Downy mildew harms spinach leaves how to control spinach downy mildew

Downy mildew of spinach

Downy mildew mainly harms spinach leaves. The downy mildew is serious in spinach fields with high planting density, poor ventilation, low-lying water, low temperature and high humidity. Prevention and control methods:

1. Prepare the land in time. After turning the ground, apply enough organic base fertilizer. The soil was treated with chemical spray and 800-fold liquid spray of new high-fat film was sprayed at the same time, so as to greatly improve the utilization rate of effective components. It is necessary to select excellent and disease-free spinach varieties and treat the seeds with seed soaking and seed coating agents such as new high-fat film 800 times liquid, which can ward off underground diseases and insects, kill bacteria, isolate virus infection, and do not affect the germination and swelling function of spinach seeds. improve seed germination rate, timely sowing, reasonable close planting.

2. Spinach seedling stage should pay attention to reasonable irrigation and topdressing, reasonable combination of nitrogen, phosphorus and potassium fertilizer, and timely spraying Zhuangjianling to promote the healthy growth of spinach plant, improve disease resistance, make leaves thick, fresh and tender, and have strong natural taste.

3. Chemical control: at the initial stage of the onset of spinach downy mildew, alternately spraying 90% ethanophosphate aluminum 800x solution + potassium permanganate 1000 fold solution + new high lipid membrane 800x liquid 3mi 4 times to reduce the spread of downy mildew.