Research on the fertility and production of some local grape cultivars from Alba County, Romania
Abstract
The research was carried out during 2021-2022 growing seasons and involved observations and determinations of several local grape cultivars identified in the wine-growing areas of Alba County. Twelve cultivars were selected for detailed viticultural research and were compared to control varieties which are representative in the research area. Four local cultivars were included in the group for white wines analyzed in comparison to the control variety ‘Fetească regală’. Other additional four local cultivars were grouped for red wines, and compared to the control variety ‘Cabernet Sauvignon’. The remaining four local cultivars were grouped with those intended for table grapes. The cultivars were ranked based on their ampelographic characteristics and berries physico-chemical composition. Observations and analyses focused on the development of growing stages, fertility (e.g. fertile shoots rate, number of flowers per vine), grape yield, and berry quality (e.g. sugars content). One notable advantage of the local cultivars and biotypes included in the research was the very good resistance to diseases and pests, as well as lower input requirements compared to the control varieties, resulting in significantly lower production costs compared to the analyzed controls.
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