Prevention and Control of Cold Botchoi Grey Mold
, And can be extended to the end of April next year, a serious reduction of 20% to 30%, and diseased leaves often accompanied by musty, so that the quality decline. The prevention and control method is:
Disease resistant varieties such as Huang Miao, Keshi No. 1, Zhonglu No. 2, Xuelu and so on. No drip film, timely release of air, reduce the humidity in the greenhouse and remove the diseased leaves in time
Buried or burned. In the early stage of disease, 50% carbendazim WP may be sprayed with 500 times, or 70% thiophanate-methyl 800 times, or 50% polymylon may be used.
Wet powder 1000 times, or 50% epothilone WP 1500 phlegm, 40 50 50 kg per acre, spraying once every 5 7 7 days
, spray 2 to 3 times. Note alternate medication. In case of cloudy days, it is best to use Chlorothalonil or Sulfonamide as a smoke suppressant.
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