Fruit growing
and viticulture of South Russia

Annotation

Monitoring's data of the consumer's market show the currently increase of public demand for high-quality wines. That is why there was a need to expand the vineyards area with autochthonous varieties. The solution of this problem requires an increase in the production of land materials of these varieties. In a varieties nursery the important part is assigned plantations, where the main economic valuable products are the annual shoots, which serve as the initial material in the production of grapes sapling. The purpose of our research was to develop a mathematical model for calculation of economic productivity of nursery plants that will alow their biological potential as much as possible. The research were carried out in 2012-2013 at the nursery planting of autochthonous varieties of Tsimlyanskiy Black and Krasnostop Zolotovskiy. In the course of research a mathematical model that allows to calculate the potential productivity of nursery under the specific conditions of growing is carried out. The formula for calculation of cutting's output from grapes nursery is given, as well as the formula for calculation of number of standard cuttings, which can be obtained from one shoot. In accordance with the developed mathematical model for calculation of economic productivity of nursery plants the efficiency of the proposed method was determined at the plantations of grapes varieties of Tsimlyanskiy Black and Krasnostop Zolotovskiy. By comparison the calculated and actual data on the yield of cuttings the similar results are obtained. It is concluded that the proposed mathematical model takes into account the biological potential of nursery vines and it allows to calculate the possible output of standard cuttings with a sufficiently high level of accuracy. The proposed method gives a possibility to cultivate the shoots purposeful on uterine bushes of grapes with consideration to their biological potential.