Terroir 2010 banner
IVES 9 IVES Conference Series 9 Etude des effets millésime, situation et sol à partir d’un observatoire du Gamay en beaujolais

Etude des effets millésime, situation et sol à partir d’un observatoire du Gamay en beaujolais

Abstract

Des expérimentations sur Gamay ont été réalisées en Beaujolais de 2000 à 2006 sur 10 parcelles d’AOC différentes. De nombreuses mesures ont été effectuées à différents stades (vigne, baies récoltées, vinification et bouteille avec ou sans vieillissement). Ces mesures sont également de natures différentes (données phénologiques, analytiques, dégustation). Des analyses de la composition des sols sont également disponibles. Des travaux d’analyse de données ont permis d’effectuer une analyse exploratoire de la base de données afin de déterminer et quantifier les effets de divers facteurs (parcelle, millésime) sur certains des paramètres mesurés au cours du procédé de vinification. Ces effets ont également été mis en relation avec l’analyse des sols.

Les résultats confirment l’effet important du millésime. Une typologie des millésimes se dégage grâce aux outils utilisés. Un fort effet parcelle est également mis en évidence. Une corrélation existe entre couleur et acidité. Il est vérifié que la variable de rendement n’est pas responsable de l’effet parcelle pour les témoins. L’effet parcelle est en partie bien expliqué par la précocité, liée en général à l’altitude et au climat. Par contre cet effet est peu expliqué par le type d’AOC. La typologie de composition des sols présente un lien avec le type d’AOC. Les Beaujolais-Villages présentent notamment une bonne homogénéité. La composition des sols semble avoir peu d’impact sur le raisin et le vin produits sur les témoins.

English version: From 2000 to 2006 an important study was carried out on 10 plots in different Beaujolais AOC. Numerous measures were made at different stages (vine, must, vinification) with different nature (phenology, chemical, sensorial analysis). Data analysis have allowed to determine and quantify factor effects such as situation or vintage on wine characteristics. Soil analysis were also used in this study.

Results confirm important effect of vintage and it is possible to classify the different vintages with statistic tools used in this study. An important situation effect, independent of yield, was also highlighted. This effect is well explained by earliness but poorly by AOC. A strong correlation exists between wine color and acidity. There is a good relation between soil type and AOC, particularly with Beaujolais-Villages. But soil composition seems to have a weak influence on grape and wine characteristics.

Download the PDF

DOI:

Publication date: October 6, 2020

Issue: Terroir 2010

Type: Article

Authors

V. Lempereur (1), S. Preys (2), J.Y. Cahurel (1)

(1) IFV-SICAREX-Beaujolais, 210 boulevard Vermorel, BP 320, 69661 Villefranche Cedex, France
(2) Ondalys, 385 avenue des Baronnes, 34730 Prades-le-Lez, France

Contact the author

Keywords

Data analysis – earliness – situation – soil – vintage

Tags

IVES Conference Series | Terroir 2010

Citation

Related articles…

Climate change impacts: a multi-stress issue

With the aim of producing premium wines, it is admitted that moderate environmental stresses may contribute to the accumulation of compounds of interest in grapes. However the ongoing climate change, with the appearance of more limiting conditions of production is a major concern for the wine industry economic. Will it be possible to maintain the vineyards in place, to preserve the current grape varieties and how should we anticipate the adaptation measures to ensure the sustainability of vineyards? In this context, the question of the responses and adaptation of grapevine to abiotic stresses becomes a major scientific issue to tackle. An abiotic stress can be defined as the effect of a specific factor of the physico-chemical environment of the plants (temperature, availability of water and minerals, light, etc.) which reduces growth, and for a crop such as the vine, the yield, the composition of the fruits and the sustainability of the plants. Water stress is in many minds, but a systemic vision is essential for at least two reasons. The first reason is that in natural environments, a single factor is rarely limiting, and plants have to deal with a combination of constraints, as for example heat and drought, both in time and at a given time. The second reason is that plants, including grapevine, have central mechanisms of stress responses, as redox regulatory pathways, that play an important role in adaptation and survival. Here we will review the most recent studies dealing with this issue to provide a better understanding of the grapevine responses to a combination of environmental constraints and of the underlying regulatory pathways, which may be very helpful to design more adapted solutions to cope with climate change.
Read More

Technical innovation and quality control of wine production in China

Recent decades have witnessed an evolving trend of diverse product types, improved quality, and green, low-carbon, and sustainable development in chinese wine market. A quality evaluation system, namely, with a dual orientation of “flavor compounds” and “sensory evaluation” is used as guidance for winemaking innovation in China.

Read More

PHENOTYPIC DIVERSITY AND BIO-PROTECTION CAPABILITY OF METSCHNIKOWIA SP. IN OENOLOGY

Nowadays, the trend is to reduce the use of chemical inputs in the food sector, including in oenology. One of the inputs widely used in the wine making process are sulfites, for its several properties: antimicrobial and antioxidiant. This use isn’t without consequences on consumer’s health and environment, it can lead for example to allergic reactions and pollution. To limit the addition of chemical inputs, microbial alternatives are used. It consists to inoculate in grape must, a micro-organism able to inhibit the growth of the negative indigenous flora during the phase before the fermentation and to guarantee the sensory qualities of wines.

Read More

«Promitheus» the new greek red wine grape arromatic variety

This paper presents is the create, the study and amplographic description the newGreek aromatic variety of red wine grapes “Promitheus”, created in 2012

Read More

Elaboration des cartes conseils pour une gestion du terroir à l’échelle parcellaire: utilisation d’algorithmes bases sur des paramètres physiques du milieu naturel

The “Anjou Terroirs” programme aims at bringing the necessary scientific basis for a ratio­nal and reasoned exploitation of the technical itinerary of the terroir. The scale study is 1/12500. For the mapping, many parameters, such as the granulometry or the depth of soil are observed to each point of caracterisation.

Read More