Why rot seedlings and how to avoid it?

  • Dec 24, 2019
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Reasons why rot seedlings grown in the home, there may be several. Sunlight indoors sprouts not enough, but because of the work at this time, the air heating in the flat dry. Moreover, the seedlings can be attacked various bacteria and pathogenic fungi.

Seedlings. Illustration for an article is used for a standard license © ofazende.ru
Seedlings. Illustration for an article is used for a standard license © ofazende.ru

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Symptoms and causes of the defeat

The main symptom is wilting of the leaves. Seedlings crouches to the ground due to necrosis of the root of the neck, causing the root dies, and the plant dies. This often occurs as a result of high humidity, abrupt temperature changes, too thick crops and improper care seedlings. The plant often affect basal and root rot, late blight, powdery mildew, and others. The most common abnormality is a blackleg.

With this disease at least once faced by virtually every gardener. Seedlings often suffers in the early stages of growth and development that manifest the characteristic constriction roots near the soil surface and blackening of the root portion. Upon closer inspection, visible on the stem off-white film. Older plants may die because of the waterlogging when seedlings are softened tissue, the stem becomes dark brown in color, and the leaves begin to turn yellow and wither.

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From microscopic pathogenic fungi suffers not only the root collar, but also stem. It happens that the pathogens are coated seeds themselves because they can remain viable for 1-2 years. But most of the malicious disputes themselves in the land where the plant material is placed. The negative impact can also have organic, immature compost or excess dosage of fertilizers, where microorganisms attack still immature or injured seedlings.
seedling cultivation. Illustration for an article is used for a standard license © ofazende.ru
seedling cultivation. Illustration for an article is used for a standard license © ofazende.ru

What steps to take?

All measures should be directed at addressing the conditions conducive to the spread of rot and mildew affecting seedlings with poor drainage, excessive moisture, or too much cold water containers in the absence of holes for drainage of excess liquid. When swordplay plants should not be much to fill in and submit them for cold loggias and balconies. The soil in the boxes need to be updated every season, even in the autumn of inventories from their plots of land. For this, the upper soil is cut and taken from the ground with a depth of 10 to 30 cm.

The soil should be loose, granular, free of weeds and debris. Spores of pathogenic fungi at this depth there is little, which is not the finished mixtures sold in specialty stores. This soil pathogens may be present due to the addition of large amounts of organic fertilizers.

Seedlings to not hit the black stem, watering in cloudy weather, you can not exercise, and moisten the soil as it dries. For preventing the ground pretreated unsaturated solution of potassium permanganate. If the plants are already affected, they should be removed along with the lump of earth. Often that above the damaged portion on the stem adventitious roots sprout, which allows to save the plant from death prisypav its top calcined sand or powdered ash.

Good result gives landings processing biologically active agents - fungicides, which are based on the beneficial bacteria. Neutralize pathogens "Trihodermin", "fitosporin-M", well-proven in the fight against blackleg. The same means are used, and as a prophylactic measure.

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