Xia Qiu caution against Chinese cabbage anthracnose

Chinese cabbage anthracnose can also harm cruciferous vegetables such as mustard, radish, and turnip, in addition to harming Chinese cabbage, affecting the commercial nature of vegetables, and causing a reduction in yield. Chinese cabbage anthracnose is a disease of high temperature and high humidity. It has a temperature of 26°C～30°C, a relative humidity of 95% or more, a heavily populated land, low altitude, poor drainage, excessive planting density, poor fertilizer, weak plant growth, and poor air and light transmission. When it is easy to develop.

Symptoms are identified as pale or green spots on the leaves. They appear as round or nearly round, brownish edges, slightly uplifted, slightly depressed in the center, grayish white, thin papery, translucent, and late lesions. Gray, translucent, easy to perforate. It damages the dorsal veins and shows brown spots of varying lengths and depressions. Petiole, pedicel, and seed pods are damaged, resulting in oblong or spindle-to-fusiform, brown, or gray-brown pitting lesions. When wet, the diseased area often has blush-red sticky material.

At the beginning of the disease prevention and control measures, 2% antimycotic water can be sprayed 200 times, sprayed every 5 to 6 days, and sprayed 2 to 3 times. Can also spray 80% anthraquinone omeprazole WP 600 to 800 times, or 50% chlorhexidine WP 600 to 800 times, or 50% to obtain WP 600 to 800 times, can also cure gray mold Sclerotinia and so on. In addition, it can spray 40% more Fengnong wettable powder 400 to 500 times, or 70% thiophanate-methyl wettable powder 1000 times plus 75% chlorothalonil wettable powder 1000 times, or 50% benomyl Ling wettable powder 1000 times, or 70% mancozeb wettable powder 500 times, or 25% Shi Baoke EC 3000 ~ 4000 times, spray every 7 to 10 days, even spray 2 ~ 3 Times.

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