How to cover grapes for the winter?
From time immemorial, the fruits of grapes have been revered and in demand. From ancient times to the present, berries have been used to make wines, juices and various dishes. Today, gardeners have the opportunity to choose among a huge variety of varieties that differ in taste, growing characteristics and other characteristics. In this case, not only care is important, but also the protection of grapes in the cold season.
Peculiarities
Despite the fact that Russia is a northern country, experienced agronomists manage to grow grapes in various regions, regardless of climatic conditions. Plant care includes certain requirements. To protect the grapes from frost, it is necessary to cover them for the winter and take proper care of the plant at this time of the year. There are many different techniques that are used to achieve certain results.
Ways of sheltering grapes are aimed at preserving the root system and vines from frost. Despite the fact that resistant grape varieties are grown in the harsh regions of the country, which are not afraid of low temperatures and other vagaries of the weather, plants need additional protection. Special care is required for table varieties, which can die if not properly cared for.
Training
Summer residents and gardeners with experience who have been growing grapes for many years have a huge range of different devices and types of covering material available. At this stage, you need to stock up on the following:
- straw;
- boards;
- wood boards;
- grid;
- racks;
- mats;
- durable film;
- textile material (burlap);
- spunbond.
The choice of type of protection and covering material depends on the following factors:
- maximum temperature index of frost;
- features of the local climate;
- the length of the period from autumn to spring frosts;
- snow cover thickness;
- precipitation intensity;
- cultivation region.
Before starting work, it is necessary to properly prepare the plant. If you do not comply with agricultural technology, the grapes will deteriorate due to fungal diseases or mold. Also, the culture is often attacked by rodents.
In order for shrubs to survive the cold season, the following work should be done.
- During a dry autumn, it is necessary to carefully and regularly water the plant.
- Phosphorus-potassium and potash top dressing is added to the soil in September.
- Removal of unripened vines is carried out only after the foliage has fallen. Young branches are green in color. In winter, such a vine still freezes, only thick shoots remain.
- It is necessary to organize an additional load, leaving no more than three kidneys in excess of the normal number.
- Shrubs are treated with a solution with the addition of iron or copper sulfate (3%). Various commercial preparations are also used to protect against harmful insects.
- Next, you should deal with the aerial part of the plant, carefully removing the branches from the wire or any other structure.Shoots are connected, forming loose bundles.
- If you use a technique that involves the use of trenches, they must be prepared along with covering material.
Material disinfection
If you plan to use mats, burlap or spunbond as a shelter, they must be properly prepared. The material must be cleaned, dried and treated with an antifungal composition. Until use, it is stored in a dry and dark room.
A solution based on copper sulphate (5-7%) is used for spraying decks made of various materials: wood, mat, and roofing material. You can also use ready-made formulations to protect against pests and the development of bacteria. Everything neatly folds under the canopy until use.
Before covering the plant, the materials used are carefully examined. Rotten products should be destroyed.
In the autumn period, additional covering products are harvested: straw, coniferous spruce branches, foliage and other things. Fallen leaves should be thoroughly dried and treated with antifungal compounds.
To protect the shrub from rodents, special insecticide herbs are used. Various fragrant plants are ideal, including marigolds and marigolds. Together with herbs, dust and other toxic impurities are used.
How to hide?
Experts note that there are several methods for protecting plants during frosts:
- near-stem instillation;
- half-cover;
- complete cover.
Each of the above methods has individual characteristics and is used depending on the task. The plant definitely needs shelter in the first years of life, regardless of the region of cultivation.Seedlings, whose age is from 1 to 2 years, are especially sensitive and susceptible. Also, hybrid, European varieties and those types of grapes that are unstable to temperature changes need mandatory protection.
In the south of the country, the process of sheltering plants begins in the middle of the last autumn month. First, gardeners carry out the process of protecting the root system. The roots begin to freeze gradually at a temperature of 5 to 7 degrees Celsius below zero. As soon as the temperature is set in the range from 0 to 4 ° C, gardeners form a hill of earth around the trunk.
To perform the work, use the soil taken between the rows of plantations. Soil protection is carried out in such a way that the head of the shrub and the lower element of the trunk are completely covered. The optimal height of the embankment varies from 10 to 25 centimeters with a diameter of 30 centimeters. Sizes are selected depending on the age of the plant.
Professionals from the field of horticulture note that the vine of frost-resistant plant species tolerates frosts up to 15 degrees Celsius without any problems. In this case, if the temperature does not fall below the above indicator, it is not necessary to protect the branches. It is enough to save the root system.
The vine is carefully and carefully removed from the supports and laid on the ground. To prevent the branches from touching the soil, use boards, durable fabric, plywood. They can also be placed on the bottom wire of the pole. If there is a decrease in temperature, it is necessary to shelter the entire plant as soon as possible.
In some southern regions of Russia and in the middle lane, the technique of half-covering the plant is actively used. Judging by the name, it is easy to guess that this technique provides for partial protection of the shrub from frost.In this case, only that part of the plant that is closer to the ground is covered.
Due to the fact that cold accumulates mainly in the area of the upper layer of soil, the grapes close the sleeves, the bases of the lower large shoots and the head. If necessary, the remaining parts of the shrub are covered with various materials. They use textiles, protective straw shelters and much more. The minimum layer thickness is 4 cm. The work is carried out as carefully as possible so as not to damage the branches and kidneys.
Other options are also possible. On both sides, the plants dig small trenches. A vine of young plants that has not yet matured is placed in them and covered with a layer of soil no more than 15 centimeters thick. The areas between the rows, from where the land was taken to shelter the grapes, must be carefully dug up, otherwise moisture will begin to accumulate in this area.
If the grapes have a small growth, it can be protected with a heater without removing it from the supports. This method takes a minimum of time and effort.
Ordinary plastic bottles are used as a reliable and budgetary protection for young plants. Most often, transparent containers with a volume of 3 to 5 liters are used. It is enough just to cut off the bottom and stick the lower part into the soil. The bottle is covered with earth, and the cork is removed.
The third method is used in the northern regions with the most severe climate, where in winter the outdoor thermometers fall below 20 degrees Celsius. First of all, you should save the head of the bush. The soil is actively used for work.
The vine is carefully removed from the supports, long branches are collected, tied into a loose bundle and then laid on the ground using pre-prepared plywood, boards or slate.Make sure the branches don't touch the ground.
Experienced summer residents must pin the plant near the ground using special arcs. So the plant will not rise above the ground. After the branches of the shrub are laid, it's time to cover them with covering material. Thick blankets, burlap, mats and other similar materials are used.
It is strongly recommended to use natural products due to better heat retention.
A dense film is pulled over the plant for greater effect. It is fixed with the help of arc-brackets or use the design in the form of the letter "P". To protect the grapes from cold air as much as possible, the ends of the film are sprinkled with soil. Make sure that this covering material does not come into contact with the buds of the bush.
Don't forget about moisture buildup. It is necessary to arrange special gaps so that the branches do not start to sing. During snowy winters, snow is used as an additional insulation. They cover the plant from above, creating a heat-insulating layer.
The subtleties of the process in different regions of the country
Due to the special climate in our country, most summer residents have to protect the plant from long and frosty winters. This procedure is extremely rare in the southern regions. Methods for protecting a fruit plant differ depending on the place of cultivation. For each territory, certain time indicators are established.
Moscow region
If you live within the borders of the middle zone of the country, then plant protection is carried out from the end of autumn to the beginning of winter. The branches of the vine must survive the first drop in temperature when open. This will harden the vine and make it more resistant to frost. It will also give you extra time to ripen.
After the autumn rainy season has come to an end and the weather has settled within 5-8 degrees below zero Celsius, you should leave the plant for several days (3-5 days) and only then cover it for the winter.
Ural
Experts note that the process of growing grapes in this region is complicated. They begin to cover him in mid-November. Despite the fact that in early spring, return cooling is a frequent occurrence, they do not pose a particular danger to the plant. Humidity can destroy it, due to which it is impossible to lay branches directly on the soil. Be sure to use grating, boards and other materials.
Heavy precipitation in the form of snow is used as additional thermal protection.
For young kidneys, direct sunlight is detrimental. The branches are covered with non-woven material and left so even after the frosts recede.
Siberia
Despite the harsh climate in this part of the country, summer residents successfully manage to grow various varieties of grapes. In this region, only frost-resistant and hardened plant species bear fruit abundantly. Gardeners start preparing for wintering from the beginning of September.
In order for the plant to survive the frosty winter without problems and please with a rich harvest, the vine is placed in pre-prepared trenches that are filled with mulch. On top of the plant is protected with wooden shields. In this region, snow plays an important role as a covering material. A minimum of 50 centimeters of snow is poured onto the grapes. It opens only in April, not earlier.
Expert advice
In the event that it is difficult to remove the vine from the supports, you can wrap the branches with protective material immediately on the support. The shelter of the root system is taken care of separately.
Experienced gardeners build special buildings to protect vineyards. Visually, they resemble miniature houses or boxes. This method is very popular in regions with long winters. For construction, a wooden shield, spruce branches and other similar materials are used.
To create optimal temperature conditions inside the building, additional protection is laid on top: boards, slate, mats. With the onset of heat, the building is dismantled, opening the plants to the spring sun. From a rational point of view, it is preferable to use this shelter option to protect low shrubs.
To protect the plant from attacks by rodents, experts advise placing poison baits near the building.
How to open a plant in spring?
The optimal time for opening the plant falls on the period from the end of April (third decade) to the beginning of May. Work should be started only if the warm weather has settled thoroughly. To prevent the formation of condensate, the protective film is removed. Excess moisture can cause swollen buds.
With the advent of fresh sprouts on the bush, all shelters are removed. It is highly recommended to work in the evening. Cloudy weather is also ideal. In this case, young branches will not suffer from sunburn. After wintering, the plant needs to adapt. Organic covering material can be used as top dressing by digging it between the rows of grapes.
The base of the plant is released with the onset of stable heat. The branches are re-placed on supports. During this period, they carefully control the condition of the vine.
To saturate the soil with oxygen for the normal development of the root system, it is necessary to loosen the soil.
For information on how to cover grapes for the winter, see the next video.