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 SO2, glutathione and tannins on Cortese white wine oxidative evolution after different oxygen intakes

In this video recording of the IVES science meeting 2024, Silvia Motta (Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria – Centro di Ricerca Viticoltura ed Enologia, Asti, Italy) speaks about the effect of SO2, glutathione and tannins on Cortese white wine oxidative evolution after different oxygen intakes. This presentation is based on an original article accessible for free on OENO One.

Effect of irrigation and soil type on root growth and distribution of Vitis vinifera L. cv. Nero d’Avola grown in Sicily

L’essai a été effectué dans un vignoble du cépage Nero d’Avola greffé sur 1103 Paulsen dans un terroir de la D.O.C Alcamo en Sicile. Le système de conduite des vignes était à espalier, la taille à cordon coursonné et l’irrigation à goutte a goutte. On a été confrontés trois types de traitements: A) vignes non irriguées; B) vignes irriguées quand le

Impact of press fractioning on Pinot noir and Pinot meunier grape juice and wine compositions and colour

The separation of different grape juice press fractions is an important step in the production of sparkling base wines. A complete press cycle for this style of wine is a series of pressure increases (squeezes) resulting in variations in juice composition during the press cycle. After alcoholic fermentation, wines obtained from grape juices also exhibit strong differences for numerous characteristics. Nevertheless, there is no statistical study of the impact of the press cycle on grape juices and wine colour/composition. So, the aim of this study (vintage 2018) was to investigate the changes in composition and colour parameters of Pinot noir and Pinot meunier grapes juices, as well as their corresponding wines, during the pressing cycle.

A comprehensive and accurate annotation for the grapevine T2T genome 

Addressing the opportunities and challenges of genomics methods in grapevine (Vitis vinifera L.) requires the development of a comprehensive and accurate reference genome and annotation. We aimed to create a new gene annotation for the PN40024 grapevine reference genome by integrating the highly accurate and complete T2T assembly and the manually curated PN40024.v4 annotation. Here, we present a novel workflow to enhance the annotation of the T2T genome by incorporating past community input found in PN40024.v4. The pipeline’s containerization will improve the workflow’s reproducibility and flexibility, facilitating its inclusion as a shared workflow on the Grapedia portal, the grapevine genomics encyclopedia.

Typologie des paysages de vigne: un outil de planification

La culture de la vigne dessine un paysage rural original. En effet, de par ses qualités physiologiques, ses exigences agronomiques et les techniques qu’elle requiert, elle est à l’origine d’un portrait de nature sculpté, architecturé, parfois même comparé à l’art des jardins. A ce que l’on pourrait le cas échéant qualifier d’« art involontaire »