How to prevent and control downy mildew on spinach leaves?

Spinach downy mildew  

    Downy mildew mainly damages spinach leaves. This downy mildew is severe in spinach fields with high planting density, poor field ventilation, low-lying waterlogged areas, and low temperature with high humidity. Control methods: 

   
    1. Prepare the soil in time. After turning and sun-drying the soil, apply sufficient organic base fertilizer. And spray chemicals to treat the soil, while spraying New High Lipid Film 800-fold solution, greatly improving the utilization rate of the effective ingredients of the chemicals. Select excellent disease-free spinach varieties, and treat the seeds by soaking and seed dressing with a seed coating agent such as New High Lipid Film 800-fold solution, which can repel underground pests and diseases, kill pathogens, isolate virus infection, without affecting the imbibition and swelling function of spinach seeds, strengthen respiration intensity, improve the seed germination rate, sow at the right time, and plant at a reasonable density. 

    2. During the spinach seedling stage, pay attention to reasonable irrigation and topdressing, with a reasonable combination of nitrogen, phosphorus and potassium fertilizers, and timely spraying of Zhuangjingling to promote robust growth of spinach plants, improve disease resistance, promote thick leaves, fresh and tender leaf color, and a strong natural taste.

 
    3. Chemical control: In the early stage of spinach downy mildew, alternately spray 90% phosethyl-Al 800-fold solution + potassium permanganate 1000-fold solution + New High Lipid Film 800-fold solution 3—4 times to reduce the spread of downy mildew.