Introduced grape variety Supaga in the Lower Don region conditions

The purpose of research is to study the Supaga grape variety in the changing climate of the Lower Don Region and the possibility of using the harvest for processing into liqueur wines. The studies were carried out at the Don ampelographic collection using generally accepted methods and GOSTs for grape culture. The data analysis is presented for two periods: 2004-2006 and 2021-2023. The vineyards were cultivated in an uncovered grafted culture, without irrigation. The planting pattern is 3 × 1.5 m. The shape of the bushes is a two-sided horizontal cordon with a trunk height of 80-100 cm. The climatic conditions of the studies differed significantly by periods. The first period was cooler with an abundance of precipitation. The absolute minimum air temperature was recorded at minus 28 °C in 2006. The prevailing weather conditions in the first period contributed to outbreaks of epiphytoties: mildew, gray mold and oidium. The second period was favorable in terms of thermal conditions, but drier. Analysis of agrobiological records showed a high preservation of buds from 72.3 % in the first period to 93.3 % in the second and fruitfulness of shoots at the level of 82.1 and 91.6 %, respectively. The tasting score of liqueur wine is 8.7 points, which confirms the possibility of using the harvest of this variety for the preparation of liqueur wines. Based on the results of the study of the Supaga variety in the conditions of the Lower Don Region, it can be concluded that it has adaptive capabilities in conditions of an unstable climate, it can be recommended for expanding the range of grape plantations in the Rostov Region and more northern regions of the Russian Federation, and also used in selection as a source of economic and biological characteristics (frost resistance, high productivity, disease resistance and good product quality).