Prevention and control of dead leaves caused by leek

The disease is the main disease that protects the leek. The affected parts were all water-stained, the leaves and flowers were dark green, while the roots and bulbs were light brown, and the diseased parts had no obvious edges. When it is wet, the diseased part produces white and mildew, and when it is dry, the diseased leaves turn yellow. The root and stem soft rot of the infected plant can not absorb water and nutrients normally, causing the ground part to be folded or dried. The occurrence of epidemics is related to drainage. When controlling, it is necessary to pay attention to drainage and dehumidification and crop rotation. In the early stage of the disease, 25% of toxic mycorrhizal 600 times liquid, or 58% of metalaxyl manganese zinc 500 times liquid or 40% ethyl aluminum phosphate 200-300 can be used. The liquid solution is 40-50 kg per acre, once every 7-10 days. Linyi Fertilizer Network Copyright

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