Incidence conditions: the optimal temperature of 16-22°C, high humidity, large temperature difference between day and night, and long duration of condensation. The seedling stage is basically free from disease, and it is easy to be attacked after the scab stage.
Control methods:
(1) Planting resistant varieties.
(2) Clean farms Strengthen management, adopt formula fertilization technology, and properly plant dense plants.
(3) Chemical control 10% of the world's high 1500 times liquid, white powder net 800 times liquid spray control.
Circular UV Lamp, Quartz UV Lamp, UV Lamp Manufacturer
Ningbo Sunfine Environmental Technology Co.,Ltd , https://www.uvlightings.com