Pruning grapes: how and why to carry out in the spring, is it necessary to prune in other seasons?
Pruning grapes is an important part of the process of creating a vineyard that will delight you with a large harvest. Regular removal of excess shoots is necessary to control the growth of the vine. It must be done regularly, observing the terms and rules.
Timing
Grapes should be pruned during the period of dormancy and lack of sap flow, usually this is the end of winter. The most common mistake people make is not removing enough shoots.
Light pruning does not contribute to good fruiting. It is important to remove the old branches and allow the new vine to develop.
Depending on the region, the timing of pruning grapes may vary.
The advantages of this approach are:
- the harvest is getting better;
- the frost resistance of the plant improves;
- grapes ripen faster;
- the treated bush is easier to cover.
In autumn, pruning of grapes is necessary when the last leaf has fallen. In most regions where this crop grows, gardeners take up secateurs at the end of October. Experts do not advise using the first frost as a guide.
In spring, the time from the first half of April to the beginning of May is ideal for trimming the vines. It was during this period that sap flow has not yet begun, therefore, minimal damage will be done to the plant.
In summer, shoots are removed from June to August, when the most active growth of side branches can be traced, capable of braiding everything around. Stepchildren pinch off as soon as they begin to appear on the vine.
Kinds
In the cold regions of our country, it is imperative to cover the grapes, thereby protecting them from frost. In this case, pruning is done twice a year: in autumn and spring, and in summer the plant is only corrected.
Since autumn, more shoots are left, so that later you can choose those that have wintered well and are ready to harvest in the new year. In April-May, you can trim the grapes, but before that, check if the shoots that are planned to be left for growth are damaged.
In those regions where there is no need to shelter the plant from frost, the timing of the procedure depends on the physiology of the grape variety. Proteins, sugar and starch are deposited under the bark in the second half of summer. They go to the roots closer to the fall.
Approximately 15 days after the last leaves fall, the movement of starch and other substances inside the grapes stops, and you can begin to remove excess shoots. If this is done earlier, then the juice will begin to leave through the opened “wounds”, the grapes will hurt and may dry out.
If you prune in December, then the plant will give the first leaves four days late from the due date. The removal of branches when the buds are already swollen greatly slows down the blooming of foliage. After such a procedure, the grapes will give greens later for two weeks. This is one of the reasons why, in areas where late frosts are likely, pruning is done in the spring, just before the buds open. So you can save the plant from frost and save the harvest.
In autumn, the grapes are at rest and can be shaped, but you should not do this on frosty days, because then the shoots will be too fragile and split when pruned. There is such a pattern that the later you remove unnecessary branches, the more harvest will be next year, but then the bushes grow more slowly. Gardeners advise pruning grapes when the buds are already beginning to swell if it is intended to deliberately retard the growth of the plant.
It is recommended to remove up to 90% of the shoots on the vine before the start of winter. The central trunk will eventually become covered with bark and become the basis, and it can be launched around the gazebo or around the house.
If you want to plant a plant, then cutting it is worth it just when there is a lot of starch inside, which will help to give roots. Spring is the perfect time for this. It is easy to determine the amount of this substance inside the grape branches - just dip one into an iodine solution, and if it turns black at the cut site, then the shoot is suitable for planting.
In summer, cutting off excess shoots is with extreme caution. This should be done only if there is an urgent need, so that the plant does not spend its reserves on the formation of new branches. This culture is characterized by rapid growth, so gardeners must control its growth.
Summer pruning allows you to adjust the vine, direct it in the right direction. Formation takes place without difficulty for the gardener. By removing excess branches, you can achieve a large harvest. Such a correction does not require the use of garden tools. It is better to prune young shoots by hand, simply pinching them off at the beginning of development.
Tools
Pruning is carried out using only one garden tool - secateurs.It should be not only sharp, but also clean, only in this way the plant will not get sick and will calmly survive the removal of the shoots.
Branches are cut exclusively at right angles to reduce the cut area and speed up the healing process.
The secateurs provide the level of pruning that allows you to cause minimal damage to the plant. It needs to be sharpened well. At the moment of complete closure, the blades leave smooth, not torn edges without a bevel.
You may also need:
- saw with fine teeth;
- wire or twine;
- garden gloves;
- knife.
spring work
The procedure is carried out at a strictly defined time, if the gardener plans to get a quality crop. Spring pruning is practiced mainly in regions where winters are harsh.
Even a professional cannot say the exact date when it is time to remove excess shoots, it all depends on weather conditions. However, there are strict rules to follow:
- the air temperature should not fall below 3 degrees;
- pruning must be done before the start of sap flow.
If the gardener missed the moment, then it is better to remove only dried shoots. This is the only way to save the plant. When forming a young vineyard, all but the strongest vines are removed. On old bushes, they will have to be cut a lot, so only the two strongest shoots are left, one of which is shortened from below by 4 eyes.
Peculiarities
Regardless of the chosen pruning scheme, you must first remove the damaged and frozen branches of the grapes. Shoots should not be too long, 12 buds are enough to form a beautiful bush from them.
If the branch already bore fruit last year, it is worth acting carefully so as not to break it. From the perennial process, the cut is made at a distance of 5-7 mm. Shoots that are located close to an even trunk do not need to be removed, they are stored for the next year.
A shoot suitable for the formation of a vine must be at least 5 mm thick, thick and thin branches must be pruned.
It is worth paying attention to the appearance of a cut of juice at the site. To close the damage, prepare a special paste. To do this, mix boric acid, red lead paint and chalk powder. The mineral complex will help support the plant in the spring after pruning.
Determine the number of buds left for fruiting on last year's branches. Count their number and examine the processes in diameter, length and quality.
If they are ideal in size and suitable for further fruiting, it is worth leaving the same number of buds for development. If the gardener is inexperienced and does not know how many shoots to cut, it is better to remove more than to leave unnecessary ones. If the vine is weak, do not additionally burden it with a large number of buds and branches.
Pros and cons
Pruning in the spring has its advantages:
- protection against frost shoots;
- increase in productivity;
- improvement of the presentation and taste of fruits;
- better shoot lighting.
Among the disadvantages, dehydration of the plant through open sections can be distinguished.
Rules
Do not rush with pruning, as an early procedure can lead to frostbite of the bush. No less attention is paid to the quality of garden tools, which must be disinfected so that fungus and bacteria, as well as pest larvae, do not get into the cut.
Basic Rules:
- remove all affected and dried branches;
- the tool should not make torn cuts;
- fruiting vine must be at least 6 mm in diameter.
Ways
There are two technologies by which spring pruning of grapes is performed. The description step by step allows even a novice gardener to disassemble the scheme in detail and correctly cut the vine.
Technology can be:
- standard;
- stemless.
Stemless is used when growing crop bushes that do not need to be covered for the winter. The gardener begins to form the vine from the first spring and bends it to the ground.
In the first year, if there is one shoot, it is cut off by no more than four eyes. If there are two branches, then two. The upper old trunk is completely removed.
In the second year, the resulting shoots are not touched, and the processes are removed by 2 buds. For the 3rd year, only two vines from each perennial branch remain on the bush, which should be close to the root. Taking into account the diameter of the processes, the upper one is shortened by 7-15 buds, and the lower one by only two.
Young grapes with good racemes can also be formed with standard pruning, which is ideal for a plant that does not need to be covered during the frost period.
In the first year, there is no need to leave shoots, but this does not mean that they need to be removed completely, but only for two eyes each.
By the second year, they look at which of them develop best and leave only two. On one, only two buds are kept, and on the second, a branch is cut into three eyes. Already in the summer, it will be necessary to tie the future grape stem to a support.
A bush launched and not cut in time will not produce many fruits, therefore, by the third year, all shoots are cut so that their length is equal to the height of the central trunk.The rest of the vine should be removed, leaving only two shoots on top, which are reduced by two buds.
The formation does not end there. In the fourth year, the upper central vines will need to be removed. Between them there should be a distance without branches of 20 centimeters or more. All shoots that have formed by the fifth year are cut so that only 3 eyes remain on them.
And only by the sixth year the gardener begins to form a fruit branch.
The lower vine should be cut as short as possible, and the upper one - only 8 eyes.
What to look for when choosing the main terminal vines:
- young and healthy wood;
- each should have about 15 buds;
- look for a vine going in the right direction.
If it turns out that there is no healthy vine branch going in the right direction, it is quite easy to redirect the young vine. Gently move it and tie it to the support. As the bush grows, the tendrils will hook onto the base and support the branch in its new position.
Common Mistakes
Poor quality, poor pruning is the first reason that the berries are not only small, but also tasteless. The purpose of pruning is to achieve a vine that grows only the right number of branches. Grapes on a well-formed plant ripen faster because they receive enough light and nutrients.
Too much shade from vigorous leaf growth prevents the plant from producing enough grapes, resulting in poorer quality fruit. It is necessary to cut the vine about 4-8 buds below the fruit branch, which should be at least as thick as a standard pencil.
This is one of the most common mistakes novice gardeners make. They seem to be afraid to leave the vine without branches, thereby only harming the future harvest. Removing 50 to 90% of the shoots is normal, so the fruit clusters will get moisture, and the grapes will be sweet enough.
Poor quality, poor pruning becomes the first reason that the berries are not only small, but also tasteless.
Further care
In the spring, when all living organisms wake up, it's time to use an additional system to protect the vine from pests. We are talking about processing, the main purpose of which is to prevent infection by insects and diseases.
The first spraying occurs at the beginning of April, when the vine rises to the trellis. Gardeners use fungicides that can cope with fungi. They affect not only the grapes, but also the soil around it, because there may be harmful spores. Particular attention should be paid to the forks and bends of the plant, where bacteria accumulate.
The second time the grapes are sprayed in mid-April, when insects begin to wake up. If the insecticide is not used on time, the pests will damage the kidneys, respectively, the yield will be low.
The last spring treatment begins after the plant has stopped flowering. This happens at the end of May. For this, a mixture of insecticide and fungicide is used.
Grapes also need top dressing, since it helps to develop fruits faster and get all the necessary elements from the soil for the ripening of the crop. Fertilizer must be applied before mid-summer. Late use may result in additional shoots growing when the plant should be dormant.Late activity can weaken the vine's ability to survive the winter and affect its growth the following year. Grapes planted in balanced soil need not be fed.
Ready-made fertilizers are a combination of nitrogen (N), phosphorus (P), potassium (K) and other equally important auxiliary microelements. The N-P-K label indicates that the product contains 24% nitrogen, 8% phosphorus, 16% potassium and 52% micronutrients.
Grapes prefer a well-balanced fertilizer, which is not difficult to obtain in the store. Look for the inscription on the package "10-10-10" or "15-15-15". Fertilizers can be applied in liquid and dry form.
Recommendations
Pruning is used for varieties with low natural fecundity on basal branches. It requires the annual replacement of one-year-old branches, on which the buds produce shoots, where the current year's crop is formed.
The first step is to identify fruit vines for next year. It's worth looking for branches that are round, well matured and developed, on top of the top of the vine. This is the best option as these shoots get enough light during the growing season.
Pruning requires a high level of knowledge and is time consuming. The gardener must be able to judge the quality of the vine to determine whether it will produce enough fruit for him next year. Despite all the complexity, if the procedure is carried out correctly, then it will not be difficult to evaluate how many benefits such work gives. Frost protection and increased grape production are not the only benefits of pruning.
Climate and soil fertility largely determine the rate at which the vine will grow. Every year the pruning job gets easier. There are a few additional points that beginner gardeners should be aware of:
- If you do not disinfect, then at least sterilize the tools after working on each vine. It is best to use a solution of isopropyl alcohol for this.
- Remove any diseased branches.
- The cuts should be made at least one centimeter above the bud and at about a 45 degree angle.
- You can not cut the shoots at the same level, this will lead to the death of one of them.
- Try to remove those branches that grow inside, and leave the outer ones.
- Tie the shoots loosely to the trellis.
The secret to success: The vines produce fruit on year-old wood. This means that in the spring, when additional shoots begin to form on the main branch, it itself begins to become covered with bark.
In the second year, the main goal is to achieve a balanced vine that has just the right amount of shoots. Too much of their accumulation gives a lot of shade, and she, in turn, does not allow the fruits to receive enough light, respectively, and the yield drops.
To determine which branches will no longer be able to produce a crop, that is, they are dead, it is enough to look at their color. From light gray to black, the shoots are already dried up or dying, which need to be cut off so that the plant does not experience additional stress. Healthy ones are usually red to brown.
Sometimes it is worth leaving a few branches from last year, especially if the plant is still young and just forming its vine. Standard pruning is used for varieties that show high fecundity. This is the most efficient and popular method. Grapes such as Cabernet Sauvignon and Merlot are the most commonly pruned.
To start the procedure, you need to select the strongest stem of the vine, then use a pruner to remove all nearby branches at the base of the plant as close to the trunk as possible. The rest, which will serve as the basis, will need to be fixed with wire or twine.
Removing extra branches in the first year is not a good idea. If nothing is done, the grapes will be able to strengthen the root system, subsequently pruning will bring him less harm. It is better to start the procedure in the middle of summer of the second year. During this period, it is necessary to cut off the upper part of the main trunk just when the vine has reached the desired height. This process is called tip pruning and allows new and healthy branches to grow along the vine.
Pruning is an important task that a gardener must learn to perform. It is worth remembering that the more shoots, the denser the branches, and this, in turn, does not allow enough light and space for the grapes to grow. Pruning is an important task that the gardener must learn to perform.
It is worth remembering that the more shoots, the denser the branches, and this, in turn, does not allow the grapes to be given enough light and space to grow.
You will learn more about the process of pruning grapes from the following video.