Chemical control can be done by spraying 70% thiophanate-methyl 1000 times solution or 75% chlorothalonil 1000 times solution on the leaves of the whole plant at the initial stage of the disease, once every 7 ~ 10 days and continuously for three times.
At the same time, pay attention to the application of potassium fertilizer
Potassium dihydrogen phosphate can be selected as foliar fertilizer.
You can spray this formula.
For reference only, welcome to pay attention to praise, thank you.
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