Results of the introduced technical grape varieties study under Dagestan conditions

The objective of the studies is to examine the introduced grape varieties that are promising for the con-ditions of Dagestan in order to expand the range and optimize the conveyor of wine grape varieties. The agrobiological and economic-technological characteristics of technical grape varieties of domestic se-lection are presented. The studies were conducted at the experimental base of the DSOSViO branch of the SKFNCSVV in 2022–2024. The objects of the studies are the following grape varieties: Krasnostop Zolotovsky, Platovsky, Dionis, Saturn, Lazurny. The varieties Pervenets Magaracha (own-rooted culture) and Cabernet-Sauvignon (grafted culture, Kober 5BB) were used as a control. The grape culture is unco-vered, irrigated. The shape of the bushes is cordon Kazenava, the height of the trunk is 70 cm. The plan-ting scheme is 2.5  1.5 m. According to the productivity indicators during the research period, the best varieties were Lazurny (12.0 t/ha), Platovsky (10.5 t/ha), Krasnostop Zolotovsky (6.3 t/ha). All varieties annually had high indicators for juice yield (up to 80 %) and sugar accumulation (180–240 g/dm3) and were not inferior to the control varieties Cabernet-Sauvignon and Pervenets Magaracha. The bushes had good indicators of growth maturation, the varieties are resistant to biotic and abiotic stressors. The Lazurny and Platovsky varieties can take a worthy place in the conveyor belt of technical varieties for obtaining terroir wines of the highest quality in the conditions of Dagestan. The studied varieties of the wine direction can be effectively cultivated in grafted culture in the climatic conditions of the Republic of Dagestan, they are also advisable to use in breeding programs. They have great prospects for expanding the assortment of the Republic of Dagestan and the range of high-quality wines with protected designations of origin.