Potato fungicide: descriptions of the best products, application rules

Table Of Contents

Classification
How do they work?
List of fungicides for potatoes against late blight
Which drug is better to choose?
Application Features

Today, a large number of fungicides for potatoes are known. They differ in composition, mechanism of action, efficiency. To choose an effective remedy, it is necessary to take into account the characteristics of the disease and its severity.

All funds are divided into therapeutic and prophylactic, which allows you to choose an effective drug. Compliance with the rules for its use is of no small importance.

Classification

According to the nature of the action, fungicides are divided into 3 categories:

Protective - aimed at preventing the development of diseases. Such funds contribute to the protection of plants, but cannot cure them of pathologies. The preparations have a superficial effect and do not penetrate into the structure of the plant. They mainly affect the reproduction of fungal microorganisms and have a narrow spectrum of action.
Healing - cope with fungi that have penetrated the structure of plants.
Immunizing - get into the structure of plants and change their metabolism. This helps to avoid infection with fungi and disrupt the course of diseases. These funds affect the appearance, course and outcome of pathologies.

Taking into account the peculiarities of distribution, fungicides can be of the following types:

Contact - affect the focus of the disease only through direct contact with it. Such drugs do not penetrate into the structure of the potato, but are localized on the surface of the plant.
Systemic - get inside the culture and move through its body. Thanks to this, it is possible to cope with pathogenic fungi in all their locations.

How do they work?

The action of fungicidal preparations is different. Such tools help to achieve the following results:

disrupt the respiration of fungal microorganisms;
stop nuclear division of fungal cells;
stimulate the production of natural antibiotics in the plant;
form foci of necrosis that prevent fungi from entering he althy tissues;
suppress energy metabolism;
stop the formation of nucleic acids.

List of fungicides for potatoes against late blight

Fungicides that are used to treat potatoes are divided into 2 main categories - biological and chemical.

Biological fungicides

This group includes the following tools:

Alirin-B. It is based on a strain of the bacterium Bacillus subtilis. During reproduction, it leads to the suppression of spores of pathogenic fungi by displacing them from the soil. The tool is used to treat seed. Also, crops are sprayed with the substance during the growing season and potatoes are processed during storage.
Fitosporin M. The composition contains the bacteria Bacillus subtilis 26D. Also, the substance includes the waste products of phytobacteria. It also contains bioactive humic elements. The tool is used to prevent fungal and bacterial pathologies. It helps to stimulate the growth of potatoes and strengthen its immunity. The tubers are treated before planting, after which the crops are sprayed during development. The tool helps to preserve the harvest.
Gliocladin. The substance includes spores of the fungus Trichoderma harsianum.The tool is used for soil treatment and helps to suppress pathogens of root rot. The substance activates the growth of crops and increases the yield parameters. The solution of the drug is used before planting potatoes. They are also watered crops during the growing season.
Gamair. This is a bactericidal agent. It is successfully used in combination with Alirin-B. The composition contains spores of the fungus Bacillus subtilis. During growth, natural antibiotics are released that provoke the destruction of pathogens. The drug is used for watering the soil and processing crops during development.
Trichocin SP. The composition contains soil fungi-antagonists. They suppress the activity of pathogens of infectious pathologies in planting material and soil. Also, the substance helps to cope with pathologies of foliage and fruits. The composition is used to treat tubers before planting in the ground. They also spray the crop.

Chemical fungicides

Powerful chemicals include the following:

Consento COP. This is an effective tool that is used to protect potatoes and many other vegetable crops. The substance successfully copes with late blight. With its help, it is possible to cure peronosporosis and other fungal infections. The composition is easy to apply. To do this, it is enough to measure 20 milliliters of the substance, pour into water and mix. Fill the sprayer with the finished solution and spray it on the plant to completely wet the foliage.
Bordeaux liquid. This popular tool is used for seed dressing. The composition includes copper sulfate and quicklime. The tool is often treated with potato tubers for the prevention of rhizoctoniosis, late blight and other fungal infections. Substance analogues include Kuproksat and Hom.
Max. The composition of the substance contains fludioxonil.This tool has a pronounced protective effect. The drug promotes the destruction of fungi at the cellular level. It affects the uterine tuber and adjacent soil. The substance is often used to treat seed.
Celeste Top. This is a combined substance. It has an antifungal and insecticidal effect. The composition contains several active components that help protect the roots and leaves. It is enough to use the drug once. It is used to process planting material.
Acrobat MC. The composition contains 2 active ingredients. They form a protective barrier and enter the structure of the leaves. The substance provokes the death of fungal mycelium within a few days. The composition is used for the treatment and prevention of pathologies. The fungicidal solution is used during the development of the plant.
Flanobin. The substance has many advantages. It provides a high level of planting protection, has a long-term effect, is resistant to precipitation, increases stress resistance of crops, and reduces the likelihood of tuber infection.

Which drug is better to choose?

When choosing a drug, it is worth considering the type of disease. All fungicides are divided into several categories - therapeutic, prophylactic and immunizing. A specific tool is selected taking into account the tasks that need to be solved.

Application Features

When using fungicides, it is important to follow safety rules:

Choose the right place for planting potatoes. If you plan to use chemicals, the vegetable should be planted 20-30 meters from water bodies and sources of drinking water.
It is recommended to work with chemicals in closed clothes and shoes. It is also worth using gloves and goggles.
It is strictly forbidden to exceed the concentration of the working solution recommended by the manufacturer.