The celery virus disease, also known as mosaic disease, crinkle leaf disease, and cramps, etc., has a severe onset in hot and dry years. After the onset of the virus disease is difficult to control, it should do preventive work.
1 timely sowing, nurturing strong seedlings, strengthening the field after the planting of fertilizer and water management, promote root growth and development, improve plant resistance to disease. Before planting, the diseased plants were eliminated. In the high temperature and dry season, seedlings should be shaded and shaved. During the whole growth period, it is necessary to pay attention to the timely control of aphids. Pay attention to pastoral hygiene, remove weeds and eliminate the source of poison.
2 Chemical control: 0.1% potassium permanganate solution or 20% Viral 1000-fold or mushroom proteoglycan 300-fold or Ningnanmycin 400-fold or anti-toxin 700-fold or 5406 cytokinin 300-fold can be used. In the initial stage of disease, it is administered once every 7 days, and sprayed 3 to 4 times continuously. It can also be used to control 1.5% of diseased plants and 1000 times of the liquid. It is controlled at the seedling stage or the early stage of disease, and is administered once every 10 to 15 days. Continuous spraying 3~ 5 times.
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