What causes soft rot in celery cultivation? How to identify and control celery soft rot?

It may be a problem of disease, or the temperature and humidity conditions are not suitable, and there is a problem of bacterial disease in planting, which will cause soft rot. According to the color, there are also changes in this area to identify, understand the disease situation in this area, and summarize the experience in this area.

Soft rot is usually caused by fungal infection, and the early symptom of this disease is the yellowing of celery stalks, which then begin to rot.

According to the Department of Agricultural Technology, the disease is caused by the bacterium Euclidean carrot on carrots. It belongs to the bacterial class, the pathogen is saproprial in the diseased residue and soil, and the main cause of soft rot of green onion is spread from the wound or skin hole of the green onion to the inside of the green onion. In addition, the climate, the damage of the green onion and the root rot are serious, and the soft rot and root rot generally occur at the same time, and the symptoms of soft rot of green onions:

At the beginning of the disease, it expands from the stem base from the bottom to the top, with water-stained elongated spots, and then gradually produces translucent gray-white lesions, and with the development to the base of the leaf sheath, the soft rot pathogen will remain in the soil with the onset of crops and the disease, and the rain and irrigation in the field will accelerate the spread of this pathogen. Among them, the lack of water and fertilizer in the early field, the continuous high temperature and drought weather or the excessive application of water and fertilizer in the later stage will cause the aggravation of crop diseases.

<> Generally speaking, the soil is heavy clay, serious compaction, low-lying waterlogging, more precipitation, high humidity in the field, the use of unrotted organic fertilizer, excessive use of nitrogen fertilizer, flat furrow planting, and heavy underground insect pests, the incidence of soft green onion rot is relatively high, the disease is more serious, and the disease spots continue to develop downward, the leaves will be yellow, thin, the tips of the leaves will dry up, and the whole green onion will not grow. When you pull out a diseased shallot, you will find that its root hairs have turned yellow, the root system has turned brown and necrotic, and the bulb has a dark brown mold layer on the epidermis. The onset of the disease affects the next year's crops.

Once found green onion rot soft disease, it should be dealt with in time to reduce damage, and at the same time, after harvesting, it is necessary to burn the dead branches and leaves in the ground, otherwise the fungus will parasitize in the residue for overwintering, and the second year with the spread of rain or watering maceration soft rot should first pay attention to the prevention and control of those pests and diseases that cause wounds is also a better method; Then in the green onion storage period to prevent and control rot disease, it is necessary to stop watering a week before harvesting green onions, and choose to harvest green onions in the bright weather, so that you can dry the onset period, you can choose to spray with streptomycin, new phytomycin, when serious, you can use it continuously for one or two days until the disease disappears.

Symptoms:1First of all, the surface of the base of the petiole will produce a light brown water-soaked lesion.

2.The lesions will expand rapidly, and the diseased parts will show wet rot, and the celery will also turn black in the maintenance tube, and even rot and stink, and some rot will produce yellow-white sticky, and soft rot can lead to the death of the whole celery plant when it is serious. 3.

When celery plants are infected with soft rot, celery leaves will gradually turn yellow, wilt and collapse from the outside to the inside. How to prevent:1

After the occurrence of soft rot in celery, the affected plants are uprooted in time and the surrounding soil is disinfected with lime. 2.It can also be sprayed with bacterium for control, focusing on the base of the wine plant and the surface.

3.In the early stage of the disease, spray with 800-1000 times of liquid, and when the disease is severe, the dosage and frequency of use can be appropriately increased, and it can be sprayed once every 7-10 days.

Generally, the disease begins at the base of the tender and juicy petiole, and at the beginning of the disease, it is water-soaked and forms light brown spindle-shaped or irregular sunken spots, and then it is wet rot, black and smelly, and only the epidermis remains. 1.Crop rotation.

Celery soft rot is mainly transmitted through soil, etc., and a large number of pathogens are easy to accumulate in the soil of heavy crops, and continuous stubble is bound to be prone to disease and aggravate the disease. Therefore, crop rotation of more than two years should be implemented. 2.

Cultivation management. Since the soft rot fungus first invades from the wound of the plant, the plant wound is one of the important factors of the disease. For this reason, in the process of planting, cultivating, weeding and other operations, it is necessary to avoid injuring the roots or causing wounds to the plants.

The planting should not be too deep, and the soil should not be too high, so as not to bury the petiole in the soil; Timely drainage after rain; If the diseased plants are found, they should be removed in time and sprinkled with lime and other disinfections; Reduce or stop watering during the onset period to prevent flooding. The crop rotation effect is good.

It occurs mainly at the base of the petiole but can also occur on the stem. After celery is killed, light brown, watery, spindle-shaped, or irregularly sunken lesions begin to appear. Later, it turns black, rots and smells, leaving only the epidermis.

1.Crop rotation is implemented, and the rotation of leguminous and lily vegetables is more than 2 years.

2.Disease-free soil seedlings are selected from disease-free soil (such as field soil) for seedlings.

Celery is a very important side dish in our daily diet and has a high market demand all over the country. Celery is also cultivated on a large scale. Celery soft rot, also known as rot, occurs all over the country and is the most troublesome problem for celery growers.

In the later stage of celery growth, if the ridges are sealed for shade and the humidity is high, the occurrence of soft rot will be more serious. The spores of the soft rot pathogen hibernate in the soil and, after the temperature rises the following spring, infect celery wounds through soil, insects, and running water.

When the disease is spread by the same means. The main damage objects are petioles and necks. In the early stages of the disease, watery dark spots appear at the lesion site, and the spots are concave.

Later stages gradually expand to form plaques, which then decay, accompanied by foul odors and perforations, resulting in a severe decline in celery yields. Celery is a common vegetable in daily life. Celery contains a variety of pharmacologically active ingredients.

The main active ingredients include flavonoids, volatile oil compounds, unsaturated fatty acids, chlorophyll, shiitake mushrooms, coumarin derivatives and others.

Celery is cool, sweet and spicy, non-toxic, rich in a variety of nutrients, with spleen and stomach, laxative, blood pressure, diuretic, iron supplementation, anti-cancer and other functions, hypertension, anemia, edema and other diseases of the prevention and health care also has a certain effect. Celery is rich in apigenin, which has antitumor, anti-inflammatory, antioxidant, antihypertensive and vasodilator effects. Taking fresh celery juice or honey with tender celery juice directly can prevent and treat high blood pressure.

Celery is high in calcium and phosphorus, which can enhance bone health. Celery is high in fiber. When digested, it produces an antioxidant that inhibits gut bacteria.

It can also accelerate intestinal peristalsis, promote excretion, reduce the contact time between carcinogens and the colonic mucosa, and prevent colon cancer.

Celery is an edible vegetable. There is iron deficiency anemia in the body, and regular consumption of celery can promote iron replenishment in the body. If the body has symptoms of upset and dry mouth, a proper diet of celery can clear away heat and detoxify, strengthen the body and reduce fire.

It has diuretic, swelling and anti-cancer effects. It is rich in alkaline ingredients and also has a calming and soothing effect.

The bacteria will carry the remaining plants through the winter and then spread through water and insects, and when celery grows, it is more susceptible to disease, and the higher the temperature, the more rain it will have, and the more severe the disease. The low terrain is not well drained, which will lead to serious morbidity. At the same time, too much nitrogen fertilizer is used in fertilization, and crop rotation is not adopted, which can also lead to the onset of soft rot.

The pathogenic bacteria invade from the wound and then spread through rainwater irrigation after onset, eventually leading to soft root rot in celery.

It is the weather temperature is hot and cold, and then suddenly it rains heavily or it snows, and the leaves of celery are a little yellow, and the appearance is not very good, which means that there is a disease.

Celery soft rot, also known as "rotten pimple", is a bacterial disease, which is generally prone to disease in the middle and late stages of growth, when the ridge is sealed and shaded, and the ground is moist. The pathogen mainly overwinters in the soil, invades the wound through insects, rainwater or irrigation water, etc., and can spread through rainwater or irrigation water after the onset of the disease. It occurs mainly at the base of the petiole or on the stem.

The disease usually begins at the base of the tender and juicy petioles, and at the beginning of the disease, it appears water-soaked and forms light brown spindle-shaped or irregular sunken spots.

It is likely to be caused by lack of ventilation, or it may be caused by too many germs in the soil, or it may be caused by the temperature not being suitable.

This is due to the lack of nutrients in the soil where celery is grown, and the lack of water and organic fertilizer in celery.

It is caused by carrot soft rot Eucloniella, carrot soft pathogenic type infection, mainly harming the base of the petiole.

This is mainly due to the lack of management, and the fact that the soil is not loose and breathable, and there is too much water in the field.

Soft rot often causes the heart leaves and the surface to rot, and when it is serious, the outer leaves rot and fall off, and the diseased part is brown and rotten, with small black spots, which mostly appear after celery transplanting, which is easy to cause a large number of celery seedlings to die; How to prevent and control: First of all, in the early stage of celery, it should be prevented as soon as possible to prevent the spread and minimize the loss. Specifically, pesticides such as quinoline copper, chlorazole, killable, streptomycin and other pesticides can be sprayed alternately, sprayed once every 4 5 days, and the main method for the prevention and control of celery wilt is three times in a row; Select varieties resistant to wilt, adopt the method of high furrow and ridge cultivation, and then apply well-rotted organic fertilizer, after the rain or when there is stagnant water, timely drainage, it is strictly forbidden to irrigate with large water, if it is a serious fungus with the disease residue in the soil winter, with the rain, irrigation water in the field spread.

Do a good job of cleaning up the last crop when pulling seedlings. In the early stage of the disease, it can be killed with agricultural streptomycin in biomycin, thiazole copper, quinoline copper, and leaf azole. Alternate medication at intervals of 4 to 5 days.

It mainly occurs at the base of the petiole or on the stem, generally starting from the tender and juicy petiole tissue, the initial stage of the petiole base appears water-stained spindle-shaped or irregularly shaped sunken lesions, and then the lesions are yellow-brown or black-brown rot and smelly, and the black-brown pathogen is very saprophytic after drying, and can survive in the soil for 10 years or more. Spread with the help of farm implements, rainwater and irrigation water. The germ invades from the wound at the base of the root or stem, and the high temperature and humidity are conducive to the onset of the disease, and the optimal temperature for the onset of the disease is about 24.

The relative humidity is required to be more than 80%, and after the celery seedlings are planted for about a week or two and the growth is stable, spray some carbon calcium solution on the seedlings, which is the best way to prevent celery, which is much better than spraying. Check and scrape off the lesions in a timely manner. This disease generally only harms the epidermis, should be scraped in time to avoid its extension to the mild disease of the garden, scraping off the lesions can be used 430 grams of tebuzole on the stubble crop to do a good job of cleaning.

In the early stage of the disease, it can be killed with agricultural streptomycin in biomycin, thiazole copper, quinoline copper, leaf dry azole, chlorobromide isocyanuric acid. Wait for alternate medication for 4-5 days and hit 3 times in a row.

Soft rot is a bacterial disease in which celery causes wounds during rainy weather or during weeding and crop rotation. It can be solved by pharmaceutical treatment.

Celery soft rot is caused by excessive soil moisture or continuous cropping bacterial infection. 1. Pathogen. Celery soft rot is caused by the Eurendella carrot of the genus Eurendri.

2. Infection cycle. The pathogenic bacteria overwinter in the soil with the diseased residues, and the temperature and humidity are suitable in the second year, and they invade from the celery wound and spread through rainwater and irrigation water. 3. Onset conditions.

The ground is low-lying and damp, heavy stubble, the shed is ventilated, and the drainage is poor.

Prevention and control methods: 1. Advocate crop rotation. Avoid continuous cropping of crops prone to soft rot such as celery and cruciferous vegetables as much as possible, and promote rotation with other vegetables for 2-3 years in re-diseased plots.

The stubble arrangement should make the land have a certain fallow period to improve the physical and chemical properties of the soil, and promote the decomposition of disease residues and the death of pathogens. 2. Strengthen cultivation management. Adopt deep furrow and high furrow cultivation, drain water in time after rain, reduce the groundwater level, water fertilizer and water to reduce the chance of germs spreading with water, apply foot fertilizer, and increase the application of fully decomposed organic fertilizer.

3. Clean up the countryside. After the diseased plant appears in the field, it should be pulled out immediately, and treated with medicinal solution in time, and the diseased plant and its surrounding healthy plants should be watered to reduce the disease. After harvesting, the diseased plant residue should be taken out of the field to be buried or burned, and the soil should be turned deep to accelerate the decay and decomposition of the diseased residue.

Celery soft rot mainly occurs at the base of the petiole or on the stem, wet rot, black and smelly, should be reasonably densely planted, planted with wide ridges, in order to facilitate watering and drainage. Watering should be reduced or suspended during the onset period. Dig up the diseased plants in time, plant loose soil or hoe to avoid root injury, and prevent germs from invading from the wound.

It can be caused by soil pollution, soil diseases, soil infection, wrong fertilization during the planting process, or too much watering. It is necessary to reduce the amount of watering, and to pay attention to soil protection, but also to pay attention to disinfection and sterilization of the soil.

It may be caused by too much watering, too much chemical fertilizer will also occur in this situation, we must pay attention to water and fertilizer management, you need to fertilize and water reasonably according to the growth of plants.

Summary. Celery root rot is generally caused by the following diseases, and the following is a description of the prevention and control methods of these diseases:

1. Celery wilt disease Symptoms: After the seedlings are susceptible, the growth is slow, and they wilt or wither when it is severe. The adult plant is susceptible, the leaves are dull, and in severe cases, the leaves lose their green color or the interveined mesophyll appears yellow-green alternating muffles, and the vascular bundles turn brown when the diseased stems are planed, and the roots and rhizomes turn red, the roots rot, and finally the whole plant withers.

Control methods: choose varieties resistant to blight. It is cultivated with high furrows or ridges.

Apply well-rotted organic fertilizer and drain it in time after rain, and flood irrigation is strictly prohibited. Crop rotation for more than 3 years in seriously ill areas should be implemented.

2. Celery root rot Symptoms: It is mainly harmful to the root and stem base, and the damaged place begins to grow reddish-brown lesions with water invasion.

What is the best way to control the root rot of celery?

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Celery root rot is generally caused by the following diseases, the following is the prevention and control methods of these diseases: 1. Celery wilt disease Symptoms: After the seedlings are susceptible to the disease, the growth is slow, and the wilting or withering is severe when it is serious.

The adult plant is susceptible, the leaves are dull, and in severe cases, the leaves lose their green color or the interveined mesophyll appears yellow-green alternating muffles, and the vascular bundles turn brown when the diseased stems are planed, and the roots and rhizomes turn red, the roots rot, and finally the whole plant withers. Control methods: choose varieties resistant to blight.

It is cultivated with high furrows or ridges. Apply well-rotted organic fertilizer and drain it in time after rain, and flood irrigation is strictly prohibited. Crop rotation for more than 3 years in seriously ill areas should be implemented.

2. Celery root rot Symptoms: It is mainly harmful to the root and stem base, and the damaged place begins to grow reddish-brown lesions with water invasion.