Determination of the effects of antitranspirants on the sugar accumulation applied in post-veraison period

Research was conducted in Edirne - İskender village, between 41° 39' 31.07" N ve 26° 37'34.78" E coordinates in 2018 vegetation period. Cabernet-Sauvignon/110R grafting combination was used as a plant material in Salim Altunhan vineyard. The aim of research was determination of the effects of antitranspirants on the sugar accumulation applied in post-veraison period. There were 3 different application periods (Veraison, Semi-Maturity, Pre-Maturation) and 3 different antitranspirant applications (Control, Vapor Gard, Kaolin) in the research. In the beginning of research phenological stages were recorded. After these, shoot characteristics in growing period, berry characteristics, cluster characteristics, grape juice characteristics, leaf area characteristics and yield characteristics were examined. Shoot and branch characteristics were controlled in Semi-Maturation (SM) period by using Vapor Gard treatment. Berry characteristics has reached desired properties in Control group in Pre-Maturation (PM) period. Cluster and grape juice characteristics were improved by Vapor Gard application in PM period while in same period leaf characteristics were improved by Kaolin application. Vapor Gard application in Veraison yield characteristics were increased. As a result in order to high quality Cabernet-Sauvignon cv. grape berry, grape juice and wine; as an antitranspirant Vapor Gard application in Semi Maturity period in Edirne province is proposed.