Types of fungicides for cucumbers in a greenhouse and instructions for use

Greenhouse-grown cucumbers require treatment, even preventative measures. Typically, indoor conditions are warm and humid. These conditions, in turn, provide ideal conditions for the growth of fungi, bacteria, and various insects. Developing alongside the plants, they consume not only the green parts of the plant but also the fruits themselves. Therefore, the use of fungicides for cucumbers in greenhouses is essential.

Classification of preparations for protecting cucumbers from diseases

To combat vegetable crop diseases, biological and chemical agents are used.

Biological

Modern people are accustomed to using chemicals. Not everyone considers the harm they can cause. Harsh substances in chemicals harm both people and the environment.

Biological drugs have recently become popular. They offer a unique alternative to chemicals. Biological drugs are products made from living organisms:

• antagonist fungi;
• bacterial viruses;
• bacteria.

Manufacturers produce products based on beneficial insects. These products may also contain biological toxins.

Biological products act slowly but are harmless. They are safe for health and environmentally friendly.

Chemicals

Chemical-based products are used to protect crops from insect infestations and diseases. Chemicals can kill weeds in beds with healthy crops. While these products are expensive, their rapid action and complete pest eradication justify their use.

Types of fungicides: spectrum of action and instructions for use

Fungicides are a type of chemical used not only to protect vegetable crops but also for preventative purposes. A distinction is made between systemic and topical fungicides. In the former case, the active ingredient penetrates deep into the tissue of the sprayed crop. By destroying parasites from within, the therapeutic effect is achieved.

In the second case, the sprayed substance remains on the surface of the cucumbers. This prevents pests from penetrating the plants. There are many products available for combating various cucumber diseases.

The drug "Hom"

The medicine's properties have been compared to copper sulfate and Bordeaux mixture. However, its effectiveness is several times greater. To achieve the desired result, the application instructions must be followed.

"Khoma" is a green powder. It's used to prepare a solution for treating cucumber crops. It's most often used as a preventative measure.

The active ingredient in "Khoma" is copper oxychloride. It belongs to a group of fungicides with contact action. Without penetrating tissue, it creates a protective film that prevents bacteria and fungi from entering the plant.

Fungicide "Bravo"

This product has a contact effect and is specifically designed to protect cucumbers and other vegetable plants from various types of fungi. It is effective when used preventatively. The main component is chlorothalonil. It is available as a suspension.

The main advantage of "Bravo" is the presence of adhesive substances in its composition.

These ensure even distribution and adhesion of the medication across the plant's surface. "Bravo" is resistant to precipitation, so there's no need to re-spray after precipitation.

Teldor

Teldor is applied one to three times per season. It is less toxic than other treatments and is safe for the environment and the person performing the treatment. Teldor can be used concurrently with other fungicides.

Using Previkur for seedlings

The product's base is propamocarb hydrochloride. Previkur is considered a systemic product. Previkur can be applied by either watering or spraying.

The substance quickly spreads over the surface of young plants. After treatment with Previkur, cucumbers are protected from pests and various diseases. Along with providing protection, Previkur stimulates the full growth and development of seedlings.

Features of Previkur-Energy

This product is intended for the prevention and treatment of cucumber seedling diseases. It can be used both indoors and outdoors. It is effective against the following diseases:

1. Root and root rot.
2. Downy mildew or peronosporosis.
3. A number of other plant pathologies.

If the first signs of disease are noticed, it is recommended to remove infected crops. Only healthy plants should be treated. Previkur Energy is used as a spray on cucumbers or added to water for drip irrigation. It is most often used during the growing season.

Using Bordeaux mixture

Vegetable growers often notice Signs of spotting and downy mildew on cucumbersHowever, most of them prefer to use an old, tried-and-true remedy to combat diseases: Bordeaux mixture. A solution is prepared from this mixture, typically applied during the crop's fruiting period.

The product is effective only if the spray solution is prepared correctly. Correct preparation can be determined by the color of the solution. The prepared solution has a light blue color.

Failure to follow the recommended dosage during preparation will result in a green, acidic solution. If a person takes the risk and treats cucumber plants with the resulting solution, burns will appear on the cucumber leaves. Over time, the leaves will fall off, and a characteristic net-like pattern will appear on the fruits themselves.

Aliette

This systemic fungicide protects cucumbers from a variety of diseases. It's available as a wettable powder in 1 kg bags and 10 g sachets. The fungicide not only combats diseases but also enhances the crop's protective properties. "Alyette" offers the following advantages:

1. It is not washed away by precipitation or when watered with ordinary water.
2. Protects not only the treated parts of the bushes, but also newly formed shoots.
3. Effective in the fight against fungal diseases.
4. It is characterized by a long-lasting effect, due to which the need for re-treatment disappears.

"Alyett" is a preparation that does not cause resistance in pests.

Ridomil Gold

Used to treat downy mildew in cucumbers. It protects branches, leaves, and fruit. It decomposes quickly in the soil and destroys the pathogen that causes downy mildew. Spray cucumber crops in the morning or evening.

Ridomil Gold is classified as a Class II hazard to humans. Disposal of the product into bodies of water is prohibited, as it is harmful to aquatic life.

Thanos

Another effective treatment for cucumbers against downy mildew. It is also used to treat other plant diseases. To prepare a spray solution, you will need 15-20 g of the product per bucket of water.

"Acrobat"

Advantages of the drug:

• stops the formation of fungal spores;
• used for treatment and prevention;
• characterized by prolonged exposure;
• destroys the pathogen in a short time.

"Acrobat" is a popular remedy for treating cucumbers.

"Topaz"

Topaz is the number one treatment for powdery mildew in cucumbers. It is intended for use when the first signs of the disease appear on the plants. Preventative treatment is also used if powdery mildew is suspected. Spraying should be done at least three times every two weeks.

Use of the drug "Quadris"

Fights mold and various types of fungi. Quadris is a new-generation product belonging to the strobilurin class. It is used to treat cucumbers grown in high-humidity conditions. It also prevents downy and powdery mildew in cucumber crops.

Sumilex

This cucumber protection product accumulates in the above-ground parts of the plant. After treatment, it prevents the development of mycelium and the growth of gray and white mold fungi. To prepare a medicinal solution, the powder is diluted in water with lime. The latter ingredient can also be replaced with soap.

Fundazol

After treatment with Fundazol, the ingredients migrate within the plant, moving from the roots to the top. It kills spider mites and aphid larvae. Fundazol is used to prepare a solution and is classified as a hazard class 3 pesticide.

Strobie

It has a strong medicinal and protective effect. When applied to the crop, it prevents mycelium from developing fully. Cucumbers should be treated with "Strobi" every 14 days. It is approved for use in cold weather. It is applied during the flowering period.

Infinito

Gardeners successfully use this product to care for cucumber crops. After treatment, the crops recover completely. Cucumber yields also increase.

What to choose for open ground and what for a greenhouse

When growing cucumbers in greenhouses, it's acceptable to use sulfur-, copper-, and carboxin-based products. General-purpose products are available commercially. They are typically used in open beds and greenhouses. Vegetable growers prefer sulfur-based products, which are less hazardous to humans and the environment.

How to properly apply fungicides

Before using the chosen product, study the instructions for use. Treatment is carried out taking into account the development and growth of the cucumbers.

Timing and frequency of treatments

The number of sprays depends on the type of disease and the severity of the cucumber infestation. Each product can be used a specific number of times.

Some medications are so strong that they are prohibited from being used to treat cucumbers more than 1-2 times.

Typically, cucumbers are sprayed during the growing season. Products that are safe for humans and the environment are used even during fruiting. As for greenhouses, the room is treated before planting cucumbers, as well as after harvesting.

Bush processing technology

The procedure requires vigilance from the person performing the treatment. The plant's leaves are sprayed on both sides. The treatment process consists of several stages:

1. Preparing special clothing.
2. Preparing the solution.
3. Spraying.

Prepare a fresh solution each time you spray. Avoid using the same solution too often. Rotating solutions prevents microorganisms from becoming accustomed to a specific formula.

Safety precautions when working with chemicals

When working with protective and treatment products for cucumbers, remember to take safety precautions:

1. Clothing intended for working with chemicals must completely cover the skin.
2. Medical gloves are put on the hands, and a mask or respirator is used.
3. The eyes are protected by glasses with transparent glass.
4. After spraying, remove clothing, clean it, and keep it away from everyday wear.
5. After treatment, you must take a shower and wash your hands thoroughly.

Fungicides are products that help protect cucumber crops from pests. Treatments, both curative and preventative, guarantee a good harvest.