Chinese cabbage is sick and rotten leaves die, what medicine to use

Updated on Three rural 2024-07-28
12 answers
  1. Anonymous users2024-02-13

    There are three common symptoms of Chinese cabbage leaf rot: stem base rot, gourd rot and leaf rot.

    The following medicines can be used**Chinese cabbage leaf rot disease.

    1.You can choose 2000 times of 72% agricultural streptomycin sulfate soluble powder or 2000 times of new phytomycin, spray 1 time every 7 days, spray 2 3 times.

    2.Soft rot bacteria like alkaline environment, vinegar can be added during control.

    500 800 ml per mu is conducive to improving the disease resistance of plants.

    3.Add 50 kg of water with 100 150 grams per mu of vegetable Fengling, spray 1 2 times or use agricultural resistance 751 liters per mu to drip into the vegetable field with water.

    4.Cabbage preservative can be used per 15 grams of water 15 20 kg, sprayed once in the cabbage growth period and the core stage, can enhance its cold, drought resistance, disease resistance, and at the same time on the soft rot, black rot, downy mildew of cabbage.

    Diseases such as viral diseases have a significant preventive effect.

    5.Foliar spraying with 1500 times of bacterial poisoning, spraying 1 time at an interval of 8 to 10 days, and spraying 2 times in a row.

  2. Anonymous users2024-02-12

    Starting from the base of the cabbage stem, it begins to rot at the junction with the cabbage outlet, and then gradually spreads to the heart leaf, which is a condition of cabbage soft rot, a bacterial disease that is prone to occur during the balling stage. In the prevention and control, copper preparations can be used, such as copper hydroxide or royal copper, with an interval of 7 to 10 days, and the second time is alternated. For the second use, iprodione and neophytomycin can be used.

    Cabbage soft rot will also cause huge losses during storage, so choose varieties with strong disease resistance, strengthen field management, and spray pesticides in advance to prevent soft rot.

  3. Anonymous users2024-02-11

    Fungal diseases, mix fungicides by yourself, there are too many drugs, there are many bragging, you can consider it if you can last more than five years, and you can try new drugs.

  4. Anonymous users2024-02-10

    Chinese cabbage leaf rot is generally caused by calcium deficiency and soft rot.

    Therefore, those who have planted cabbage do not have to worry, understand the prevention and control methods in advance, do a good job in field management, and prevent in advance, or can ensure the yield of cabbage.

  5. Anonymous users2024-02-09

    There are many reasons for Chinese cabbage leaf rot, generally common, there are pathogens in the soil, pests and diseases on the foliage, excessive boiling water, inadequate management, etc., many reasons lead to this phenomenon.

  6. Anonymous users2024-02-08

    There are two possibilities for Chinese cabbage leaf rot, one is that it has suffered from pests and diseases, and the other is that it may be caused by cloudy weather, too long time, and too much moisture.

  7. Anonymous users2024-02-07

    Calcium deficiency There is no problem outside, but after cutting, the heart leaves will dry up and rot the leaves, which is due to cabbage heart rot caused by calcium deficiency. The onset site of this disease is mainly in the center of the leaf bulb, and the main characteristics are the yellowing of the old leaves and the rot of the heart leaves. Prevention and control methods:

    When fertilizing the land, calcium should be supplemented, and quicklime or lime can be sprinkled.

    2.In addition to this condition, there is also a type of soft rot that starts at the base of the cabbage stem, begins to rot at the junction with the cabbage outlet, and then gradually spreads to the heart leaf, which is a bacterial disease that is prone to occur during the balling stage.

  8. Anonymous users2024-02-06

    Chinese cabbage rotten leaves are commonly bitten by pests and then pull excrement on it, pollute the leaves, usually watered or rainy, wet, the leaves are easy to rot, so it is found that Chinese cabbage is pested to a variety of ways to control pests.

  9. Anonymous users2024-02-05

    Soft rot: Spread mainly by insects, rainwater, irrigation water and infected manure. Calcium deficiency:

    Cabbage heart rot caused by calcium deficiency. Virus disease: In severe cases, it will lead to dwarfing and even death of seedlings, and it should be treated with plant disease emulsion.

    Downy mildew: Prevent with 58% methalene, manganese-zinc or 64% alum 400 times.

    1. Soft rot

    After Chinese cabbage is infected with soft rot and sclerotinia sclerotinia two diseases, there will be leaf rot, soft rot is mainly transmitted by insects, rainwater, irrigation water and infected manure, and the bacteria can also invade from wounds and cracks, and sclerotinia sclerotinia mostly occurs from the base of the ground petiole.

    2. Calcium deficiency

    The outer layer of Chinese cabbage does not rot, but the heart leaves dry up and erosive after cutting, which may be due to the cabbage heart rot caused by calcium deficiency, which mainly occurs in the center of the leaf ball, and the symptoms are turned into old leaves withered and yellow, and heart leaves are ulcerated.

    3. Viral diseases

    After the Chinese cabbage is invaded by the virus disease, the heart leaves are transparent at first, and gradually fade green along the leaf veins, resulting in light green and dark green conditions, the leaves become wrinkled, and in severe cases, the seedlings are dwarfed and even die, which should be treated with plant disease emulsion.

    4. Downy mildew

    Chinese cabbage may be infected with downy mildew from seedling stage to flowering stage, and the leaves of adult plants are most seriously damaged, which can be prevented with 58% methalene-manganese-zinc wettable powder 500 times or 64% alum wettable powder 400 times, sprayed once every 7 days, sprayed 3 times in a row.

  10. Anonymous users2024-02-04

    The rotten leaves of Chinese cabbage can be controlled by alternating bacterial drugs such as thiasen copper, or thioxene copper, or agricultural streptomycin, or mesomycin, or thiamethone, or quinoline copper, or choosing two components with the same mechanism of non-nuclear volcanic volcanic and potassium dihydrogen phosphate. 5 days to change the brigade to carry the times, continuous spraying of more than 2-3 times. The vegetables that are sick here should be removed from the ground and destroyed in time.

    Recommended medications, e.g., copper thioxamethoxene + thiamethone + potassium dihydrogen phosphate.

  11. Anonymous users2024-02-03

    Xiaobaizhou Yuyu vegetable rotten roots and dead seedlings can be used chlorothalonil wettable powder, alum wettable powder, agricultural streptomycin, etc. Root rot of cabbage may be soil compaction, poor air permeability, resulting in poor root rooting, and the soil can be loosened by cultivating to improve the air permeability of the soil. Root rot of cabbage can also be caused by the accumulation of loose water, which can be dug up to reduce the moisture of the soil.

    Introduction of bok choy

    Chinese cabbage is a kind of vegetable native to East Asia, commonly known as green cabbage, also known as gum cabbage, scoop cabbage, scoop white, rape, oil cabbage, etc., and Chinese cabbage is a close relative, the same belongs to a kind of ruebi, native to China.

    Chinese cabbage is a cultivated plant of the genus Brassica, the stems and leaves are edible, one or two annual herbaceous plants, 25 70 cm high, often cultivated annually, is the vegetable with the richest minerals and vitamins.

    Cabbage likes cold and cool, and is more resistant to low temperature and high temperature, and can be planted and marketed almost all year round, but if you look at palatability, safety and nutrition, January, February and March are the best seasons for cabbage consumption.

  12. Anonymous users2024-02-02

    Chinese cabbage rot disease can be sprayed once every 7 10 10 days, 2 3 times in a row, 700 750 times in 47% Garinon wettable powder or 350 times in 14% copper ammonia aqueous solution, every 7 10 days, and 2 3 times in a row. Chinese cabbage rot disease is a common disease of Chinese cabbage, and the causes of Chinese cabbage infection include excessive rain and uncomfortable temperature.

    Prevention and control of Chinese cabbage rot disease

    After the Chinese cabbage produces rot disease, the infected plants need to be cleaned up first, and then the corresponding drugs are sprayed, and the soil around the infected plants needs to be disinfected with quicklime.

    When planting Chinese cabbage, you need to choose good disease resistance and withered seeds, during the growth of Chinese cabbage, you need to properly replenish water, but the amount of watering should not be too much, keep the soil slightly moist, the amount of watering needs to be controlled in the rainy season, and you also need to discharge the water in the soil in time.

    Chinese cabbage likes a cold growth environment, the suitable growth temperature is 10 22, when the outside temperature reaches 32, the growth of the plant will be affected, need to do a good job of cooling measures, and increase ventilation.

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