Cold shed leeks gray mold prevention and control technology

Botrytis cinerea is an important disease commonly occurring in winter and spring cold sheds. Most of the disease occurred in early December. With the growth and development of amaranth, the condition gradually worsened, and it can continue in the late April of the next year. The severe reduction of production is 20%-30%, and the diseased leaves are often accompanied by mildew and the quality is degraded. The prevention and treatment method is: selecting resistant varieties such as Huangmiao, Keji No. 1, Zhongyu No. 2, and ferrets. Use no drip film, timely release air, reduce the humidity inside the shed, and timely remove the diseased leaves buried or burned. At the beginning of the disease, foliar spray 50% carbendazim WP 500 times solution, or 70% methyl thiophanate 800 times solution, or 50% moldy WP 1000 times solution, or 50% phlegm hygroscopicity Powder 1500 sputum, 40-50 kg per acre, spray once every 5-7 days, even spray 2-3 times. Pay attention to the medication. In case of cloudy days, it is best to use chlorothalonil or keiling smoke to prevent and cure.

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