Characterization of sugar accumulation dynamics in grapes and the factors influencing this process at local scale

Abstract

Determining the sugar concentration in grape berries is essential for winegrowers, as it enables them to estimate the alcohol content in the final wine and optimize the harvest date. In the face of climate change and rising temperatures, understanding the factors affecting sugar accumulation dynamics is crucial, to adapt viticultural practices and maintain wine quality. This study aims to analyze the growth and environmental factors involved in sugar accumulation in grapes, using data collected in Saint-Émilion, Pomerol, and their satellite appellations (Bordeaux, France).