General Guideline for The Control of Potato Late Blight(Phytophthora infestans) in Switzerland

作     者：Cao Keqiang(Department of Plant Protection, Agricultural University of Hebei, Baoding 071001 )Forrer H. R. Fried P. M.(Swiss Federal Research Station for Agroecology &Agriculture, CH-8046, Zurich) 

出 版 物：《河北农业大学学报》 (Journal of Hebei Agricultural University)

年 卷 期：1997年第3期

页      面：16-20页

学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治] 

基　　金：瑞士农业部科技攻关项目 

主　　题：Potato late blight Phytophthora infestans Disease epidemic 

摘      要：Historical weather data of recent seven years from 22 weather stations in Switzeriandwere analysed according to crucial weather conditions for the epidemic of potato late blight(Phytophthora infestans). Close relationship was found between disease incidence and the crucial weather conditions. Checking the growing season with crucial weather conditions by treatment intervals of 6, 9 and 12 days, the treatment times for each potato growing region wereachieved. June has been proved to be the most important month for both disease developmentand chemical treatment. Although because of the great variation of the weather, such suggestions are rather general. It is beneficial for people to understand the ecological difference amongdifferent regions and to get a perfect disease management.