Varietal "vigorous" black currant

Many lovers of currants, not only black ones, try to buy and plant the best varietal bushes on their plot. This is understandable - the berries are larger, the harvest is greater, and the resistance to weather conditions of varietal individuals is higher. One of my creations is Vigorous Blackcurrant. The most difficult thing in its cultivation and propagation is to buy real varietal bushes first hand, because fakes are often sold at bazaars and exhibitions.
Black currant variety Yadrenaya was specially bred at the Horticulture Research Institute named after. M.A. Lisavenko in Siberia. Vigorous black currant is valuable because one bush produces a fairly large amount of harvest, and although the berries themselves are not too large (there are other, larger berry varieties), they hang in clusters like grapes, and this makes harvesting easier. According to the degree of ripening, it belongs to the mid-late varieties. Tolerates winter frosts well!
In order for black currants to feel good throughout the year, you need to renew the tree trunk circle in the spring (or maybe even in the fall) (dig up the soil around a bush with a diameter of about 1 meter, apply soil fertilizers, for example, humus, diluted chicken or pigeon droppings, at worst, "Gumi". If the soil is too "heavy", you can dig it up with fallen autumn leaves (the same foliage can be used to cover a bush from frost), straw, duckweed (if there are bodies of water nearby).
Once a year (in spring), it is advisable to treat the bush with special solutions to protect against pests, becauseDespite its resistance to aphids, powdery mildew, mites and other parasites, infection from neighboring plants is possible.