The rainy season in Hebei Province has been unusually prolonged since May, with June experiencing frequent and consecutive rainfall. This persistent wet weather has led to lower field temperatures and increased soil moisture, creating favorable conditions for the development of vegetable diseases. As we move into a more volatile weather period, hot and humid conditions are expected to become more common. Vegetable growers should remain vigilant and enhance their disease prevention and management strategies.
First, analyzing the disease trends: Given the current weather conditions, the incidence of diseases is likely to rise. The damping-off disease in eggplant seedlings may be more severe due to high humidity. Tea damage could lead to cracking and an increase in occurrences. Rainfall promotes bacterial spread, which creates ideal conditions for the development of hot pepper rot and soft rot. Special attention should be given to chili diseases. Due to heavy tomato rainfall, farmers often apply excessive topdressing, leading to poor soil permeability and an increased risk of physiological umbilical rot. Cucumber diseases, such as those caused by water droplets, are also expected to increase with higher rainfall. Insufficient light during cloudy and rainy days can cause issues like large-bodied melons, sharp-edged melons, and curved melons. Cruciferous vegetables should watch out for soft rot and black rot. Onions need protection against purple spot, black spot, gray mold, and downy mildew.
Second, control recommendations:
1. After rain, it's crucial to drain fields promptly to avoid waterlogging. For protected nursery beds, watering should be controlled, and dry soil or ash should be sprinkled when the bed becomes too moist.
2. Accurate diagnosis is essential, especially under high temperature and low humidity conditions, where symptoms of similar diseases can overlap. For example, early signs of downy mildew and powdery mildew on cucumbers may appear similar, and tomatoes may suffer from complex infections after gray mold.
3. Strengthening agronomic practices is key. On cloudy days, spraying 2% brown sugar solution mixed with micro-fertilizers every seven days for 2–3 times can help prevent deformed fruits in tomatoes and cucumbers.
4. Preventive measures using chemical agents are important. For Solanaceae and melons, applying 10% Kexia suspension at 1500–2000 times, 2–3 times, helps control downy mildew. For onions, 50% acetamiprid WP diluted 1500 times, once every 7 days, can prevent purple and black spots. For cruciferous vegetables, 80% trichloroisocyanuric acid soluble powder at 3000 times, sprayed once every 7 days, 2–3 times, is effective against soft and black rot.
Early treatment for downy mildew and blight can use 10% Kexia suspension at 1000–1500 times, applied every two days, 2–3 times. Alternatively, 66.8% Mildew WP at 500 times, 52.5% Fast Water Purification Dispersible Granules at 2000 times, or 69% Ankegan Zinc Wettable Powder at 700 times, applied every 5–6 days, 2–3 times, is also effective. For cruciferous soft and black rot, 85% trichloroisocyanuric acid at 1500 times, once every 7 days, 2–3 times, is recommended.
Other bacterial diseases can be managed with 20% Dragon’s Bacteria (TB copper) at 600 times, 77% Copper Hydroxide Wettable Powder at 500 times, 12% Green Butter Emulsion at 500 times, or 47% Garrett Agricultural WP at 500 times.
For powdery mildew on Solanaceae, 30% Fluconazole at 1500–2000 times, 12.5% Betalizole at 500 times, or 10% Georgine (Oxiconazole) at 2000 times is effective. Melon powdery mildew can be treated with triadimefon at 1500 times. Anthracnose can be controlled with 0.5% amino oligosaccharides at 600–800 times, 10% Shigao (Dioxiconazole) at 2000 times, 40% Baidu Available Wettable Powder at 700 times, 25% Olfactory Bacteria Sunny at 500 times, 80% Bordeaux Wettable Powder at 400 times, or 70% Profen Zinc Wettable Powder at 600 times.
For Verticillium wilt and root rot, 50% Bromobromide Isocyanuric Acid + Nutrient (total quality) at 1500–2000 times in the early stage, and 750 times in severe cases, applied at 100–500 ml per plant, once every 7 days, 2–3 times, is recommended.
Alcohol Corn Gluten Meal
Yellow Cornmeal Gluten Free,Alcohol Corn Gluten Meal,Dogs Corn Gluten Meal,Cats Corn Gluten Meal
JILIN COFCO BIO-CHEM AND BIO-ENERGY MARKETING CO., LTD , https://www.cofco-biotech.com