechanism of action different from that of other chemical agents.[Conclusion]The study lays the foundation for subsequent screening of fungicides for the prevention and control of A.alternata in the field.

关 键 词：Tobacco brown spot Alternaria alternata FUNGICIDE Sensitivity 

分 类 号：S482.2[农业科学—农药学]