Growing Season Climate Variability and its Influence on Sauvignon Blanc and Pinot Gris Berries and Wine Quality: Study Case in Romania (2005-2015)

Abstract

The purpose of our research was to find out what influence climatic variability in the growing season has on the berry and wine composition in two white grape varieties grown in the vineyard of Banat University of Agricultural Sciences and Veterinary Medicine from Timisoara, located in the western area of Romania. The quality and characteristics of the wines produced in a limited area is essentially due to the environment, including natural and human factors. Two white cool-intermediate climate grape varieties-Sauvignon Blanc and Pinot Gris were chosen to study the impact of climate change on the main characteristics of juice and wine. A number of 40 berries from each variety was chosen for phenol extraction, total soluble solids (sugar content), titratable acidity and pH determinations. Wine samples were analysed after one year of ageing in the bottle. Alcohol concentration was not majorly influenced by temperature and rainfall over the years. Some experimental years with hot weather were favourable for sugar accumulation in berries and wine respectively;therefore, potential alcohol also increased. In the last decade, annual and monthly variability of rainfall and temperature influenced the phenological cycle of grapevines most, delaying or accelerating the developing of foliar area, as well as the ripening and harvesting time, which has a direct influence on grapes and wine products.

Investigating Evolution and Balance of Grape Sugars and Organic Acids in Some New Pathogen-Resistant White Grapevine Varieties

“…Moreover, the time interval when TSS accumulation rates were higher than 0.3 • Brix day −1 was much longer in PRV than in Ortrugo and Sauvignon Blanc, especially in 2020 (Figure 5A-D). While Ortrugo and Sauvignon Blanc are well known for their slow sugar accumulation and low maximum sugar thresholds [42,43], such fast sugar accumulation dynamic exhibited especially by Sauvignon Kretos and UD 80-100 could easily lead to excessive wine alcohol content and unbalanced aroma, especially in white wines [1]. Our results are overall similar to the findings of Poni et al [20], who compared Sangiovese and UD 72-096 (a Sangiovese x Bianca PRV).…”

Spatial and temporal variability of cv. Tempranillo response within the Toro DO (Spain) and projected changes under climate change

“…The effect, however, can be different depending on the variety and for areas that have different climatic conditions. In addition, changes in grape composition have also been reported associated with changes in temperature and available water (Duchêne and Schneider, 2005;Iglesias et al, 2010;Salazar Parra et al, 2010;Bonada et al, 2015;Nistor et al, 2018;Barnuud et al, 2014;Sadras et al, 2013). Furthermore, land and crop management will be important to mitigate the effects of climate change on vines and to maintain grape quality under warmer conditions.…”

Projected effects of climate change on Tempranillo and Chardonnay varieties in La Mancha Designation of Origin

“…In view of the trends in temperatures recorded during the last decades, various studies have already shown a trend of earlier phenology and harvest in different viticultural areas, although the degree of change may not be the same in all zones and for different varieties (Bock et al 2011;Fraga et al 2016;Ramos et al 2018; among others). In addition, climate variability also influences grape composition and quality (Bock et al 2011;Nistor et al 2018).…”