How to treat the rot of the growing cabbage and what to do with the rot of the roots of the cabbage

The black spots inside the Chinese cabbage are mainly viral diseases caused by viruses, and the symptoms are obvious and serious in the later stage, and there is no good control drug at present; These dark spots may also be infected with gray star disease, which can be controlled with agents such as mancozeb. These two diseases are more difficult to prevent because they occur inside Chinese cabbage. Chinese cabbage is shriveled and rotten from the outside in, and this comes in several forms, one physiological and the other pathological.

Physiological can be divided into several situations, one is due to the dry soil, low atmospheric humidity, frost damage, and the greenhouse is also caused by soil salinity, which needs to be watered and anti-freezing, and the greenhouse also needs to be watered and salted; The other is the lack of a trace element in the soil such as calcium, manganese, etc., which will cause the outer edge of the inner leaves of Chinese cabbage to wither and rot, which is called Chinese cabbage dry heartburn, which can be sprayed with 0 7 calcium chloride and an appropriate proportion of naphthalene acetic acid mixture every 7 to 10 days from the rosette stage, a total of 3 5 times of calcium supplementation; Or spray manganese sulfate once at the seedling stage, rosette stage, and ball-forming and centering stage, and spray 50 liters per mu. The pathological nature is mainly caused by the soft rot fungus in the root of the infection after the first damage to the base of the outer leaf to cause shriveled rot, can also be infected inside the Chinese cabbage to cause internal rot, the disease generally has an unpleasant odor, can be viewed in the rosette period, sprayed once every other week in the early stage of the disease, sprayed 2-3 times, the agent can be used 72% agricultural streptomycin 4000 times, or with Prik 800-1000 times the solution, or with 77% can kill 400 times the liquid. These liquids can also be used to water diseased plants and surrounding healthy plants, kilograms per plant.

Chinese cabbage is a vegetable that we often eat, which is grown in almost every household in the countryside and is also one of the common bulk vegetables in the market. Because Chinese cabbage has undergone high temperature in autumn and then exercised at low temperature, it needs more water and fertilizer, and once it is not properly managed, there will be a variety of pests and diseases. Chinese cabbage looks bright from the outside, but it is not uncommon for it to rot on the inside, mainly due to the following two diseases.

First, soft rot.

Soft rot is a bacterial disease that occurs mainly in the centering stage of Chinese cabbage. The most common symptom is that the base of the petiole and the heart tunnel tissue decay and turn into a viscous substance that emits a disgusting odor.

Because soft rot is a bacterial disease, all decaying tissues contain a large number of pathogenic bacteria, which will cause the spread of water or scavenging insects, which is extremely harmful.

For the prevention and control of this disease, in addition to doing a good job in water and fertilizer management, it is not to flood irrigation, and there can be no stagnant water in the field, and bacterial fungicides such as ammonium dyssen, copper hydroxide, copper sulfate, and copper ammonia can be sprayed to prevent and control the disease in the early stage of the disease.

Second, dry rot.

Chinese cabbage dry rot, also known as dry heartburn, is a physiological disease. The symptom is that the internal leaves of the Chinese cabbage are dry rot, as if they have been roasted, and lose their edible value.

The main cause of Chinese cabbage dry rot is the problem of water and fertilizer. For example, the soil is deficient in calcium, and the water is insufficient in the core stage.

For the problem of dry heartburn of Chinese cabbage, fertilizer and water management should be strengthened, such as soil topdressing with calcium fertilizer, boron fertilizer, etc., and foliar spraying with calcium.

In the heart-wrapping period of Chinese cabbage, it is the critical period of its water needs, and it is necessary to keep the ground not dry, generally watering once every 7 days or so. If there is a lack of water at this stage, it is not only prone to dry rot, but also affects the core of the Chinese cabbage, resulting in the plant being compact and not loose, which is what we often call the loose leaf cabbage.

In short, the phenomenon of Chinese cabbage is bright and ruined, which is roughly these two situations, you can combine the symptoms to determine whether it is a bacterial hazard or a physiological disease, do not delay the first time.

Rotten cabbage roots should be dug up in time.

The rot of cabbage roots needs to be dug up in time, and it needs to be destroyed immediately after digging out to avoid other cabbage infections with germs. Cabbage root rot is mainly caused by excessive watering and too wet soil, and the soil needs to be turned properly to speed up the evaporation of water in the soil. Dig a ditch in time to drain the excess water in the soil to avoid soil water accumulation and affect the normal growth and development of cabbage.

Pay attention to the cultivation of other cabbages:

To grow cabbage, choose a field that is ventilated and sunny, with a loose and breathable soil layer, and use a hoe to turn the field deep and dry it to eliminate weeds and pests. Cabbage has a certain degree of cold resistance, after the temperature reaches -3, if the temperature can gradually rise, it can also resume growth, but if it reaches -8, the temperature continues to drop to about -11, it can not resume normal growth and suffer from frost damage.

5-6 days after the emergence of cabbage seedlings, the first seedlings, to the weak and strong, strip sowing seedlings spacing 2-3 cm; When the Chinese cabbage has 3-4 leaves, the second seedling is carried out, the seedling spacing of the strip sowing plot is 8 cm, and about 3 plants are left in each hole when the hole is sown; After another 5-6 days, the third thinning is carried out.

If it is because of the rotten roots caused by the roots, the specific methods are:

In the early stage of Chinese cabbage growth, in case of high temperature weather, shade nets can be used to properly shade to prevent the formation of high-temperature roots. By cultivating and loosening the soil, the soil aeration is increased and the activity of good gas microorganisms is promoted. Cultivating can also regulate soil moisture status, which is conducive to root extension, and in the later stage of Chinese cabbage growth, cultivating is also conducive to raising ground temperature. Drain water in time after rain to prevent rain and waterlogging.

When the soil is short of water and needs to be watered, the amount of water should be appropriate, and it is strictly forbidden to flood irrigation, so as not to cause root accumulation caused by stagnant water.

<> when the cabbage root rot occurs, it needs to be reasonably solved according to the cause of the disease, and the root rot caused by cabbage is mostly caused by soft rot or too much soil moisture, because of the root rot caused by soft rot, usually can be used 70% Dixon 600 times for root irrigation, or with 20% Runka 600 times spraying treatment, and because the soil moisture is too much caused by the rotten roots, it is necessary to reasonably cultivate and loosen the soil, enhance soil aeration.

1. What to do if the cabbage roots rot

1. When the root of cabbage rots, it is generally necessary to choose the appropriate method for prevention and control according to the cause of the disease, such as the rotten root caused by soft rot, which can generally be irrigated with 70% Dixon 600 times, or sprayed with 20% Runkella 600 times, 47% Garinon 800 times and other agents.

2. Because the soil moisture is too large, resulting in root soaking and root rotting, it is generally necessary to reasonably carry out tillage to loosen the soil, enhance soil aeration, so that the good air microorganisms can better move, and at the same time, reasonable tillage can also improve the moisture situation of the soil, which is conducive to the extension of the root system.

3. Usually in the early stage of cabbage growth, because the temperature is relatively high, it is easy to have high-temperature rooting, and in the later stage of cabbage growth, with the decrease of temperature, it is also easy to appear low-temperature rooting.

2. What is the cause of cabbage root rot?

1. Reasons. Because cabbage is not tolerant to waterlogging, after continuous rain or flooding, its roots will be unable to breathe and cause tissue necrosis, resulting in root rot.

2. Precautionary measures.

1) It is not advisable to plant cabbage on low-lying and sticky plots, and it is necessary to sow cabbage on plots with high terrain and good drainage to avoid stagnant water in the plots, which will lead to root soaking and root rot.

2) Soil moisture should be controlled at ordinary times, and the stagnant water in the field should be discharged in time after the rain to avoid stagnant water in the field.

3) When watering, it is necessary to reasonably control the amount of watering, and it is strictly forbidden to flood irrigation with large water to avoid the situation of rooting and rotting roots.

4) In the early stage of cabbage growth, if you encounter high temperature weather, you can use a shade net to properly shade to avoid the phenomenon of high temperature rooting.

The method of leaf rot disease of cabbage is as follows: spraying 3000 4000 times of streptomycin sulfate or 72% agricultural streptomycin sulfate soluble powder, or 4000 times of new phytomycin, once every 10 days, 2 3 times in a row.

Cabbage rot disease is one of the more serious diseases in the cabbage planting industry, which will affect the quality and yield of cabbage, and should be reasonably changed when planting Chinese cabbage, long-term sitting will cause pathogens to parasitize in the soil, and it is easy to be infected with rot disease in the rainy season.

In the high incidence period of rot disease, prevention should be done, and timely spraying should be carried out in the early stage of the disease to prevent the spread of germs. The germs should be pulled out in time and taken out of the field for destruction.

Cabbage suffering from rot disease, can be sprayed 75% chlorothalonil wettable powder 600 times liquid to prevent and control at the beginning of the disease, if the disease is serious, you need to use 69% Anker manganese zinc wettable powder 900 times liquid liquid irrigation roots, in order to prevent cabbage rot disease, to choose a strong resistant variety for planting, and wait until the crop is harvested, to deep plough the soil.

Cabbage suffering from rot disease, can be sprayed 75% chlorothalonil wettable powder 600 times liquid to prevent and control at the beginning of the disease, if the disease is serious, you need to use 69% Anker manganese zinc wettable powder 900 times liquid liquid irrigation roots, each plant to irrigate 75-100 ml of medicine.

After the cabbage is infected with rot disease, it begins to develop disease from the heart stage, the bottom of the plant will produce translucent infiltration spots, and then the lesions gradually expand into gray-white, when the disease is severe, the leaves wilt and fall off, the leaf balls will be exposed, and finally the whole plant dies, rot disease is a bacterial disease, often in the spring when the temperature is low, the humidity is high, after the temperature warms up in July, the Chinese cabbage begins to bulb the stage, at this time the rot disease also enters the high incidence period, after September, the precipitation increases, resulting in the increase of humidity in the field, The rot disease has entered its peak period.

To prevent cabbage from rotting disease, it is necessary to choose varieties with strong disease resistance for planting, and after the crop is harvested, it is necessary to deepen the soil to speed up the decay and decomposition of the diseased residues, and at the same time pay attention to not let the field produce stagnant water, otherwise the excess water needs to be discharged in time.

When planting Chinese cabbage, it is good on the outside but rotten on the inside, because the cabbage lacks calcium. Cabbage is prone to symptoms, and if it is rotten, it must be supplemented with fertilizer. In the process of planting, it is necessary to focus on supplementing calcium to Chinese cabbage, and you can also sprinkle some lime in the soil.

Only by making the soil fertile can cabbage grow better and better. Don't think that there will be nothing wrong when the cabbage grows, if you don't fertilize it regularly, there is no way to make the cabbage harvest. Be sure to spray calcium fertilizer from top to bottom before wrapping the core, so that it can be well absorbed.

The most common disease of Chinese cabbage is downy mildew, which occurs from flowering to fruiting. When you notice some small spots on the Chinese cabbage, don't be careless at this time. Diseased leaves will appear like white frost and will slowly wilt.

When the temperature is relatively high, cabbage will grow this disease, and you can choose to buy some sprays for prevention and control. The disease of spraying cabbage several times in a row can be very good**, and you don't have to worry about not being able to harvest. <>

If you want to grow this cabbage all year round, you have to change the planting area every season. It is necessary to balance the trace elements in the soil so as not to have a certain impact on the crops. After choosing the soil, be sure to choose some organic fertilizers that are not chemically active.

Although the use of fertilizer can help cabbage grow faster, it does not have the premise of disease control. <>

In general, when planting cabbage, it is not only necessary to carry out timely top dressing, but also to allow the fertilizer to be well absorbed by the roots. If it can be replenished in a short period of time, this method of fertilization is still very good. It must not be allowed to rot or become seriously ill.

The applied fertilizer must allow the cabbage to be well absorbed before it can be sold at a good price. If it rains, the cabbage must not be exposed, and it must be protected in time.

It may be that the cabbage lacks calcium, or it may be that it has soft rot, so we must pay attention to spraying more pesticides to prevent insect pests in time, and then clean up the stagnant water.

It may be because of the soft rot of cabbage, which has been eaten by insects and infected with some bacteria before the cabbage is wrapped.

The first point may be that survival must be paid attention to, and the second point is that there may be decay or some special germs in it, and the drug should be dispersed in time.

72% agricultural streptomycin sulfate soluble powder 3000-4000 times liquid, neophytomycin 4000 times liquid, 14% copper ammonia aqueous solution 350 times liquid, 47% Garinone wettable powder 700-750 times liquid. Spray once every 7-10 days, 2-3 times in a row.

Cabbage preservative. Add 15 to 20 kg of water per 15 grams, and spray once in the growth period and heart-wrapping stage of cabbage to enhance the disease resistance of cabbage. At the same time, it has a significant preventive effect on soft rot, black rot, downy mildew, virus disease and other diseases of cabbage.