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How to manage Chinese cabbage during the rosette stage? These measures need to be mastered
Symptoms: It occurs in all regions and can cause damage both in the field and during storage. The disease usually starts at the base of the leaf stalk and spreads to the entire leaf and then the whole cabbage plant. The diseased part rots, and white cottony mycelium and black sclerotia grow on the surface. On seed-producing plants, the stems are mostly affected; the stalk area is initially light brown and sunken, then turns white, and the cortex decays...
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How to Scientifically Fertilize and Apply Pesticides to Chinese Cabbage
Chinese cabbage can be direct-seeded or raised as seedlings and transplanted, but direct seeding is generally practiced. If seedling raising and transplanting are used, fertilizing the seedbed is very important for cultivating strong seedlings. The standard for seedbed fertilization is generally that the seedbed needed to plant one mu of field (about 35 sq m) is given 200-250 kg of fully decomposed barnyard manure or 1-1.5...
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How to grow off-season cabbage? Detailed planting techniques
1. Spray rice vinegar: From the rosette stage to the heading stage of Chinese cabbage, spray a 300-500 times diluted rice vinegar solution, once every 7-10 days, for 2-3 consecutive sprays, which can increase yield by 15%-30%. 2. Spray rare earth: At the rosette stage, heading stage, and hearting stage, spray 0.03%, 0.05%, and 0.08% rare earth nitrate solutions respectively, for a total of 3 sprays,...
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How to prevent and control Chinese cabbage virus disease? These medication guidelines must be remembered
Agricultural control 1. Choose disease-resistant varieties and avoid continuous cropping. Planting experience has proven that varieties with green stems and green leaves are generally relatively resistant to disease. Do not plant near other cruciferous crops and do not practice continuous cropping with cruciferous crops, which can effectively avoid the occurrence and spread of the disease; 2. Sow at the appropriate time but later, and cover to lower the temperature. According to planting experience, appropriately...
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What medication works well to prevent and control clubroot in napa cabbage
Clubroot in napa cabbage refers to the formation of tumors of varying sizes and shapes on the roots of the cabbage; the tumors are smooth in the early stage and become cracked and rough later, and after cracking they are prone to infection by pathogens. Clubroot not only harms cabbage but also harms many crops in the cruciferous family. Clubroot can affect napa cabbage at the seedling stage, and in severe cases the plants die. This disease...
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What Fungicide Works Best for Controlling Chinese Cabbage Root Rot
Causes of the Disease: Chinese cabbage downy mildew is a fungal disease that mainly affects the leaves, though the stems and flowers can also be affected. After infection, water-soaked chlorotic spots appear on the upper surface of the leaves, later turning yellowish-brown. As the lesions expand, they are often restricted by the leaf veins and become angular in shape. When the weather is humid, a sparse white mold layer forms on the underside of the leaves, and the disease...
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How to fertilize autumn-sown Chinese cabbage? Detailed technical points
Chinese cabbage, also called heading cabbage or yellow-bud white, originated in China. China is also rich in variety resources. Its yield per unit area is high, generally 3500-4000 kg per mu, with high yields above 5000 kg. I. Botanical characteristics. Chinese cabbage has a well-developed root system, and the radicle can form a thickened fleshy taproot. The main root is slender...
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How to prevent diseases in autumn-planted Chinese cabbage? Early preparation is key
As the saying goes: turnips in the first fu, mustard in the second fu, and Chinese cabbage sown at the start of autumn. The season for planting autumn Chinese cabbage has arrived again, and it should be planted at the right time to ensure good quality and high yield. The key points of autumn Chinese cabbage cultivation techniques are introduced as follows: For variety selection, generally choose tall, late and mid-maturing varieties for plots with good fertilizer and water conditions; for fertile...
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How to control root maggots in autumn cabbage? These methods you need to master
During the growth of autumn cabbage, the most dreaded pest is the root maggot (also called cabbage root maggot). It gnaws at the epidermis of the Chinese cabbage roots, allowing soil-borne pathogens to invade through the wounds, causing the cabbage to drop its outer leaves and rot. This not only reduces cabbage yield but also affects its edible value. If not controlled in time, it can damage the entire field, causing serious losses to vegetable growers...
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How to prevent early-crop Chinese cabbage from failing to form heads?
1. Biological control (1) Take care to protect natural enemies such as parasitic wasps, and apply Bacillus thuringiensis var. aizawai (each gram of powder contains 10 billion spores) at 500-700 times dilution, or Qingchongjun No. 6, B.t. emulsion, etc. Apply granulosis virus preparations or collect from the cabbage field late-instar larvae that died from viral infection (infected larvae have reduced appetite and turn black in body color...
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