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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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Control Methods and Technical Key Points for the Cabbage Moth
The cabbage moth, also known as the cabbage cutworm and vegetable armyworm, has the Latin scientific name Mamestra brassicae Linnaeus and belongs to the order Lepidoptera, family Noctuidae. The cabbage moth has an extremely diverse diet, with known hosts reaching over 100 species across 45 families. Among vegetables, its main hosts include cabbage, cauliflower, Chinese cabbage, radish, rapeseed, solanaceous and fruiting vegetables, legumes,...
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Spring Cultivation Techniques and Management Key Points for Purple Cabbage
Purple cabbage has good cold tolerance, firm heads, brilliant color, strong adaptability, high yield, and good quality. It is suitable for open-field and protected cultivation, with a yield of 2500-3000 kg per mu. 1. Variety selection: Choose varieties with strong winter hardiness and early maturity for spring sowing, such as Purple Cabbage No. 1, Zaohong, and Hongmu. 2. Sowing and seedling raising: Nanjing...
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How to efficiently grow multiple crops of cabbage, sweet potato slips, eggplant and cauliflower in succession?
Lettuce prefers a cool environment and tolerates neither cold nor heat well. Therefore, to grow lettuce successfully, the following technical steps should be mastered. 1. Variety selection. For planting lettuce, choose varieties with good cold and heat tolerance and strong stress resistance, such as head lettuce, glass lettuce, curly-leaf lettuce and Caesar, which are better choices. 2. Soil...
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How to apply topdressing to napa cabbage? Fertilizing according to the growth stage works well
Napa cabbage has high yield and a large fertilizer demand. On the basis of applying sufficient base fertilizer, do not rush to apply topdressing. Topdressing should be determined according to different growth stages and seedling conditions. Generally, no topdressing is applied at the seedling stage. If the base fertilizer is insufficient, the first application can be made at the 3-4 true leaf stage, applying 10 kg of ammonium sulfate per mu, broadcast on both sides of the seedlings, and watered immediately, which is called...
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Detailed Explanation of Technical Measures for Chinese Cabbage Disease Control
Downy mildew, viral disease, soft rot, and tipburn are the main diseases of Chinese cabbage. 1. Downy mildew can occur from the seedling stage to the heading stage, mainly affecting the leaves of Chinese cabbage. It first appears on the lower leaves, producing water-soaked, pale yellow, angular lesions on the leaves, which gradually expand and turn yellowish-brown...
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