At present, peanuts planted in spring in the peanut growing areas of our province are basically in the seedling stage. Due to climate and other reasons, the disease is more serious this year. The following analysis of the causes and prevention methods.
Due to low ground temperature, high humidity, large planting depth, soil-heavy land mass, heavy land mass, poor seed quality, and many factors, peanut sprouts suffer from low temperature and oxygen deficiency, high humidity in the field, and suffer from varying degrees of chilling injury, easily resulting in peanuts. Root rot, stalk rot, bacterial wilt and other common diseases occur at seedling stage. At present, temperatures in various regions gradually recover, which is conducive to the rapid recovery of peanuts.
The focus of current management is to do a good job of cultivating peanut seedlings early, increase ground temperature, enhance drought resistance, increase soil looseness, stimulate roots to lower and promote the growth of peanut leaves. For soil mass and saline-alkali soil compaction plots, the cultivator is more effective and meaningful. In the cultivator plan, grasp the principle of “heads are shallow, two are deep, and three are not injuring the rootsâ€. In conjunction with planning, weeds must be removed from the fields to prevent them from competing with peanut seedlings for nutrients. For plots with weak seedling growth, promotion should be promoted to promote vegetative growth. For under-application of base fertilizer, plots with sandy land or poor seedlings need to be sprayed with chlorothalonil, bactericides such as bactericide, potassium dihydrogen phosphate, or green leaf treasure, etc. Spray once every 7 days, spraying 2-3 times continuously. For severely diseased seedlings that have already died, they should be removed from the field early, buried deep, or burned. Laminated lime should be applied to the diseased plants to prevent the spread of pathogens in the fields.
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