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Detailed Explanation of Key Techniques for Spring Cabbage Cultivation
1. Timely sowing. Timely sowing is one of the important technical measures in spring cabbage cultivation. If sowing is too early, the seedlings grow larger, and continuous low temperatures in early spring cause the seedlings to pass through the vernalization stage too early, making premature bolting likely. Conversely, if sowing is too late, the maturity period is delayed, affecting economic returns. In the Hangzhou area, sowing is generally carried out in February...
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How should sclerotinia rot in cabbage be prevented and controlled?
Answer: Low temperatures in early spring and many days with little sunlight favor the occurrence of sclerotinia rot in cabbage. After the plant becomes infected, water-soaked lesions appear first, then turn into white lesions, and in severe cases cause the plant to rot. Prevention and control methods: 1. Agricultural control. Before sowing, rinse the seeds with 10% salt water or 10%-20% ammonium sulfate solution, then dry them and sow. ...
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How to prevent and control pests, diseases and weeds during the seedling stage of cabbage-family vegetables
Cabbage clubroot mainly harms cruciferous vegetables. After the disease occurs, the roots swell and become tumor-like, hence the name clubroot disease. Generally, after the main root is infected, it becomes lump-shaped, and after the fine roots, branch roots, lateral roots and fibrous roots are infected, they are mostly locally swollen and deformed. Simple diagnosis: clubroot disease and root-knot nematode disease have similar field symptoms. When distinguishing them, you can dissect...
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What causes premature bolting in spring cabbage
Cabbage is a vegetable that loves fertilizer and tolerates it well. Generally, about 35 days after transplanting, the plant's uptake of nitrogen, phosphorus, calcium and other elements reaches its peak, while potassium uptake peaks at 50 days. Before reaching the peak values, the plant's fertilizer uptake basically shows a straight upward trend as the growth period progresses. Cabbage at different growth stages has different...
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Detailed Explanation of Cabbage Seedling-Raising Techniques for Summer-Autumn and Overwintering
Late-sown overwintering cabbage cultivation is generally raised as seedlings in September and planted in November on late-crop plots such as cotton, rice, orchards or sweet potato land. It is harvested in mid-April. The income is generally 3000 yuan per mu. The returns are relatively good, and it is welcomed by many growers. From sowing to harvest, it passes through a long period of low temperature, and premature bolting is likely to occur...
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What are the control methods for black rot of cabbage?
Main symptoms: When the disease occurs at the mature plant stage, most lesions spread inward from the leaf margin, forming a "v" shape, and are yellowish-brown dead spots. The leaf tissue around the lesions is pale yellow, with no obvious boundary from the healthy part; sometimes the pathogen can spread inward along the leaf veins, forming a network of yellow veins. Causes of the disease: The primary infection source of this disease is seeds or in the soil...
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Main Pests of Overwintering Cabbage and Their Control Methods
1. Nutrient Solution Formula The nutrient solution formula for kale in the Beijing area is the same as that for hydroponic lettuce, so it will not be repeated here. 2. Nutrient Solution Concentration Management Kale has a strong ability to absorb nutrients and requires sufficient fertilizer. The nutrient solution concentration management index is 2.5-3.0 ms/cm, and this concentration can be used consistently from planting to harvest. 3...
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How to prevent and control downy mildew in cabbage? Detailed explanation of control methods
In the early stage of the disease, pesticides such as 75% chlorothalonil wettable powder 600-800 times dilution and 70% mancozeb wettable powder 800 times dilution can be used for preventive protection. In mid-September, the early stage of the disease is the key period for control. You can use 58% metalaxyl·mancozeb wettable powder N700 times dilution, 20% flumorph wettable powder l000 times dilution, 60% flumorph...
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Harmless production technology for early spring potato-stevia-autumn cabbage
This spring has seen more low-temperature and low-light days, which favors the occurrence of cabbage sclerotinia rot. Vegetable growers are urged to take control measures early to reduce the damage. 1. Symptoms and characteristics: After seedlings are infected, water-soaked light brown lesions appear on the leaves, with indistinct edges, and the diseased tissue soft-rots, causing damping-off. When plants are infected during the head-forming stage, on the stem bases near the ground...
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Prevent cabbage head splitting in early spring by taking precautions in advance
In early spring, cabbage grown under protective cultivation is prone to head splitting, which not only affects the appearance quality and marketability of the cabbage, but also makes it more susceptible to disease, affecting storage and transportation. According to experiments, cabbage head splitting is not only related to variety, but also to excessive moisture, while it is basically unrelated to fertilizer. If moisture is insufficient, the cabbage heads are small; if moisture...
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