Prediction of the occurrence trend of pests and diseases in the middle and late stages of corn

Based on the current occurrence base of pests and diseases, corn growth and cultivation management measures, combined with comprehensive analysis of future weather conditions, it is expected that the overall occurrence of pests and diseases in corn in the middle and later stages of this year will be moderate to heavy. Among them, migratory pests such as fall armyworm, cotton bollworm, armyworm, and beet armyworm pose a great threat to corn production, while diseases such as large spot disease, southern rust disease, and ear rot disease are more prevalent in some areas; The peak period of harm is from late July to mid September.