How to grow Laura grapes?
One of the most common varieties of garden grapes is the Laura hybrid. Its fruits are distinguished by an exquisite harmonious taste, and besides, they have an attractive appearance, therefore they are grown everywhere not only for their families, but also for sale. By the way, this variety is highly valued among winemakers who know it under the name "Flora".
Characteristic
Grape variety "Laura" was artificially bred by breeders at the Odessa Scientific Institute. Tairov as a result of mixing 4 parental materials. To do this, the species "Muscat de Saint-Valier" was pollinated with pollen of several types: "Muscat of Hamburg" and "Hussein", and the resulting variety was later crossed with "Queen Tairovskaya". The new species was officially registered as "Flora", but its shortened version, "Laura", took root among the people.
The variety combines all the best parental features: exceptional taste, resistance to most fungal infections and good transportability.
The vine bushes grow fast and grow strongly, they have a flexible trunk and very rough vegetation. The leaf plate is quite large, has five lobes, the color of which varies from pale shades of green to a rich emerald color. The edges are pointed, strongly serrated, the upper layer of the leaf plate is smooth. The bushes have a rather high degree of foliage.
The shape of the bunch is conical, their length can reach 40 cm, and the weight varies from 1 to 2.5 kg.
A characteristic varietal feature of Laura grapes is the ability to form different clusters on the same bush, identical in size and weight, at the same time, if the load on the bush is increased, then the brushes can significantly lose weight.
Ripe berries are quite large, each of them weighs from 6 to 12 g, and the length is 3-4 cm. The fruits are oval in shape and have a pleasant light green hue with a slight wax coating. The berries sit firmly on the stalk and after ripening do not fall off for a long time - this is especially convenient in the conditions of a summer cottage, when it is not possible to harvest immediately as it ripens.
Each fruit has 2-3 grains, the pulp is quite dense, juicy and slightly crunchy.
The peel is strong, so the berries tolerate transportation and storage well.
Some gardeners feed Laura grapes with gibberellin - in this case, seedless fruits can be achieved.
It is believed that the taste characteristics of this grape are among the best - they are distinguished by a combination of notes of nutmeg with a slight sourness. As a rule, berries contain from 20% sugar, however, this figure can be reduced in situations where ripening took place in cold and rainy weather.
Grapes of this variety are early ripe - fruiting begins already 110-115 days after flowering, although this period may be longer or shorter depending on weather conditions, the age of the bushes and the degree of load on them.When 15-20 bunches are tied on the bushes, you can enjoy juicy fruits already in mid-August, and if 40-50 bunches are formed, then ripening occurs much later. At the same time, the total yield depends on the number of ovaries - large clusters with huge berries usually catch up in weight with fruits obtained from small clusters, but formed in a fairly large amount.
Experts recommend keeping the number of clusters under control - it would be optimal to leave no more than 25 for each bush.
The plant begins to bear fruit in the second year after grafting or planting by cuttings. Shoots grow quite actively and quickly, yielding at least 80% of them.
Variety "Laura" needs to be pollinated by hand, since all the flowers are female. Thus, planning a future harvest is much easier than in the case of self-pollinated varieties.
Pros and cons
Variety "Laura", like any other, has both its advantages and disadvantages.
Among the advantages are the following:
- high sugar content of berries - more than 20%;
- average level of acidity - 6-8 g / l;
- resistance to storage and transportation;
- clusters can be kept on the bushes for quite a long time, without drying out and without crumbling;
- resistance to most fungal infections, including gray rot;
- with excessive precipitation, the berries do not crack;
- bushes withstand winter frosts down to -25 degrees;
- the plant is unpretentious in care;
- fruits are distinguished by exceptionally high taste properties.
Grapes "Lora" can be used both for raw use and for the preparation of winter preparations - good jams and confitures are obtained from the berries, which are sometimes used for sweet pastries.Many winemakers prefer this variety when making homemade dessert wines.
In addition, the grapes of this variety are distinguished by the aesthetics and attractiveness of the vine, so many landscape design experts recommend it for decorating arches, arbors and fences.
Laura has few shortcomings, but they should not be overlooked, because each of them can be overcome. Often the taste properties of grapes deteriorate, the berries become more acidic than usual. In this case, the reason most often lies in the strong growth of the variety, as well as cold weather with heavy rainfall. To avoid such troubles, you should monitor the number of clusters and reduce them to the normatively accepted number.
The second drawback is associated with the susceptibility of grapes to mildew damage - the plant has practically no immunity to this disease.
In addition, the Laura grape is characterized by excessive shoot growth, therefore it needs constant pruning - this complicates the care of the bush. And one more minus - this is the great popularity of grape flowers among wasps - stinging insects can bring significant discomfort to rest in the country or homestead.
Landing
Variety Laura belongs to the hybrid, therefore, it has good resistance to any climate. Most often it is grown in the south, but in the northern regions it takes root quite well in the presence of sufficient light and heat, since with a lack of bright days, the berries may not ripen.
In the southern territories, sowing is carried out from October to March, but in the central and northern territories, it is more expedient to plant in the spring, when the average daily air temperature exceeds the mark of 12-15 degrees, and the soil warming level will be at least 10 degrees.
The site where seedlings are planned to be planted should be located in a well-lit place away from houses and other buildings that create shade. Also, it should not be blown, because grapes do not like drafts.
As for the soil, the most optimal for grapes will be black soil or sandy loam. On clay soils, as well as in areas oversaturated with salts, the plant will develop rather poorly.
It is desirable that the landing site is located on a hill, it should not be located near groundwater. If the plant is planted on the slopes, then it is desirable that it be located on the south side.
Before planting, holes should be prepared, they are dug in increments of 1-1.5 meters from each other, while if the bushes are planted near the walls of houses or a fence, then about 50 cm should be retreated from them, and a passage of 2 meters should be left between the rows.
It is necessary to spread the fertilizer in the prepared pits, it is advisable to use a ready-made complex fertilizer and water it for 10-15 days so that the earth is saturated with minerals.
The day before planting, the seedlings should be placed in water, after a day they cut their roots a little, leaving only the strongest ones, after which they proceed directly to planting work.
The seedlings are lowered into the prepared hole at a slight angle, then all the roots are very carefully straightened with their hands and carefully sprinkled with earth. Near the shoot, the soil should be compacted and watered.Sometimes after this the soil settles - in this case, the shoot should be sprinkled with earth again.
Care
Grape variety "Laura" is quite unpretentious, however, it needs care. If you want to harvest a large crop of sweet berries, then you should regularly feed the plant, trim branches, water, mulch the soil, etc.
The plant responds well to moisture, so it needs regular watering. Seedlings grown along the wall are especially in need of drinking. Water is poured into special drainage recesses, which are forged according to the diameter of the plant's root system. It does not make sense to water under the trunk, since the roots in this place are unable to absorb water.
In order for the soil to better hold moisture, organic fertilizers are used, for example, experienced gardeners recommend making stubborn compost with a layer of 3 cm.
This should be done in spring and autumn. In the hot season, such events can create a greenhouse effect, which leads to decay of the root system.
For the winter, the plant should be covered, so it will be saved from adverse weather conditions. If the bush is young, just planted, then you can simply sprinkle it with soil, and older plants are covered using hay or mulch.
Pruning is another essential element of plant care. In the first year of development, it is not produced, but as soon as the grapes begin to bear fruit, pruning should be done every autumn, otherwise the young shoots will freeze in the winter. In addition, you should get rid of shrunken branches and those parts that have ceased to form clusters in time.
It is very important to observe moderation: if you overdo it with pruning, then the bush may completely stop growing, at the same time, if you leave too many young stems, then all the strength of the plants will go into the growth of green mass and the number of fruits and their size will decrease, and moreover, maybe even a gap for one year.
Special attention should be paid to pest control. As already mentioned, Laura grapes are susceptible to mulch diseases, therefore, at the first signs of the disease, the plant should be treated with Bordeaux liquid. Older bushes are often affected by autumn stump. Such bushes should not be left, it is better to dig them up and burn them, and sterilize the soil, otherwise there is a high probability of re-infection.
Reproduction methods
Reproduction of grapes of the Laura variety is carried out in two main ways - by grafting or cuttings.
To form a seedling, you should grow a root system on the vine. To do this, the layers, located next to the main bush, are bent to the ground, deepened to a distance of 15-25 cm and sprinkled with earth. As soon as the cutting gives strong roots, it can be separated from the bush and transplanted to a permanent place.
There is an even simpler way - cut off the young shoot and place it in a bottle of water. As soon as it gives roots, plant it in a peat pot with earth and strengthen it in order to plant it in open ground before winter.
If the vineyard is old, then reproduction through grafting is most often used. It is no secret that the yield of old bushes is low. Such plants often get sick and need to be replaced. In this case, a young offshoot of a strong bush is grafted onto the trunk of old grapes.The scion is prepared as follows: after wintering in a dark and cool place, the cuttings should be brought to room temperature for several hours. Then, for about 1-1.5 hours, they are immersed in warm (but not hot) water, and right before being laid in the crevice, they are dipped into the Humat solution.
Cooking a stock is easy, but you need to do it with care, otherwise you can seriously damage the bush. The stamp is split and divided in half with a knife, and then prepared seedlings are inserted to the right and left of it.
The offspring should be cut to the level of the lower kidney and covered with paraffin, which will retain the necessary moisture.
The grafting site should be wrapped with cotton cloth, tightly tightened and soaked with garden pitch, and then protected with a layer of soil or sawdust.
Diseases and pests
Many gardeners are sure that modern hybrid varieties are resistant to most fungal, viral and bacterial plant infections, which is why they prefer such species as Laura, Talisman, Delight, Arcadia and others artificially bred.
Unfortunately, this is just a misconception. Plants are immune, they resist longer and heal faster, but any signs of damage to plants should be taken immediately, otherwise there is a high risk of losing the entire crop.
The most dangerous pests of vineyards came to our country from Latin American countries, and relatively recently.
Let us dwell in more detail on the signs of damage to garden grapes and methods for their treatment.
Mildew - this problem is also known as downy mildew, it affects all green parts of the plant - stems, leaves, shoots and even berries.Most often, this fungus is the result of prolonged rains or growing bushes in the shade. The leaves are the first to be affected - oily spots 3-4 cm in size appear on them. They appear on the teeth and rather quickly spread over the entire surface of the leaf plate. A whitish coating forms on the back side, which easily disappears if you run your hand over it - these are fungal spores. Infection begins with the apical leaves, after which it spreads to clusters and young shoots. If the fungus gets on the berries, then a gray coating appears on them, and then bluish spots, after which the berries quickly rot.
Infection usually occurs in the autumn, the fungus "winters" inside the plant, and in the spring, when the soil warms up and the rains begin, the infection develops rapidly.
In order to protect the grapes, preventive measures should be observed, namely: remove and burn all damaged shoots, collect fallen leaves and berries.
7-10 days before flowering, grapes can be sprayed with a solution of topaz and ridomil with the addition of urea or immunocytophyte. The preparations are diluted strictly in accordance with the instructions.
Two weeks after the first treatment, the grapes should be re-sprayed with quadris with the addition of the above components.
But this is not a cure, but a prevention of the disease. If the bush is infected, then a similar treatment should be carried out immediately at intervals of 10-14 days. At the same time, the time of the last spraying should not be later than 3 weeks before fruit ripening.
Oidium is another fungal disease that affects the stems and leaves of the plant.A symptom of infection is the appearance of a white coating: first in some places, but gradually the surface is completely covered, and after a while the plaque acquires a gray tint.
Infection can occur from old diseased branches, but spores of the fungus can also be brought by the wind. Then even a very young plant can get sick. Oidium also affects the fruits - first, a small depression appears on the berries, which gradually cracks. The fruit dries up to seeds and remains on the bunch without crumbling.
Hot summer days contribute to outbreaks of this disease, since the fungus is most active at temperatures above 25 degrees.
Disease prevention measures include careful treatment of the bushes after harvesting with DNOC, as well as spraying the first petals in the spring with Topaz, Vectra or Strobi. It is recommended to add special colloidal sulfur to them.
The use of Bordeaux liquid does not make sense - the pathogen is immune to this popular drug.
Phylloxera is one of the most dangerous pests of Laura grapes. In simple terms, this is an aphid - a small insect with a sucking proboscis. The danger of these beetles lies in the fact that they are able to reproduce without fertilization, so even one female in one season can create a real colony of parasites, which, with the onset of spring heat, will begin to suck out all the vital juices from the plant and at the same time continue to actively multiply.
The first symptom that the plant is infected may be the cohesion of the bushes at temperatures above 20 degrees, which has no apparent reason - the growths are reduced, the berries and clusters become small, and after a couple of years the bush dies altogether.In such a situation, you should examine the roots, and if you find yellow-lemon-colored insects with dark dots on them, then you are dealing with phylloxera. The size of an adult is 1-1.2 mm, and the larva does not even reach 0.5 mm.
Fight this pest in several ways. With the help of fungicidal preparations, 3-4 injections are made to the bush in the root area. The most commonly used is hexachlorobutadiene.
In some regions, growers used the flooding of vineyards in the autumn by 15-20 cm for a period of 1-1.5 months. At the same time, the pests completely suffocated, but this method turned out to be quite expensive and did not guarantee that the plants would survive.
To reduce the risk of aphids infestation, before planting a bush, add up to a third of sand to the soil, this insect does not like sandy soils.
Grape itch is a tick, the impact of which on grapes is unpredictable - it can take root alone on a bush, or it can settle in a colony. In the first case, there will be no harm from it, but in the second, more than half of the crop can be lost, since the tick feeds on stamens and a young ovary.
The lesion manifests itself in the form of reddish swellings on the outer side of the leaf, which look like whitish depressions from below. Picking off the leaves will have no effect, as the mite lays its eggs in healthy leaves. To help the plant, you should use drugs such as "Match", "Antiklesch" or "Arrivo" with the addition of garden sulfur.
To prevent the reproduction of the pest, you should pinch the tops of the shoots in the fall, since it is there that he arranges his nests.
Anthracnose is a fungal infection that affects green young shoots.At the same time, gray spots appear on the surface of the stems, which grow rather quickly and become woody, leaving holes in the center. At the same time, the ovaries completely dry out, nullifying all hopes of harvesting a good harvest of grapes.
To combat this disease, Bordeaux mixture is used, plants are sprayed with it with the onset of spring heat, and Flatan or copper oxychloride is also used.
Bacterial cancer is an infection that is most often transmitted with diseased seedlings, so it is extremely important to inspect the roots and boles of the plant when buying planting material. If you notice tumors or thickenings at the place of adhesion of the stock and scion, then you should refuse to buy such a bush - it will not only die itself, but also infect the ground, transmitting the infection to other plants.
This cancer is not cured, the only thing that science offers is to delay the death of the plant by 2-3 years. To do this, all affected shoots should be cut off and the cut points should be treated with kerosene.
Some viral diseases, which include mosaic, short knot, leaf curl, pose a great danger to grapes - unfortunately, there are no effective measures to treat such problems yet.
Grapes attract rodents that can harm plantings. To avoid intruders, it is necessary to surround the vines with pieces of burnt felt or wool, as well as scare away rats and mice with any unpleasant odors.
Recommendations
Most experienced gardeners unanimously note the flexible attitude of Laura grapes to care. If you properly care for the crop, then even under the most unfavorable external conditions, you can easily get a good harvest of juicy and tasty berries.
The feedback from winegrowers on Laura is extremely positive: it responds to compliance with the requirements of agricultural technology and the regular application of the necessary fertilizers. A plentiful and, most importantly, stable harvest makes Laura one of the most favorite varieties for commercial and home cultivation - this species has been in the TOP-5 in cultivation for several years, as it has the most favorable ratio of the strength of the plant itself and its yield.
Consumer reviews unequivocally testify to the resistance of the hybrid to the climatic features of the climate of central Russia.
The attractive and aesthetic appearance of the bunches and the resistance to transportation and storage make it possible to supply fresh berries to the points of sale without any loss in their quality.
The optimal combination of acidity and sugar content of grape berries attracts winemakers - the most excellent wines are always obtained from juicy and delicate fruits.
Comparison of grape varieties "Laura" and "Arcadia", see the following video.