How to properly apply the Strobi fungicide for grapes?
Fungicide "Strobi" is a special semi-synthetic preparation, which contains natural toxic substances. Due to their action, the viability of fungal microorganisms parasitizing on grapes, fruit trees, vegetable and berry crops is disrupted. The successful and safe use of this tool depends on how accurately the instructions are followed.
Description of the drug
Strobilurins are toxins with a unique, wide spectrum of action, capable of suppressing the vital activity of four varieties of fungi, and besides, they do not allow the formation of secondary spores. Based on them (in particular, on the basis of betamethoxyacrylic acid obtained from fungal organisms), the main working substance, kresoxim-methyl, was made. The drug is available in the form of granules, they are simply diluted in water and quickly dissolved, further processing is carried out by spraying.
With regard to grapes, the remedy is effective for the treatment of the following diseases:
- scab;
- rubella;
- mildew;
- powdery mildew;
- gray mold;
- tinder fungus;
- different types of rust;
- black spot;
- radical cancer;
- late blight;
- anthracnose;
- stemfiliasis;
- rot.
The agent is able to protect the sheets on both sides and even penetrate the tissues and spread evenly throughout the structure. In this case, the minimum absorption of the drug occurs by the plant, which is especially important.In addition, strobilurins are rapidly destroyed, so they do not accumulate in the soil and soil water, so the environment is not subject to pollution.
Advantages
The universal remedy "Strobi" belongs to a new generation of protective drugs, but has already managed to prove its effectiveness when used in agriculture. The popularity of the drug is due to its many useful qualities and advantages:
- spraying is allowed on dry and wet leaves;
- the protection effect is maintained for one and a half months;
- even partial contact with the plant provides a positive result;
- in fruits, the substance does not accumulate due to the rapid decomposition during the interaction of salts with water;
- active substances are resistant to various types of precipitation and cold weather, so "Strobe" can be used at temperatures down to -3-4 degrees;
- the use of the drug is permissible during the flowering of the crop;
- the diluted composition does not clog the spraying device, as it is completely soluble in water.
In addition, the tool is extremely economical: a small amount of "Strobe" is required to treat large areas (of course, it matters which crop is to be sprayed).
The product should be used immediately after its preparation, since then the drug has the most effective effect. For living organisms - people and animals - the agent is of low toxicity, which, of course, is considered its main advantage, but, on the other hand, this can also be a clear disadvantage. Because of this, some types of fungi are able to mutate; gray rot on greenhouse crops is particularly resistant, as well as powdery mildew on cucumbers and cereals.
How to apply?
The use of fungicide for grapes has its own characteristics. Experts emphasize that it can be used no more than twice per season during the growing season (preferably in spring and summer) and at least 30 days before harvest. As an exception, it is recommended to carry out the treatment before the flowering of the grapes. More frequent and thorough prevention is undesirable, as it can affect the leaves, trunk, soil in the root area and fruit quality. Instructions for use include the following instructions that must be followed:
- to prepare a solution for grapes against diseases such as oidium and mildew, you should take 2 g of "Strobe" per 8 liters; if you need to eliminate a monilial burn, scab or powdery mildew, then 2 g per 10 liters is enough; for other diseases, a ratio of 5 g per 10 liters of warm water is used;
- before processing in the spring, affected, dry, dead and broken branches are cut off from the vines, shoots are removed that can create a shadow and thereby contribute to the development of diseases;
- when spraying leaves, branches and trunks, one should not forget about the soil in which the root system of the plant is located;
- vines are processed twice a week apart.
The prepared solution is in an active state for two hours, so spraying must be carried out during this time. When using other pesticides, you should choose formulations such as Fastak, Delan, BI-58, Cumulus, with which the fungicide is compatible.
Security measures
Although slightly toxic to humans, during work, the following precautions are required:
- the use of a protective (closed) suit, gloves, a respirator and glasses to protect the visual organs;
- the drug should not be near sources of fire;
- for the preparation of the solution, only household containers are used;
- if the composition gets into the eyes, they must be rinsed with clean running water;
- in case of accidental ingestion of the drug, it is better to immediately seek qualified help.
The fungicide must be stored in a place protected from children and not used after the expiration date, which is 5 years.
Recommendations for working with fungicide
The main task of the farmer is the full protection of fruit and vegetable crops. However, when buying "Strobe" you need to know certain subtleties of using this tool. If you use useful tips, you can understand how to use the drug correctly:
- before treatment with a fungicide, it is necessary to pre-spray the plants with another, no less high-quality agent that is not related to strobilurins;
- all work with grown crops should be carried out three days after treatment;
- too frequent use can lead to resistance of pathogens;
- it is better to process crops in the morning or evening, so that a period of time of 6-10 hours is created before the arrival of bees;
- This process is best done in calm weather, when there is no wind.
On average, only three fungicide treatments are required per year, which must be alternated with preparations for pests and diseases. To reduce damage from various diseases, it is occasionally worthwhile to carry out preventive protection.Proper use of such a high-quality fungicide as "Strobi" allows you to constantly maintain grapes and other cultivated plants in a healthy state and annually obtain high-quality crops.
For the timing and rules for treating the vineyard with fungicides, see the following video.