Winter turning spring pesticide execution gray mold

The seasonal turn of winter to spring, the grey mold in the vegetable shed began to ravage, threatened the harvest of the leeks, and the application of pesticides was carried out in physical and chemical forms to execute grey mold. With the growth and development of leeks, the condition gradually worsens, and can continue until the second half of next year, a serious reduction of 20% -30%, and diseased leaves often accompanied by musty, so that the quality of decline. Its prevention and control methods are: selection of disease-resistant varieties such as Huang Miao, Keshi No. 1, Zhonglu No. 2, Xuelu and so on. The use of non-drip film, timely release, reduce the humidity within the greenhouse, timely removal of the diseased leaves 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% Polydoxifen WP 1000 times, or 50% acetaminophen wettable. Powder 1500 phlegm liquid, 40-50 kg per acre liquid, spraying once every 5-7 days, even spray 2-3 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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