When do grapes apply potash fertilizer?

When to apply potash to grapes? How to apply well? Potassium is important throughout the grape's life cycle, especially in larger quantities during fruit growth. Therefore, grapes are known as "potassium" crops. Potassium fertilizer can promote grape fruit hypertrophy and ripeness, improve variety and storability, promote branch thickening growth and ripeness, and improve its ability of cold resistance, drought resistance, high temperature resistance and disease and insect resistance. After grape fruit setting to fruit color conversion period, according to orchard soil fertility, each mu of vineyard topdressing 5~10 kg potassium sulfate, can also spray foliar potassium dihydrogen phosphate solution, 7-15 days once, continuous spray 2-3 times. It has significant effect on promoting grape enlargement, early ripening, accelerating vine aging and improving grape resistance. At the same time, it can also inhibit grape anthracnose, black pox and other major diseases. Foliar fertilizer should be sprayed before 9:00 a.m. and after 5:00 p.m., and should not be sprayed at noon high temperature. Both sides of the leaves should be sprayed evenly, spraying fertilizer solution 60 kg per mu is good. Click for more nitrogen, phosphorus and potassium application techniques Click for more fertilizer application techniques Click for more grape cultivation techniques