How to treat cabbage seedlings from diseases and pests? White cabbage seedlings are white and colored: illness and their treatment

Diseases and pests of cabbage seedlings. How to deal with diseases of cabbage seedlings? How to reanimate the sick cabbage seedlings?

The content of the article

Everyone loves to harvest cabbage in the fall, but few people like to mess with the seedlings of this culture. The fact is that the cabbage is subject to numerous diseases and the attack of pests. This capricious vegetable with improper planting and care is able to deliver a lot of problems and experiences to its divorces.

In this article, we will consider the most common diseases of cabbage seedlings and methods of combating them.

White spots and holes appeared on the seedlings of cabbage: what to do?

What to do if white spots and holes appear on the seedlings of cabbage?

Most often, the causes of the mentioned symptoms on the seedlings of cabbage are false powdery mildew or white rot. Both diseases are not fatal for the plant, but can lead to the death of a large number of sheets, both external and in the middle of the head.
Methods of combating these diseases are absolutely identical. To get rid of false powder and white rot, it is necessary to treat the plant with special chemical solutions (copper sulfate, burgundy fluid or other copper -based products).
In order to prevent and avoid the processing of finished seedlings with pesticides, it is advisable not yet the stage of preparation of seeds for planting to withstand them in the planrizoma or TMTD, as well as arrange heat treatment (first place in hot water with a temperature of 50 degrees, and then abruptly immerse into cold water by several minutes).
Careful preparation of soil for planting the plant using the soil disinfection and its purification from weeds, as well as other malicious residues, will help prevent the formation of cabbage on the cabbage on the cabbage and holes. Such measures are necessary due to the fact that spores of powdery mildew and white rot live and develop in contaminated soil.

Why does cabbage seedlings turn yellow and dry?

Why are the leaves of cabbage seedlings turn yellow and wither?

The causes of yellowing and drying of cabbage seedlings can be in weather conditions. If the seedlings were planted in the ground, and in the yard there is sultry, sunny, calm weather, then under the influence of sunlight cabbage leaves can easily turn yellow. On such days, this culture must ensure frequent, but moderate watering, since abundant soil moisturizing can lead to rotting of the root system.
The appearance of yellow leaves and their wilting in the first days after the transplantation of cabbage seedlings into open ground are considered the norm. Thus, the plant reacts to the stress that it had to transfer.
However, it is necessary to ensure that only the lower cotyledon leaves are darkened and yellow.
Another reason for yellowing and drying of leaves on the seedlings of cabbage is a lack of potassium. In this case, you can feed the plant with potassium sulfate (12 g of potassium sulfate per 10l of water).
In addition to such simple and safe reasons for the appearance of yellow and drying leaves on cabbage seedlings, there are two more, more serious diseases that can lead to such consequences. This is a black leg and keel.
The black leg is usually accompanied by the refinement of the stem of the plant and the subsequent wilting of the leaves on it. Favorable factors contributing to the development of this disease are increased moisture and acidity of the soil.
Effective prevention of a black legs can be called thorough disinfection of the soil before planting cabbage seedlings in it and its deoxidation using wood ash. The second preventive agent is the preliminary processing of cabbage seeds before planting in special industrial mixtures.
Kila is an even more dangerous disease than a black leg. The only way to deal with this ailment is the destruction of all infected plants and thorough disinfection of soil after them.
Signs of the keel can be called the growths formed on the roots of plants and swelling, which prevent the intake of the required amount of water, as well as nutrients into the stem and leaves.
Prevention of Kila is thorough processing of land for planting seedlings with a 1% solution of potassium permanganate. You can not do without a similar procedure, since the Kila virus can exist in the affected grounds up to 5 years.

Why did the cabbage seedlings become purple leaves?

What are the leaves of cabbage seedlings become purple?

The reason for the appearance of purple leaves on the seedlings of cabbage may be a banal shortage of nitrogen and phosphorus. In this case, the plant needs to be fed with nitrogen and phosphorus-containing complex fertilizers.
Also, high humidity, low temperature or stress after transplantation can provoke such manifestations on cabbage.
A dangerous cause of purple leaves on seedlings can be considered a black leg.

In seedlings of cabbage, leaves are twisted: what to do?

What to do if the seedlings of cabbage are twisted?

The first reason for twisting the leaves of cabbage seedlings can be called a lack or excess moisture, as well as nutrients in the soil. Excess nutrients in the ground is very often due to the application of excessive amounts of fertilizers. Gardeners on this subject have their own advice for beginners: “It is better not to feed the plant than to overfeed!”
Expressing efforts when feeding cabbage can lead to burns on the leaves of its seedlings. As a result of the pesticide burn, the foliage can also twist.
A dangerous pest that provokes the appearance of the mentioned symptoms is cabbage aphid. You can fight it by spraying the plant with a decoction of tobacco dust, a dust of metaphos or anabazin-sulfate.
As a prevention from cabbage aphids, it is necessary to regularly examine the lower part of the cabbage leaves, in the fall, deeply dig the site and remove all the remains of the previous crop.
The second pest of cabbage seedlings is whiteflies. This insect with a snow -white body lays out cabbage of its larvae on the bottom of the leaves of the cabbage, and then completely destroys the plant.
It is almost impossible to fight the larvae of whiteflies, since their bodies are covered with a special wax composition that does not pass the pesticides inward. But adults can be poisoned with special chemicals.

On the seedlings of cabbage black leg: what to do?

What to do with a black leg on the seedlings of cabbage?

A black leg is a dangerous fungal disease that affects both an adult plant and its seedlings.

Signs of a black leg on the seedlings of cabbage can be blackening the root neck, and then its stem.

A safe environment for this fungus is considered increased humidity, acidic and warm soil, densely planted plants.

In order not to provoke the appearance of a black leg, it is necessary to regularly ventilate the room in which the seedlings are located, plant it at the right distance, water it as needed and control the acidity of the soil.

Dolomite flour or wood ash will help to deoxidize the soil.

In preparation for the sowing of cabbage seedlings, it is advisable to take the following measures:

Disinform the soil by warming, endurance in severe frost or processing with special drugs.
Disinform the seeds by aging them in special solutions or heat treatment.

In the case when at least one of the plants is already infected with a black leg, it is necessary to remove it from a common container or beds, transplant the rest of the seedlings into another box, and throw infected soil, or treat healthy seedlings of a burgundy liquid, a solution of manganese.

Why is the cabbage seedlings not growing?

Cabbage seedlings are not growing, what to do?

There may be a lot of reasons:

The inappropriate place for landing (the conditions of crop rotation, too dark and cold area).
The wrong time for planting seedlings.
Unscrupulous preparation of soil for sowing seeds of seedlings (not fertilized, not disinfected).
Incorrect care for seedlings (temperature, watering, fertilizer, lighting).
Damage to diseases or pests.

The seedlings of cabbage are withering: what to do?

What to do if the seedlings of cabbage are noted?

With this kind of problem, the most important way to deal with it is to accurately determine the cause of its occurrence.
The plant must be carefully examined, analyze its condition and try to find out what could have affected it so adversely (landing, care, illness).
Only after the correctly conducted analysis and the diagnosis can be taken any actions (reanimate seedlings, change the conditions of its stay, process it).

What to do if the seedlings of cabbage stretched, outgrowed?

What to do with a stretching seedlings of cabbage?

The reasons for this can be numerous violations when planting or care.

It is possible to help seedlings in this situation in the following ways:

Find out the causes of the plant stretch and eliminate them (change watering, lighting, temperature, top dressing, or simply dive).
To deepen the stem of seedlings to the level of the seven -dimensional leaves, and cut off the top.
Cut the top of the plant at the level of the fifth leaves and germinate a cut sprout in a glass of water - thus two equal seedlings will turn out.
To deepen part of the seedlings of the seedlings in the ground, laying it in it in the form of a loop, bury the loop, compact and pour it.
Process the plant with special products that dull growth.

How to plant overgrown seedlings of cabbage?

How to plant an elongated seedlings of cabbage?

When planting outgrown cabbage seedlings into open ground, you can perform a number of actions that allow you to slightly slow down its growth upward:

Pinch the tip of the root of the seedlings.
To deepen the seedlings to the cotyledon.
Make a loop from the stem of seedlings in the ground, dig it and valuation.
After 7-10 days, feed the plant with potassium fertilizers or a solution of wood ash.

Aphid on seedlings of cabbage: how to fight?

How to deal with aphids on cabbage seedlings?

Capuster aphid is a small parasite that affects the leaves of the plant. The first signs of the attacks of aphids on the seedlings of cabbage are white or brown plaque on the leaves and their subsequent twisting.
Effective means of combating cabbage aphids are considered a decoction of tobacco leaves or a solution of anabazin-sulfate. These means need to treat a sick and healthy seedlings.

The seedlings of cabbage froze: what to do?

What to do if the seedlings of cabbage froze?

In this case, you can try to rehabilitate seedlings in the following ways:

Pour the cabbage with cold water, but not icy.
Process seedlings with special restoration means, like epin.

Is the seedlings of the cabbage afraid of frosts?

Is it worth it to be afraid of the seedlings of the cabbage of frost?

Any seedlings are afraid of strong prolonged frosts.
Prepared, hardened cabbage sprouts can withstand temperatures up to -4 degrees.