Akademik Veri Yönetim Sistemi
ERWERBS-OBSTBAU, cilt.65, sa.6, ss.1979-1990, 2023 (SCI-Expanded)
Canopy management is a viticulture tool to improve berry and wine quality. Accordingly, the main purpose of this study is to evaluate the effects of cluster thinning at two different times (V: cluster thinning at the beginning of veraison and AV: cluster thinning at the end of veraison), leaf removal (LR), and combinations of cluster thinning-leaf removal (VLR: cluster thinning at the beginning of veraison and leaf removal before flowering, AVLR: cluster thinning at the end of veraison and leaf removal before flowering) on the quality of 'Syrah' wines. The highest pH, total phenolic compound, total anthocyanin, antioxidant capacity, colour parameters, phenolics and anthocyanin compound levels were obtained from VLR and AVLR wines. Total phenolic compound, total anthocyanin, trans-resveratrol, catechin and malvidin-3-glucoside levels of AVLR wines increased by 74%, 56%, 20%, 42%, and 10%, respectively, compared to the control group wines. According to the results of flavour sensory profile, AVLR wines had the highest scores in the parameters of intensity, dark fruit, liquorice, chocolate, dried fruit, and earthy. The wines obtained from combinations of leaf removal and cluster thinning (VLR and AVLR) had a higher score in body, harmony, and peppery parameters compared to the control wines. The characteristic rotundone aroma of 'Syrah' wines was also felt most in VLR and AVLR wines according to the sensory profile tastings. This research aims to provide data to viticulturists and oenologists on the use of sustainable alternative practices in viticulture of 'Syrah' variety, which is one of the most grown red wine grapes in Turkey. Based on the results, it may be concluded that the combination of cluster thinning at the end of veraison and leaf removal has a large impact on the organoleptic quality and antioxidant compounds in wines.