It is easy to become epidemic in the period of bloom to pod of broad bean plants, especially in conditions of lower temperature and rainy days.
It is easy to become epidemic in the period of bloom to pod of broad bean plants, especially in conditions of lower temperature and rainy days.
发病盛期为开花～结夹期，低温多雨的气候发病重，发病程度与温度、田间湿度及土壤肥力密切相关。