Instructions for the use of fungicides for grapes and the best preparations
Among the wide list of fungicides for the treatment of grapes, you need to choose the most effective and safe preparation. All of them prevent the spread of diseases dangerous to culture. The solution is made in accordance with the recommendations specified in the instructions. Do not exceed the dosage of the components yourself. Preventive and curative spraying is carried out at certain periods in compliance with certain rules.
Features of fungicides for grapes
Grapes are susceptible to infection with various infections. Diseases negatively affect not only the quantity and quality of the crop, but can also lead to the death of the bush. Many varieties have been developed that show high resistance to diseases, but sometimes even this does not save you from the problem:
- Fungicides are designed to eradicate disease and prevent further spread of infection.
- The preparations are used to protect young and adult plants.
- When used correctly, organic fungicides are harmless to humans and animals. Chemical components do not accumulate in fruits and do not change their taste.
Varieties
Manufacturers offer a large list of chemicals, which are divided into three types.
Systemic
Systemic drugs are used for preventive purposes, as well as for the treatment of already infected plants. The components of the solutions are able to penetrate deep into the tissues and are carried along with the sap to all organs of the plant. As a result, the growth and spread of pathogenic microorganisms is suppressed.
Systemic drugs, in contrast to contact ones, are characterized by the following properties:
- quickly penetrate the pathological focus;
- do not wash off with water;
- components are able to get rid of viral and fungal infections;
- three treatments for the whole season are enough to provide reliable protection against diseases.
The disadvantage is that the fungus quickly adapts to the incoming components, therefore, fungicides of the same group are not used more than twice a year.
Contact
Features of the use of contact drugs against grape diseases:
- The finished solution should be evenly distributed over the entire aerial part of the plant. Be sure to process the trunk, leaves and vine.
- The procedure is carried out in dry, calm weather. If it rains, the spraying is repeated again.
- The disadvantage of using such fungicides is the repeated treatment.To achieve reliable protection, at least 7 treatments are required.
- Contact fungicides are more suitable for prevention. They do not destroy the mycelium, so healthy plants or bushes should be treated, from which damaged parts have been removed.
- It is worth following the established scheme. If the next treatment is not carried out on time, then the damaged plant should be sprayed with systemic or complex preparations.
Complex
Fungicides of complex action are modern. They differ in efficiency and high speed of impact on the lesion focus:
- The funds combine the properties of contact and systemic drugs.
- Special care should be taken when using products, as the components are toxic to others.
- Substances fight infection at any stage of the development of the disease.
The most effective drugs
Among the many drugs, gardeners distinguish the following.
"Antracol"
The drug is intended to combat and prevent common fungal diseases:
- Refers to the group of contact drugs.
- To prepare a working solution, dissolve 10 g of granules in a bucket of water.
- The infected plant is treated three times with an interval of 11 days. The last spraying is allowed two months before harvest.
"Speed"
The drug is effective against fungal infections, has a systemic effect:
- To prepare the solution, it is enough to dissolve 5 ml of the substance in a bucket of water.
- After spraying, the protective effect appears within two weeks.
- The drug is safe for humans and animals.
"Mikal"
For the prevention and treatment of fungal infection, the "Mikal" agent is used. Spraying with a solution is carried out no later than three days after the first signs of the disease are detected.
"Cabrio Top"
Combined preparation that has a complex effect on the plant:
- The components are capable of being effective in contaminating grapes with multiple infections.
- In addition, the drug removes harmful insects.
- After treatment, a protective film is formed on all parts of the plant, which for a long time is not washed off by water and is not destroyed by sunlight.
- There is no need for frequent spraying, therefore the risk of accumulation of toxic substances in the plant is reduced.
Revus 250 SC
The drug has a complex effect. It is able to simultaneously protect the bush from mildew and Alternaria:
- For the entire growing season, it is recommended to carry out up to 4 treatments.
- The last spraying is carried out 3.5 weeks before the harvest of ripe bunches of grapes.
- Does not wash off with water.
- The components are safe for others.
"Garth"
It is recommended to process grapes with a solution based on this preparation up to 4 times per season. Work is stopped a month before the start of the harvest.
"Tilt"
For prophylactic and therapeutic purposes, a solution based on the "Tilt" agent is used. For preventive treatment, it is enough to dissolve 0.3 ml of the substance in a liter of water. For medicinal purposes, the dosage is increased to 0.5 ml.
"Poliram"
To protect against infections, a solution is prepared from Polyram:
- 200 mg of the substance is dissolved in a liter of water.
- Up to 4 sprays with a ready-made solution are carried out per season.
- Discontinue use 3.5 weeks before harvest.
"Shavit"
After treatment, the antifungal agent provides the plant with reliable protection for a long time:
- It is enough to dissolve 200 mg of the substance in a bucket of water.
- During the season, two sprays with a fresh solution are carried out.
- With a strong infection of the grape bush, three treatments are required at intervals of 2.5 weeks.
- The components are highly toxic, therefore, the processing is carried out in protective clothing.
"Paracelsus"
The drug "Paracelsus" copes well with fungal infections:
- has a contact-systemic effect;
- promotes healing of damaged tissues;
- components provide protection for 1.5 months;
- the drug is not toxic to others;
- does not wash off with water.
Thanos
It has a combined effect. After treatment, a protective film is formed on the green part of the plant, which is not washed out by precipitation. Use is stopped one month before harvest.
"Stroby"
For therapeutic and prophylactic purposes, the drug "Strobi" is used, which has an antifungal systemic effect:
- The solution is especially effective against powdery mildew and mildew.
- Two treatments per season are enough to provide grapes with reliable protection against fungus.
- Effectiveness is shown at any stage of the disease.
- Add 2 g of the substance to a bucket of water.
- The components are not toxic to the environment.
- Processing is allowed in any weather.
Soda solution
A soda-based solution is considered safe and effective:
- 55 g of soda and 105 g of crushed laundry soap are added to a bucket of water;
- bushes are sprayed before and after flowering, as well as in the fall, after harvest;
- the folk composition is allowed to be used every week.
Azure water
To obtain an antifungal agent, it is necessary to dissolve 110 g of copper sulfate and 305 g of ammonia in a bucket of water. Vine bushes should be processed up to 6 times per season. The last spraying is carried out 2.5 weeks before the collection of the bunches.
Colloidal sulfur
For prophylactic and therapeutic purposes, a solution based on colloidal sulfur is used:
- To prepare a medicinal solution, add 100 g of the substance to a bucket of water. For preventive spraying, it is enough to take 85 g of the substance.
- Up to 6 sprays are carried out per season.
- To increase efficiency, copper-containing components are added to the solution.
inkstone
With a solution based on ferrous sulfate 1%, it is advisable to process grapes in early spring, before bud break. The solution reduces the risk of infection.
The component protects the plant from late frosts, as it delays bud opening. In autumn, grapes are treated with a 3% solution of ferrous sulfate.
Bordeaux liquid
The tool is able to protect the plant from infections and pests:
- 350 g of copper sulfate and 550 g of slaked lime are dissolved in a bucket of water;
- it is recommended to carry out at least 6 sprays per season;
- the last treatment is done two weeks before harvest.
Which one is better to choose?
To choose the right drug, it is necessary to take into account some conditions:
- type of infection;
- the stage of the disease;
- growing season of grapes.
Grape processing scheme
It is easiest to prevent the appearance of fungal diseases than to fight an infection that has already appeared.
Therefore, it is important to follow the spraying schedule:
- Processing begins in early spring, in mid-March.
- Before the beginning, during flowering and after flowering, the spraying is repeated again.
- Summer processing is carried out if the weather is rainy and cloudy.
Dilution and use of solutions is carried out according to the instructions for use.