engleski

Impact of cluster thinning on Merlot and Cabernet Sauvignon (Vitis vinifera L.) must quality

The aim of this study is to present the influence of yield reduction on the chemical composition of must of black grapevine varieties (Merlot and Cabernet Sauvignon). The study was conducted in the vineyard and laboratory of the Polytechnic of Pozega in 2019. The thinning of the clusters was done prior to veraison the on set of the phenophase of the ripening of the grapes. Each shoot was left with one cluster, resulting in a 25% yield reduction in Cabernet Sauvignon and 34% in Merlot. Statistical analysis revealed that the ampelotechnical procedure had a significant effect on the average sugar content, total acids and pH value of Cabernet Sauvignon variety. Although the differences between the average values of the other parameters among the treatment are visible, they are not statistically significant. The analysis of the obtained paramatars shows that in 2019, under the given environmental conditions, the operation of thinning clusters on the cultivars in question was not justified

Merlot ; Cabernet Sauvignon ; Cluster thinning ; chemical composition of must ; Kutjevo vineyards

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