What if the seedlings are sick?

Black leg, powdery mildew, root rot - these and many other diseases can affect the seedlings while growing on the windowsill. Even strict adherence to agricultural engineering cannot always guarantee one hundred percent protection.

The darkening and curvature of the stem, plant lodging, brown coating on the shoots, spots on the leaves of seedlings indicate the presence of dangerous diseases that can lead to the death of the plants.

Black leg in seedlings

The cause of this fungal disease is contaminated soil. The defeat of seedlings begins after the creation of "favorable conditions" - excessive soil moisture and too high temperature in the room.

At the initial stage of the development of the disease, the stem darkens and becomes thinner, and it may twist slightly. In the place where the defeat occurred, a constriction appears.

  • If seedling contamination occurs in young years (in the phase of cotyledonary leaves), the plants first turn yellow, then rot and lay down, they can be easily pulled out of the soil.
  • If blackleg struck plants before landing in the ground, the stems they do not rot, and dry up. Such saplings do not die, but start to lag behind in growth, their root system develops poorly, which is why plants planted in the ground take root worse, lag behind in development and produce a lower yield.

Blackleg

How to fight?

Fighting the black leg is almost impossible. Prevent the development of the disease will help preventive measures:

  • before sowing seeds, be sure to disinfect the soil;
  • do not allow thickened crops, as well as too high temperature and humidity in the room;
  • do not overpower the seedlings;
  • more often loosen the soil in tanks and ventilate the room;
  • after watering, sprinkle dry sand on the ground;
  • remove diseased plants together with the soil in which they grew, capturing several neighboring plants, and place the place where they grew, with a solution of potassium permanganate (1.5 g per 10 l of water).

Root rot seedlings

The causes of this fungal disease can be excessive moisture and fertilizing, watering the plants too cold or, conversely, with hot water, a poor-quality substrate.

Indicate the presence of the disease brown plaque on the root of the neck seedlings thinned stem and pale leaves. Plants affected by root rot quickly die. Therefore, when a disease is detected, it is first necessary to protect healthy specimens.

Root rot

How to fight?

To prevent other plants from root rot, the diseased specimens must be removed immediately. At the initial stage of the development of the disease, the substrate under infected plants can be sprinkled with sand, chalk or humus. Then they need to be treated with special preparations (for example, copper-containing fungicides or Fundazole). If these measures do not help, the affected plants should be removed immediately.

Gray rot on young plants - how to get rid

If the leaves or stalks of seedlings become visible pale brown spots, plants suffer from gray rot. In plants that are in too much moist substrate, these stains may be wet and covered with pink fluff.

Gray rot

How to fight?

It is necessary to treat sick seedlings immediately by treating 4 times (every 10 days) with copper-containing fungicides (Bordeaux liquid, copper sulfate, copper chlorine, Kuproksat) or pink solution of potassium permanganate. Also against the gray rot helps and infusion of garlic (30 g of crushed cloves pour 5 liters of water and insist two days).

Powdery Dew on Sprouts

White bloom on the leaves of the plants, which eventually becomes denser, suggests that they are affected by powdery mildew. Over time, affected plants leaf shape changes and stalks. Then the affected leaves completely dry out and fall off.

Mealy dew

How to fight?

Sick seedlings should be treated (sprayed) with a 0.5% solution of soda ash or Fundazole. Plants will need this treatment once a week for 2-4 weeks.

Fusarium seedlings wilt

This disease is extremely insidious, because it is not only capable of being transmitted through the seeds, but can "subside" for a while in the ground in the remains of planting material. When infecting, the rhizome of the plant suffers first, followed by turn pale and dry leaves. Because root of the plant rotsit is very easy to get the affected specimens from the soil.

Fusarium wilt

How to fight?

If you find diseased plants, you must immediately remove them along with the ground. The remaining seedlings should be treated with Fundazole or another similar fungicide.

Dry rot (fomoz)

This fungal disease is transmitted through seeds. On the stem, leaves of seedlings, cotyledons appear light blurred spots with black dots. Stems gradually dry out and become rotten. As a result, the plant develops poorly and dies.

Fomoz (dry rot)

How to fight?

As is the case with the black leg, curing diseased plants is almost impossible. Therefore, they must be immediately removed along with the soil in which they grew. Pre-seeding disinfection will help prevent the development of the disease.

Observe agricultural practices and more often inspect your seedlings - these measures will help to prevent the development of diseases or, in extreme cases, to identify infected plants in time and take action.

Watch the video: How to Revive Sick and Dying Plants (November 2019).

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