The control points of melon powdery mildew
Melon powdery mildew is a fungal disease that can harm pumpkins, melons, cucumbers, watermelons, etc. It is one of the major diseases that seriously affect the yield and quality of melons.
Performance symptoms: The main harm to the tablets, but also damage the petiole and stems. Leaves the melon yellow and brittle, forming irregular white spots.
Cause of the disease: Powdery mildew is susceptible to infection and spreads when the temperature is 16-24°C and the air humidity is 751â„4 or so. Even heavy rain, heavy humidity, heavy damage. Therefore, it was found that the disease should be prevented and controlled as soon as possible and spread.
Control methods: (1) Remove fire or deep-buried crop residues in time.
2 The plant should be densely planted in a timely manner, pruned in time, and the branches should be cleared and buried in time. Increase the air and light transmittance of the plant population.
3 The melons in the greenhouse must be ventilated and dehumidified in time.
4 Reasonable fertilization, proper control of nitrogen fertilizers, and increased use of phosphorus and potassium fertilizers. And use silicon, zinc, magnesium, and other micro-fertilizers to enhance crop disease resistance and improve quality.
5 Promptly fight drugs in the early stage of disease, control hazards and spread. Optional agents include methyl moxibustion, chlorothalonil, carbendazim and others.
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