How to prevent and control powdery mildew in winter melon? Master these growing essentials
How to prevent and control powdery mildew in winter melon? Please explain effective prevention and control methods. For powdery mildew in winter melon, you can refer to the following methods for prevention and control: 1. Choose disease-resistant varieties. Choose early-to-mid maturing winter melon varieties such as Guangyou No. 1 and Huidou, or mid-to-early maturing varieties such as Guangyou No. 2, Guanxing No. 2, and Qixingzai. 2. At the early stage of the disease, spray Nongkang 12...
How to prevent and control powdery mildew in winter melon? Please explain effective prevention and control methodsFor powdery mildew in winter melon, you can refer to the following methods for prevention and control:
1. Choose disease-resistant varieties. Choose early-to-mid maturing winter melon varieties such as Guangyou No. 1 and Huidou, or mid-to-early maturing varieties such as Guangyou No. 2, Guanxing No. 2, and Qixingzai.
2. At the early stage of the disease, spray Nongkang 120 or Wuyi Mycin aqueous solution at 100-150 times dilution, once every 7-10 days, for 2-3 consecutive treatments. In addition to controlling powdery mildew, it can also simultaneously control anthracnose, gray mold, black spot, and other diseases.
You can also begin spraying at the early stage of the disease with 20% triadimefon (Fenxiuning) emulsifiable concentrate at 2000 times dilution, or 60% Fangmeibao No. 2 at 1000 times dilution, 15% Zhuangyuanle aqueous solution at 200 times dilution, 6% Lebigeng wettable powder at 1000-1500 times dilution, 12.5% Subaoli wettable powder at 2500 times dilution, 5% Santailong wettable powder at 2000 times dilution, 30% Baifensong emulsifiable concentrate at 2000 times dilution.
In areas where resistance to the above fungicides has developed, you can use 40% Fuxing emulsifiable concentrate at 8000-10000 times dilution, once every about 20 days. After one treatment, switch back to commonly used fungicides.
3. For winter melon and wax gourd grown in greenhouse protected cultivation, you can also use 5% Baijunxiao dust formulation, 1 kg per 667 sq m. Stop applying the product 7 days before harvesting the fruit. The key technical points are early prevention, prevention before noon, thorough spraying, and using a large amount of water.
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