At present, it is the high incidence of watermelon anthracnose that blooms in summer. The actual production shows that the terrain is low, the drainage is poor, the nitrogen fertilizer is used too much, the ventilation is poor, and the severe crop land is more serious.
Symptoms: Watermelon leaves begin to be immersed in spots. The surrounding area often has a yellow-brown halo. The middle of the lesion is darkened and dark brown, and concentric ringing appears. It is easy to break when dry. Mature fruit infections are immersed in water-soaked brown spots, and sometimes there are cracks in the depressions. When the humidity is high, it is easily rotted.
Control methods can be used 25% Prochlorin EC 1000 times, or 50% of the protective power wettable powder 1500 times liquid and other agents for spray control.
Foley catheter, HSG catheter, Cervical ripening balloon
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