Measures To Control Mold In The Greenhouse. How To Get Rid Of? Prevention, Drugs, Means

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Measures To Control Mold In The Greenhouse. How To Get Rid Of? Prevention, Drugs, Means
Measures To Control Mold In The Greenhouse. How To Get Rid Of? Prevention, Drugs, Means
Video: Measures To Control Mold In The Greenhouse. How To Get Rid Of? Prevention, Drugs, Means
Video: 5 Ways To Ensure No Molds and Fungi Growth in Hydroponic Fodder 2023, February

A greenhouse is an enclosed space in which the soil is in special conditions. Unlike open greenhouse soil, it is devoid of the possibility of self-healing. All biological processes pass faster in it, negative flora and fauna accumulate more intensively. The rapidly depleting soil in order to ensure optimal growing conditions for the necessary products constantly requires replenishment with nutrients and moisture, sufficient lighting and air and soil temperature. Changes in air humidity in combination with high temperatures contribute to the rapid growth of molds that affect living plants, as well as destroy any wooden structures in greenhouses or greenhouses, which have a very negative effect on human health.



  • What are molds?
  • Places of the spread of mold fungi
  • Causes of mold in the greenhouse
  • Conditions for the spread of mold
  • Preventive measures and mold control in greenhouses

What are molds?

In the plant system, fungi are isolated into a separate kingdom in wildlife. In total, there are more than 250 species of fungal organisms, united by biological characteristics into groups and orders. In the modern international classification, molds (Fungi bissoidei) are allocated in the 6th order and are represented mainly by unicellular, less often by multicellular organisms. They are called micromycetes because of the microscopic size of the individual members.

Mold usually grows in large colonies, the appearance of which is represented by branching mycelium without large fruiting bodies. Most molds are obligate or facultative parasites (i.e., parasites that can live in the host environment or independently). Mold spores are able to survive in space, permafrost, in conditions of increased radiation. Only some species die when exposed to temperatures above +100 ° C for at least 3 hours.

Places of the spread of mold fungi

Molds can live and multiply in water or soil. Their large colonies are distributed throughout the world in warm, humid places with a sufficient nutrient medium. This environment for molds is greenhouse soil. The quality of the substrate determines the health of the plants, which depends on the quality of the grown seedlings. Changes in the quality parameters of the greenhouse soil have a negative impact on the growth and development of seedlings. The primary manifestation of damage to seedlings by greenhouse mushrooms begins with the appearance of a whitish bloom on the greenhouse soil, which is the mycelium of harmful fungi.

Causes of mold in the greenhouse

Violation of the rules of agricultural technology when growing crops and seedlings in protected ground conditions, which leads to the predominant development of pathogenic microflora.

Mold spreads mainly in dirty rooms. Therefore, the greenhouse must be systematically cleaned and treated with antifungal agents (wash, whiten, paint, etc.).

Greenhouse cleaning
Greenhouse cleaning

Conditions for the spread of mold

Microscopic spores are easily carried by air currents and can be dormant for several tens or more years. Under suitable conditions, rapid growth and reproduction begins with the capture of living plants with soft tissues (seedlings of vegetables, tomatoes, cucumbers, etc.).

The optimal conditions for the spread of harmful fungi are:

  • indoor air humidity above 95%,
  • indoor air temperature +20.. + 22 ° С,
  • lack of ventilation, poor ventilation,
  • increased soil moisture with stagnant water at the root system after irrigation, caused by improper irrigation, water leakage in places where the irrigation hose is damaged,
  • insufficient lighting (cloudy weather without additional lighting, insufficient amount of ultraviolet rays reaching thickened plantings).

Preventive measures and mold control in greenhouses

Mold is associated with the processes of biocorrosion and decomposition of vegetation. Therefore, mold grows most strongly in the autumn. However, one-time use of the preparations will not provide an effect in the fight against mold fungi. In order to create optimal conditions for the growth and development of plants, a system of measures is required in protected ground.

In the fall, after harvesting, the greenhouse / greenhouse is necessarily decontaminated in preparation for the next season of growing seedlings and vegetable crops in a non-seedling way. There are several ways to disinfect a greenhouse and soil.

One of the most effective ways to destroy mold is to treat the premises with a sulfuric block "FAS".

If mold was found in the greenhouse in the previous year, then in the spring it is necessary to repeat the disinfecting treatment of the room with a solution of potassium permanganate with the addition of adhesives (soap is possible).

During the period of growing seedlings and crops, constantly monitor the indicators of air and soil moisture.

Keep the watering system in good working order. Avoid waterlogging. When a black leg appears in the seedlings (one of the indicators of waterlogging), sprinkle the soil under the seedlings with dry sand. Ventilate the greenhouse thoroughly (no draft).

Mold does not tolerate an alkaline environment, therefore, the greenhouse soil under all plants 2-3 times a season with an interval of 3-4 weeks should be powdered with a mixture of ash and charcoal (1: 1), ground into powder.

Greenhouse ventilation window
Greenhouse ventilation window

If mold appears on the soil (especially compacted), you can treat the greenhouse soil with peat, which is represented by dry briquettes of high-moor peat. Peat contains a synthetic polymer that serves as a loosening agent for the soil and, when soaked, increases its volume several times. To neutralize the acidity of the soil, treatment is carried out with a copper solution of peat, water-soluble mineral fertilizers are added.

To prevent damage to plants by fungal diseases (black leg, fusarium wilting, root and root rot, etc.), 8-10 days after germination, plants are treated with biofungicides, using Phytosporin-M, Fundazol, Alirin-B, Gamair-SP, Planriz according to the recommendations -J. The same biofungicides can be used to treat the soil under plants. Treatments with biological products (soil and plant) are repeated after 15-20 days, unless otherwise specified in the recommendations.

When growing seedlings at home, it is better to use specialized soils, especially for beginners in gardening. Such soils are specially treated against diseases and pests and fertilized in accordance with agrotechnical requirements.

Growing seedlings and seedless crops in greenhouses and at home requires strict adherence to agrotechnical measures. Otherwise, the applied protective measures may not have the desired effect.

Remember - mold is not harmless to human health. In a room infected with mold, a person can get bronchitis, bronchial asthma, allergic rhinitis, otitis media. By settling on the lungs, mold spores cause lung diseases, up to oncological tumors. Do not use food, including vegetables and fruits affected by mold.

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