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The reality is that without preventive and therapeutic treatments for cultivated plants, it will not be possible to obtain a normal harvest. Almost all plants, trees and shrubs must be sprayed with special means to protect them from pathogenic bacteria and microorganisms. Today, one of the most popular broad-spectrum drugs in Our Country is Chorus, an aminopyrimidine that can not only prevent infections, but also successfully treat them at different stages. This tool has a lot of advantages, but the gardener must also be aware of the shortcomings of Horus in order to successfully use it on his site.
The composition of the preparation will be described below, instructions for the use of Horus for fruit trees and shrubs are given. In the article you can also find information about the dosage of Chorus and the compatibility of the drug with other treatments.
Chemical composition and principle of action
Chorus is a broad spectrum fungicide. This drug was developed by the Swiss company Syngenta and presented as a powerful antifungal agent. The active ingredient here is the organic compound cyprodinil. The composition of the drug is as follows: a liter of Horus contains 0,75 liters of the active ingredient.
The principle of action of the fungicide is based on the penetration of the active substance into fungal cells and inhibition of the synthesis of amino acids. As a result of exposure, the vital activity of harmful microorganisms is disrupted, and the mycelium is completely destroyed.
The developers of the drug note its amazing ability to destroy pathogens of several classes when they are in a dormant state. That is, the most effective treatment of plants with Horus in the early spring. A systemic remedy, that is, it can not only prevent the disease, but also cure it.
The drug Horus is produced in the form of small granules that can be easily dissolved in water. On sale there are bags with a fungicide weighing one, three and fifteen grams, there are also kilogram packaging for large farmers and industrial gardens.
The spectrum of action
Most often, Horus is used for gardening and processing fruit trees, berry bushes, strawberries, strawberries. Unlike other similar fungicides, the Swiss preparation effectively and very quickly destroys pathogenic fungi.
Horus is effective in cases where the disease of fruit trees or other plants is caused by this series of infections:
- scab;
- powdery mildew;
- clasterosporium disease;
- moniliosis of stone fruit crops;
- fruit rot;
- gray rot;
- white and brown spotting;
- mildew;
- curly leaves;
- Alternaria;
- oidium
Advantages and disadvantages
The use of Horus in horticulture avoids a number of problems. Chorus fungicide should be chosen for treating plants in the garden for a number of reasons:
- the active substance penetrates the leaf plate very quickly – within three hours;
- you can use the fungicide even at low temperatures – from +3 degrees, which allows you to destroy the mycelium in the wintering stage;
- suitability for late processing of fruits, which reduces the risk of infection of the harvested crop with rot by 50%;
- lack of phytotoxicity;
- compatibility with other antifungal agents, pesticides and insecticides;
- economical use of an expensive tool;
- weak absorption into the soil, non-spread of Horus into groundwater;
- convenient packaging;
- a wide range of activities.
Unfortunately, there is still no ideal drug that does not have drawbacks. Horus is no exception, this fungicide has its drawbacks:
- the product is not able to penetrate the thick epidermis, therefore it is not suitable for processing adult trees and shrubs – it is recommended to spray young plants with Horus, at the very beginning of their growing season;
- the action of the fungicide is local, that is, the substance does not penetrate into all parts of the plant;
- the drug is most effective at average air temperatures – from +3 to +25 degrees. Extreme heat, like cold, significantly reduces the effectiveness of Horus.
Preparation of the solution
Since Horus granules are water-dispersible, they are easy to dissolve in water and prepare a solution in the desired proportion. It is necessary to prepare a fungicide solution immediately before processing – it is impossible to store the finished product.
The preparation is very simple:
- Wash the spray container with clean water.
- Fill the container with water one third.
- According to the instructions, calculate the dosage of Horus and pour out the required amount of granules.
- Thoroughly stir the resulting composition.
- After that, just add the rest of the water. Stir again.
The consumption rate of Horus is 1 cubic meter per hectare of gardens. These are approximate figures recommended for industrial scale. A more accurate dosage should be calculated taking into account the type of plants, treatment time and crown size.
Opened bags are not stored for long, as the fungicide granules actively absorb moisture from the air. Unopened containers with Horus are stored for up to three years in a dark place where children and pets cannot reach, at temperatures from -10 to +35 degrees.
Dosage calculation
The rate of consumption of Horus also depends on the type of plant and the disease to which it has undergone. Most often, this fungicide is used to treat pome and stone fruit crops.
Molonial scorch and leaf curl in stone fruit trees should be treated with a solution with this concentration: 2 grams of Chorus per 10 liters of water. The first spraying of trees is carried out in the phase of rose buds, again – after two weeks.
Clasterosporiosis, coccomycosis, fruit rot eliminate with a more concentrated composition: 2 grams of fungicide per 5 liters of water. The first treatment of fruit can be carried out in the “green cone” stage, subsequent spraying with an interval of 15 days.
Pome fruit trees (apple, pear) are treated with Horus for fruit rot, scab, alternariosis. To do this, 2 grams of the fungicide is dissolved in 10 liters of water and the trees are sprayed twice: during the period of bud swelling and after 15 days.
How to use the product for various plants
Instructions for using Horus are usually given on the packaging of the fungicide. As practice shows, for each young fruit tree you will have to spend from two to four liters of the finished solution. Due to the water dispersion of the product, it dries quickly and covers all parts of the plant with a thin film. After a couple of hours, you can not be afraid of rain, since the active substance of Horus has penetrated inside.
For apple and pear trees
Pome fruit crops are recommended to be treated with Horus in order to prevent scab, powdery mildew, monilial burn and alternariosis. Spraying is carried out twice: at the stage of bud break (“along the green cone”) and, somewhere, on the tenth day after the end of flowering trees.
The consumption of fungicide in this case is 10 liters per 100 squares of the garden.
For cherries, peaches, apricots, sweet cherries, plums
For the treatment and prevention of infection of stone fruit crops (for example, for peach) with monilial burn, treatment with Horus must be performed before flowering, and re-spraying is carried out after a week.
Fruit rot can be treated as soon as the first symptoms of the disease appear. Spraying fruits with fungicide is repeated at intervals of two weeks so that the last treatment takes place no later than 15 days before harvest.
Coccomycosis and clasterosporiasis are treated with a double treatment: at the initial manifestations of the disease and 10 days after the first exposure to the drug.
Grape processing
Horus is also effective for grapes. With the help of a fungicide, this culture is treated for gray rot and downy mildew. Leaves and vines should be treated three times during the growing season: at the stage of budding, during the formation of clusters, during the ripening of grapes.
Spraying strawberries and strawberries
Horus also helps with diseases of berries, such as strawberries and strawberries. The fungicide is effective in case of infection of plants with white and brown spot, powdery mildew, gray rot.
Berry crops are sprayed three times per season, while the concentration of the fungicide is different all the time. Before flowering and immediately after picking the berries, strawberries are treated with a solution of 6 grams of Horus and 10 liters of water. During the formation of ovaries, the concentration should be halved: 3 grams of fungicide per 10 liters. For a strawberry plot of 100 m2 consumes about five liters of the working composition.
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Conclusion
Horus is an effective and popular fungicide. The drug has earned love among gardeners due to the possibility of early use, a wide spectrum of action and economical consumption.
Reviews about this fungicide are only positive, the only drawback identified by domestic gardeners is the rapid disappearance of the drug from the shelves. It is better to buy Horus in advance, without waiting for spring!