Terroir 2012 banner
IVES 9 IVES Conference Series 9 Influence of pedoclimatic factors during berry ripening in Burgundy

Influence of pedoclimatic factors during berry ripening in Burgundy

Abstract

Berry composition at ripeness can be explained by many factors. This study was carried out from 2004 through 2011 in a 60 block network in the Yonne region, Burgundy. The impact of the main components of terroir – vintage, soil, exposition, topography, varietal, rootstock, age, density and vine management- were studied simultaneously, during berry ripening. Berry composition during ripening was assessed each week by the sampling of 400 berries and the following analyses of grape-juice were carried out : sugar, total acidity, malic acid, tartaric acid, pH, and potassium. The variables total acidity, malic acid and tartaric acid were anti-correlated to sugar content. The potassium variable explained an important part of the grape composition variability in the network. Statistical analysis allowed ranking of the terroir factors in order of importance during ripening. The vintage, highly significant, was the major factor, followed by factors cultivar, exposition and soil, who all had statistically significant influence. Pinot noir reaches maturity earlier than Chardonnay. Blocks with a North exposition present a delay in maturation, especially on steep slopes. Grapes reach maturity earlier on South exposed slopes, although this does not lead to higher sugar accumulations. The shallow limestone soils on hard bead-rock, limit potassium accumulation, probably because of limited water supply. Among the colluvium soils, variability may be explained by the importance of soil depth. The wine-growers factor had also a great influence in this study.

Download the PDF

DOI:

Publication date: October 1, 2020

Issue: Terroir 2012

Type: Article

Authors

Amélie BERTHAUT (1), Guillaume MORVAN (2)

(1) Concoeur, 21700 Nuits-Saint-Georges, Bordeaux Science Agro, 1cours du général de Gaulle, 33170 Gradignan
(2) Chambre d’agriculture de l’Yonne, 14 bis rue Guynemer, BP 50289, 89005 Auxerre cedex

Contact the author

Keywords

Ripening, variability, vintage effect, soil effect, exposition effect, typology

Tags

IVES Conference Series | Terroir 2012

Citation

Related articles…

Effects of post-fermentative cold maceration on chemical and sensory characteristics of Syrah, Cabernet Franc and Montepulciano wines

Astringency sensation decreases slowly during the aging of red wine. Complex reactions of condensation and precipitation of wine polyphenols are involved in this phenomenon. Wine composition and conditions of aging, such as temperature and oxygen availability, strongly influence evolution of the phenol matrix. Recently, a Post-Fermentative cold Maceration (PFM) technique was tested with the aim of accelerating reactions leading to the reduction of astringency and exploiting chemical compounds not extracted from the solid parts of grapes during the previous traditional maceration phase. To this purpose, an innovative maceration system was engineered and used to perform PFM trials on marc derived from vinification of different varieties of red grapes.

Read More

Long term influence of a cover crop in the agronomic and oenological performance of CV. Chardonnay

Cover crops are acknowledged to be an interesting tool to produce
higher quality grapes in red varieties, as they generally reduce vine vigour and yield. However, their incidence in white wine quality is not clear, since higher nitrogen availability can play an important positive
role, and cover crops may compete for this nutrient. The possible reduction in available nitrogen can also modify the fermentation processes, as well as the synthesis of aromas in the wine. The aim of this work was to evaluate the long-term effect of a grass cover crop on grape and wine quality.

Read More

Overall conceptual characterization of aged dry white wines using a mental descriptive questionnaire

The purpose of the present study was to understand the overall concept of an aged dry white wine using a descriptive mental questionnaire. A total of 680 worldwide participants, grouped according to their involvement in the wine business, replied to an online questionnaire to characterize the sensory analytical and synthetic descriptors of an aged dry white wine. The descriptors were selected using a Check-All-That-Apply (CATA) approach concerning wine colour, aroma, taste, mouthfeel, and global appreciation.

Read More

Vineyard soils characterization and its influence on the grape quality of cv. Carmenère in the Maipo Valley, Chile

Produced since 1998, the De Martino Single Vineyard Carmenère is the first Carmenère Icon wine of Chile. The grapes are coming form a plot of 11 ha in Isla de Maipo, where the technicians of the winery have developed knowledge of their work, resulting in 3 levels of quality of the grapes.

Read More

A multivariate clustering approach for a gis based territorial characterization of the montepulciano d’abruzzo DOCG “Colline Teramane”

The aim of the project was to characterize the Premium Denomination of Guaranteed Origin (DOCG) “Colline Teramane” wine-growing region and to delineate and define homogeneous zones (terroir units) within it, by applying a multivariate clustering approach combined with geomatics.

Read More