Take wheat scab as an example to illustrate how to control the epidemic of plant diseases

In line with the policy of giving priority to prevention, combining prevention and control, and comprehensive prevention and control, wheat scab is a typical multi-cycle disease. Multi-cycle diseases are mainly determined by the epidemic speed, because the occurrence and epidemic of the disease are mainly caused by reinfection. Caused by the disease, the pathogen is relatively sensitive to environmental conditions, and its prevention and control strategies are mainly aimed at re-infection of the disease. The main prevention and control methods are the use of horizontal disease-resistant varieties and the spraying of protective fungicides. Hope this helps.