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.

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…

Effect of grape polysaccharides on the volatile composition and aromatic profile of Viura wines

AIM: Many research studies have analyzed the effect of polysaccharides in the aromatic composition of white wines.

Biomarker-based phenotyping of grapevine (vitis spp.) resistance to plasmopara viticola reveals interactions between pyramided resistance loci

Grape downy mildew, caused by plasmopara viticola, is one of the main diseases affecting viticulture worldwide and its control usually relies on frequent sprays with agrochemicals. Grapevine varieties resistant to p. Viticola represent an effective solution to control downy mildew and reduce the environmental impact of viticulture. Loci of resistance to p. Viticola (Rpv) have been introgressed from wild vitis species and some of them, like Rpv1, Rpv3.1 and Rpv10, are currently the most utilized genetic resources in grape breeding.

Spatial determination of areas in the Western Balkans region favorable for organic production

In problematic conditions for production of grapes and wine caused by the COVID-19 pandemic and the resulting occurrence of wine surpluses, producers are increasingly turning to the innovative viticulture and winemaking of products that are more appealing to the market and the consumers. On the other hand, consumption of the food safety or organic products, and therefore of organic grapes and wine, is increasingly common in the world, in particular in Europe. The Regional Rural Development Standing Working Group (SWG RRD), as a regional intergovernmental organization gathers actors in the viticulture and winemaking sector from states and territories of the Western Balkans (South-East Europe) in the Expert Working Group for Wine, with the aim of improving viticulture and winemaking in this region through joint activities. In accordance with the aforementioned, the SWG RRD is working on advancing organic production of grapes and wine, and on recognition of specificities of the terroir of wine-growing areas in Western Balkans. In addition, as part of the project “Facilitation of Exchange and Advice on Wine Regulations in Western Balkan Countries” helmed by the German Federal Ministry of Food and Agriculture, in addition to harmonization of relevant legislation with EU regulations, efforts are being invested towards recognition of organic wines. Within activities and project implemented by this organization, expert analyses and scientific research of the terroir of Western Balkans were carried out, and some of the results are presented in this paper.

Assessing bunch architecture for grapevine yield forecasting by image analysis 

It is fundamental for wineries to know the potential yield of their vineyards as soon as possible for future planning of winery logistics. As such, non-invasive image-based methods are being investigated for early yield prediction. Many of these techniques have limitations that make it difficult to implement for practical use commercially. The aim of this study was to assess whether yield can be estimated using images taken in-field with a smartphone at different phenological stages.

Unravelling regional typicality of Australian premium Shiraz through an untargeted metabolomics approach

Aims: The current study seeks to demonstrate that premium Shiraz wines from different Australian geographic indications (GI) can be distinguished by their volatile compound composition.