Cabbage planting: how to prevent and cure cabbage downy mildew?

How to prevent and cure cabbage downy mildew? Please introduce the harm of cabbage downy mildew: cabbage downy mildew mainly harms the leaves, which initially produces chlorotic spots on the leaves, then expands into polygonal or irregular spots limited by the veins of the leaves, the size of the spot is 5mm or larger, yellow or yellowish brown, slightly sunken. When wet, there is a white mildew layer on the back of the disease spot. When the disease is serious, there are a series of disease spots on the leaves, resulting in the drying up and death of the leaves. Prevention and control of downy mildew of cabbage: 1500 times solution of 50% enamylmorpholine or 58% metalaxyl manganese zinc or 64% chloromethyl manganese zinc solution or 75% chlorothalonil solution can be sprayed once every 5-7 days. In severe cases, it can be sprayed once every 3-5 days, which can effectively prevent and cure cabbage soft rot. Due to the recent increase in humidity, cabbage soft rot has also occurred, which can be comprehensively controlled. 58% metalaxyl manganese zinc 600-fold solution 20% chlorpromazole 1500-fold solution or 50% enamylmorpholine 1500-fold solution can be sprayed once every 5 days. Click to get more cabbage planting techniques click to get more vegetable planting techniques