Characteristics of the grape variety "Rusbol"
In the distant 1970s, Soviet and Bulgarian breeders set out to develop a new hybrid of the solar berry. The task of scientists was to increase productivity, resistance to frost and reduce susceptibility to disease. About 300 varieties were selected for selection. So "Rusball" was obtained (the second name is "Kishmish Mirage"), the varieties "Super early seedless" and "Villar Blanc" are considered its parents.
Detailed description
A table variety, the harvest time is 115-125 days from the beginning of flowering. A short ripening period and excellent frost tolerance (up to -25 ° C) allow the plant to be cultivated not only in the southern regions, but also much further north: in central Russia and even in Siberia.
It is noteworthy that even if frost damages most of the shoot, the hybrid will recover remarkably due to dormant buds and continue to produce crops.
The Rusbol grapes have yellow-white small berries, weighing only 2-3 grams, with a thin skin. The taste is simple sweet, the pulp is dense. The sugar content is 19 - 21% with an average acid content of 6 g / l. Seeds are present, but soft, in the state of primordia (rudiments). Thanks to this, the variety received another name: Mirage kishmish.
It can be called kishmish only conditionally, since the size of the rudiments is almost equal to the size of the developed seed (therefore, only the IV class of seedlessness was assigned).But, judging by the numerous reviews of experienced growers, the rudiments are not present in the berry every year and can vary in size.
But the clusters are massive, weighing from 400 g, the average weight is about 600 g, and in favorable conditions, giants up to 1.5 kg develop.
With the development of too large inflorescence, it is even recommended to pinch it a little. This will not harm the formation of the brush and will allow you to get larger berries.
The flowers are bisexual, which means that they pollinate each other. They bloom profusely and for a long time, attracting many pollinating insects with a pleasant smell, they can supply pollen in abundance to neighboring grape bushes of other varieties. The vine grows rapidly and produces numerous shoots that are 85 - 95% fruitful, which promises even a beginner a high yield.
You will learn more about the characteristics of the Rusbol grape variety by watching the following video.
cuttings
Bushes propagate both by cuttings and grafting - with both methods, experts note excellent rooting results.
In the case of grafting, one must take into account: the stock must be undersized, a tall one will break under the weight of numerous clusters. If there are no grapes on the site at all, then cuttings are the only way out.
To begin with, a place for planting is chosen: it must be sunny, in the shade the plant will develop poorly. It should be noted that the bush should be evenly lit from all sides. If the sun shines only on one side, the berries on the brush will ripen unevenly. The soil should ideally be light and fertile, but many note that this variety grows on any soil. If the soil is far from perfect, it does not hurt to fertilize it with rotted manure, mixing it with the ground.
It is worth examining the root system of the cutting: if there are rotten and damaged roots, remove them. To improve survival, a seedling can be treated by soaking in solutions of various growth stimulants, vitamins, hydrogen peroxide (a tablespoon per liter of water).
Next, prepare holes for planting: dig a 1 meter wide and about the same depth. Pour crushed stone or broken brick at the bottom - this will be a drainage layer, then - a mixture of earth, mineral fertilizers and humus. The distance between the pits is 2 meters so that the grown bushes do not obscure each other.
Pour a small hill of earth on the fertile layer, stick a support for the plant next to it. Put the cutting on this mound (leaning against a support), straighten the roots and cover with earth. It is good to compact everything, avoiding voids, and pour one or two buckets of water over it.
Features of care
Although the Rusbol variety is recognized as unpretentious, care is still needed. Everything is as usual - watering, fertilizing, pruning, spraying from pests and diseases and, if necessary, sheltering for the winter. None of these actions will require special knowledge.
Watering and feeding
During the first year after planting, cuttings need to be watered quite plentifully. As for the frequency - there are no recommendations, as needed. You can combine watering with the application of liquid fertilizers; during the period of active growth of the vine, it is good to use foliar top dressing. Compliance with these conditions will help the rapid rooting and successful acclimatization of hybrid seedlings. Feeding in large volumes is not carried out during the first two or three years, since there is enough laid down during planting, in the future the dose increases. Mature plants are watered during the period of active growth and when the soil is very dry.
pruning
The Rusbol grape has an important feature: the vine gives too many shoots, on which there are a large number of eyes (and almost all of them are fruitful). If you leave them all, the plant will at best give berries the size of beads. At worst, the bush will break from gravity, and then die. In any case, you can forget about the harvest.
Therefore, timely removal of excess processes is vital. The main work is carried out in the fall - unnecessary branches are simply removed, while leaving about 30 eyes on the whole plant.
It is recommended to leave 6 - 8 eyes per shoot, but even if there are only 2-3 pieces, the grapes will bear fruit.
In the spring, work on the formation of the bush resumes: when there are already 3-5 leaves on the branches, all thickening shoots break out. As the vine develops, all underdeveloped shoots are cut out and with the absence of flowers, the remaining shoots after that grow more actively and develop better. At the end of flowering, all small brushes are removed from the plant, leaving 1-2 pieces to escape.
In summer, the developing clusters are subjected to a small pruning, so a larger size of berries on the brush is achieved. This is the most time-consuming and effort-consuming procedure in all care, otherwise the Rusball hybrid will not require too much attention.
Protection from pests and diseases
Common diseases of all grape varieties are oidium, mildew, various types of rot (white, gray, black), as well as bacterial diseases and viral plant infections. Such damage can deprive the entire crop and lead to the death of plants. When growing the Rusbol variety, these disasters will not overtake even the one who first took up the cultivation of this crop, since the variety is highly resistant to pests and diseases.
Spraying is carried out mainly for prevention purposes. For this, solutions of copper sulfate, hydrogen peroxide, Bordeaux mixture are used.
The only thing that can damage the bushes is rainy weather. It has been noticed that the leaves of the vine turn yellow from dampness, and the berries can crack and then rot.
Should I cover for the winter?
If "Rusball" grows in the southern region, then we are not talking about shelter - on the eve of winter, the plant is not even removed from the trellises. In more severe climates, frost protection is needed, especially when there is little snow. If the height of the snow cover reaches 50 cm or more, additional materials for sheltering the grapes will not be needed, the snow already serves as a good protection for plants. However, the weather in winter has recently been very unpredictable, so you should still make sure.
Since the roots of grapes can be damaged first of all by frost, they begin with the shelter of the root system: the root zone is sprinkled with a layer of humus about 10 cm high. Then the soil and vines are treated with a solution of iron sulfate.
To cover the stems from frost, you can simply tilt them and sprinkle them with earth. There is another way: shoots wrapped in non-woven covering material must be bent to the ground and covered with spruce branches.
It must be remembered that tightness is not needed and even dangerous, air must flow through small holes in the shelter. Otherwise, you can get bulging eyes. In the spring, with the onset of heat, the shelter is removed.
hybrid forms
"Rusball" acted as a parent variety when creating two more grape hybrids.
- "Rusball Improved" (second name - "Elf") appeared as a result of the merger of the base hybrid with Villars Blanc and Rapture.Having the same characteristics as the parent variety, the newly obtained hybrid ripens even earlier - in 105 - 110 days, the berries are larger, and begins to bear fruit already in the second year after planting. Only damp cloudy weather can become an obstacle in obtaining a high yield.
- "Rusball Muscat" - the result of the combination of varieties "Rusball" and "Bulgaria stable". The berries are oval, amber-yellow, have a valuable nutmeg aroma, the rest of the indicators correspond to the parental form of the plant. Among the shortcomings, a decrease in resistance to oidium disease is noted, therefore, appropriate processing of the hybrid is required.
Advantages and disadvantages
Tasting scores compared to other sultanas are not so high: fresh berries - only 7.6 points, dried grapes - 7.8 points. The disadvantages also include:
- low degree of transportability (due to which the variety is recommended for breeding in private farms);
- in rainy weather, the berries can crack, followed by the inevitable decay;
- the need for constant pruning of excess shoots (harvest rationing).
Numerous reviews of gardeners note the following advantages:
- excellent stable yield even in central Russia;
- early ripening;
- high frost resistance;
- excellent self-healing ability after freezing of the kidneys;
- undemanding to the composition of the soil;
- bisexuality of flowers, excellent help in the pollination of neighboring plants of the female type;
- sweet berries to the taste of children, and the rudiments, when dried, give a special flavor to raisins;
- wasps do not damage berries.
All these qualities of Rusbol grapes allow even beginners in viticulture to start growing it.
The unique properties of the plant
Grapes contain a lot of useful minerals and vitamins, which people have known for thousands of years. In addition to eating, people used solar berries as a medicine and various cosmetics.
The substances contained in the plant lower cholesterol, strengthen the walls of blood vessels, improve heart function, protect against the formation of kidney stones, improve metabolism, and so on, not to list everything. Since ancient times, the use of grapes for food has been especially advised for a quick recovery.
As a cosmetic product, berries containing natural antioxidants are actively used both in home and industrial cosmetology: both as part of face masks, and to strengthen hair, and as an ingredient for spa treatments.
Due to the relatively low tasting grades of the grape variety, it is recommended for fresh use and for drying. However, judging by the reviews of experienced housewives, the fruits of this variety can not only be eaten fresh and dried - the berries can be used for cooking:
- compotes, jellies and jams (in combination with lemon, melon, pear, orange peel, walnuts, and so on);
- wines blended with other grape varieties;
- vinegar;
- juice, it is possible with various additives.
A number of excellent characteristics inherent in this variety makes it indispensable for all those who are taking their first steps in viticulture and are afraid of being disappointed. Long-term practice of experienced gardeners shows that this variety will invariably please with a good harvest, while not burdening it with much trouble to care for it.