Identification and Prevention of Viral Diseases in Chinese Cabbage

Cabbage virus disease, also known as “sporadic disease” or mosaic disease, occurs universally and causes serious damage. In addition to endangering Chinese cabbage, it also invades various cruciferous vegetables such as radish, cabbage, mustard, pakchoi, and rapeseed. After the Chinese cabbage is infected, mottled or mosaic leaves are often formed. On the main vein, brown spots are formed on the veins of the main depression. On some of the inner leaves, there are a lot of gray-brown round necrotic spots. Occurrence characteristics: The pathogen is a virus. The main is the turnip mosaic virus, followed by the cucumber mosaic virus. Cabbage seedlings are most susceptible to disease, at this time the high temperature and drought, the incidence of serious; and early maturing cabbage, radish, cabbage and other neighboring or flowering planting, the incidence is early and heavy. Control methods: 1 selection of planted disease-resistant seed; avoid premature sowing; planting hoe planting for ridge; prevent premature deficiencies. 2 Tackling disease prevention and eradication of locusts before they migrated to the poisonous plants. In the early stage of onset, 20% virus A500 times liquid and NS-83 antibiotic agent 100 times liquid were sprayed, sprayed once every 15 days, and sprayed 2-3 times. China Agricultural Network Editor

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