Fungicides for tomatoes: top 7, greenhouse and outdoor use

Very often, in rainy summers, our plants are exposed to various fungal diseases. To prevent this from happening or to pass with minimal consequences for the plant, we use fungicides. There are a lot of drugs that fight fungal infections now. Before using them, it is imperative to study the mechanism of action, the method of application and other important information, so as not to cause even greater harm to our plants. Let's take a look at some fungicides for tomatoes.

Fungicides for tomatoes: description and types

Fungicides are chemicals that help fight fungal and bacterial diseases in plants. Currently, scientists have developed a huge number of such drugs that do not harm the immunity of the plant itself.

Fungicides are divided according to the following characteristics.

by origin:

· Inorganic - the composition includes active substances based on copper, sulfur, iron, manganese, potassium, etc. They adhere well to plants and act against a wide range of pathogens. But they can cause damage to the plants themselves, for example, burns, and they also decompose for a long time in the soil, since they contain heavy metals.

· Organic - in the composition of the classes of various chemical compounds (carbamates, triazoles, phthalimides, morpholines and others). These fungicides most often affect a specific type of pathogen. Compared to inorganic, they decompose faster in the soil.

· Biological - created on the basis of living organisms (from plants, fungi, bacteria, etc.). These drugs are considered the safest for plants.

by the object of application for:

· Soil treatment;

· Seed;

• dormant plants;

· Plants during growth.

by the nature of the impact:

· Contact - after treatment, they stay on the surface of the plant for a long time and lead to the death of the pathogen upon contact with it;

· Systemic - they penetrate into the plant and, moving through the vessels, suppress the vital activity of the pathogen.

by appointment for:

· Prevention of the disease;

· Increasing the immunity of plants;

· Treatment

by look:

· Simple;

· Combined - can be used together with other plant protection products from fungi and insects. And also together with fertilizers and growth stimulants.

Fungicides for tomatoes: effects

These drugs act on pathogens, various diseases in several ways:

· Disrupt the activity of the respiratory centers;

· Sterilize microorganisms;

· Violate the process of division of nuclei in cells;

· Disrupt the synthesis of ergosterol, which is one of the main components of cell membranes .;

· Block the synthesis of nucleic acids, and thereby disrupt the synthesis of proteins in the cell of the pathogen;

· Violate energy metabolism, i.e. pathogens cease to receive the energy necessary for life in the form of ATP molecules;

· Increase the synthesis of antibiotics and phytoalexins in plants;

· Neutralize harmful substances released by fungi and bacteria;

· Create barriers that protect healthy tissue from damage.

Application rules

Seeds, bulbs, tubers, rhizomes are treated with fungicides in the fall after they are collected and dried.

It is also better to cultivate the soil in the fall, since in the spring it can slow down the growth of the plants themselves.

Perennial plants are treated in the spring, before the plant wakes up, i.e. before the appearance of the kidneys.

For processing, you can use it both dry and prepare a solution.

The terms of protection and the number of treatments depend on the type of pathogen, on the type of the plant itself, on the period of its growth, on the weather conditions. Basically, contact fungicides protect for two weeks, systemic up to a month.

In order to avoid the addiction of the pathogen, their use must be alternated to the same fungicides.

For indoor plants, fungicides are used to boost immunity and to fight disease and prophylactically.

Types of effective fungicides. Quadris

The drug has a contact - systemic action. Protects plants from a wide range of diseases. It belongs to a new class of pesticides - strobilurins, which effectively protect plants.

It suppresses the vital activity of fungi, stops the growth and spread of infection. Effective against: powdery mildew, late blight, spotting, anthracnose and others.

Fungicides for tomatoes: Ridomil

Very strong fungicide. Provides systemic contact action. It looks like granules, which do not generate dust when used. It is used to protect fruit and vegetable plants from alternaria, peronosporosis, late blight. Ridomil can be combined with pesticides.

Acrobat

Fungicide is used both for the prevention and treatment of late blight, potato alternariosis, cucumber peronosporiosis, mildew on grapes.

Agate

It is a biological product with fungicidal and growth stimulating properties. It is used to enhance immunity in plants, to stimulate seed germination and plant growth, to protect plants from root rot, spotting, powdery mildew, late blight, Alternaria and others.

Fungicides for tomatoes: Maxim

Contact drug. Plants are processed before planting in the ground. Protects against various types of rot. Helps save crops.

Fundazol

It looks like a white powder with an unpleasant odor. For use, you need to make a solution. It has a contact-systemic effect. Effective against cabbage keel, powdery mildew, scab, mosaic spot and other diseases.

Bordeaux mixture

Contact fungicide, which has been tested for years. Contains copper sulfate and lime.

Reliably protects plants from the most common diseases.