Black finger grapes or the largest seedless variety

The popularity of amateur viticulture is growing every year. Everyone who grows this crop on their plots tries to keep track of all the new products that breeders offer. Sometimes the advantages and disadvantages of a variety or hybrid forms have to be identified experimentally when the plant is purchased and planted on the site. Let's try to figure out why the black finger grape variety is good, its main advantages and disadvantages.

Content:

• Black finger grapes or black finger, variety description
• How to plant black finger grapes
• Some features of growing Black finger grapes

Black finger grapes or black finger, variety description

Taking into account the fact that winegrowers have always valued seedless forms of grapes, the appearance of each new variety arouses interest among lovers of this crop. This fully affected the hybrid form of grapes called Black finger or black finger. This hybrid form has gained a reputation as the largest seedless variety.

The size of the berries is 2.6 cm, their weight is impressive, it reaches 12 - 14 grams. For comparison, the largest seedless grape, white sultana, which, like the black finger, was tested by Chilean winegrowers, has a berry weight of about 4 g. The authorship of the breeding of the variety belongs to the Israeli research institution Volcani Center.Today it is one of the leading organizations in developing and testing new varieties of agricultural crops.

Seedless variety black finger belongs to the latest varieties from the group of seedless varieties. Ripening time is about 145 days. In order to obtain an economically viable harvest, the harvest of which begins in early October, it is recommended to grow it in the southern regions with a sufficient number of warm and sunny days. The bushes are tall, the clusters are large.

The color of the berries is black, the shape is rounded - oval, the skin is medium thick, the flesh is elastic and aromatic. The taste is good, the taste is harmonious, sugar content is up to 20%, acidity is up to 7 g/l. The main advantage of the variety is the size of the berries and the absence of seeds. These are the varieties that are in demand today on the European and American grape markets and their prices remain at a fairly high level.

Disadvantages include poor resistance to some fungal infections. In addition, you can get large seedless berries if, when the berries reach a size of 0.5 cm, you treat the bunches with a solution of gibberellin. This technique will be discussed in more detail below.

How to plant black finger grapes

An important point in planting black finger grapes is the acquisition of planting material. Due to the fact that the variety is patented by the Israeli center, the seedlings are sold under its license. Therefore, you can trust those sellers seedlingswho have such a document. Otherwise, under the guise of a black finger, you can buy a similar variety from breeder A.P. Tereshchenko called Alyonushka. These varieties are united by their dark color and large berry size.

The difference between them is that the black finger does not have seeds, but in Alyonushka there are seeds, although in small quantities. The area for planting grapes should be oriented south and well protected from the wind.

To do this, you may have to build a solid fence up to 2.0 m high. If there is a close occurrence of groundwater in the area, then high ridges will need to be made before planting. The best time for planting is spring. If there are 1 - 2 seedlings, then prepare planting holes. If there are a large number of bushes, you need to dig a planting trench. When planting grapes, be sure to:

• remove part of the top layer of soil
• add 5 - 6 kg of rotted manure, humus
• put 1 - 2 tbsp. spoons of complex mineral fertilizer
• mix and return everything to the pit
• install a seedling
• cover the roots with the remaining soil

The root collar should remain on top of the ground when planting. Water the seedling well and mulch the tree trunk circle. Grape bushes require intensive watering only in the first two seasons after planting. Considering that black finger is a vigorous variety, when growing it you need to adhere to several rules.

Some features of growing Black finger grapes

Giberellin treatment

Back in the 60s - 70s of the last century, winegrowers noticed the physiological activity of a solution of the drug gibberellin when processing grapes at the stage of berry formation. The main tests began back in 1962. Impressive results were obtained when treating seedless varieties with a predominance of female flowers.

This caused the berries to double in size, which also led to an increase in yield. The same technique was used by Israeli breeders.During the period of berry growth varieties The black finger of its bunches needs to be treated with gibberellin. To get the result, you need to dilute 20 mg of the drug in a liter of water and spray the brushes when the size of the berries does not exceed half a centimeter. When ripe, treated black finger clusters will have berries 2 to 2.5 times larger than untreated ones.

Features of cultivation

In addition, when growing the black finger variety, it is advisable to avoid covering it with soil for the winter; this can provoke fungal and viral infections of the vine. It is also important for bushes of this variety to ration the yield and remove excess ovaries, as well as timely pruning of shoots into 8 eyes.

Grow best on trellises with canopies on them. The main use of black finger berries is fresh consumption; they can also be used in home canning for making compotes and jams.

Video about the Black Finger grape variety