Terroir 2008 banner
IVES 9 IVES Conference Series 9 Typology of wines in touch with environmental factors of terroirs and grapevine. Application to the Chinon vineyard

Typology of wines in touch with environmental factors of terroirs and grapevine. Application to the Chinon vineyard

Abstract

According to the vintage, it may be difficult for vine growers to make a decision regarding the type of wine in relation with the soils. The present work aims at proposing typology of wines to the Chinon growers, as a basis for reflection on the wine type in relation with the terroir units and the vintage water supply conditions.
In order to bring out factors associated to a wine structure, a first classification was established thanks to a multiple factorial analysis (MFA), taking into account three qualitative variables resulting from a survey on 506 cultural units of the Chinon vineyard. This first classification was then linked to a second one obtained through an ascendant hierarchical classification (AHC) carried out on an experimental network of the INRA-UVV unit of Angers (49-France). This network of 14 plots, distributed on different terroir units in the Chinon, Bourgueil and Saumur AOC, was monitored for physiological and meteorological data over the 2002-2005 period. The AHC used the data for a humid year (2004) and a dry year (2005). For each year, the experimental plots were grouped into three classes according to their pedoclimatic profiles.
By crossing the two classifications it was possible to elaborate a typology of the Chinon wines in relation with the environmental factors of the terroir units and the water supply conditions of the vintage.
This method, based only on two reference years and a wine typology for the Cabernet franc variety, was successful for analyzing the conditions for the elaboration of a given type of Chinon wine in relation to a precise cartography of the terroir units. This prospective process needs to be generalized.

Download the PDF

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

V. COURTIN (1), D. RIOUX (1), D. BOUTIN (2), S.CESBRON (1), A-C.KASPRIK (2)

(1) UMT Vinitera – Cellule Terroirs Viticoles, 42 rue Georges Morel, 49071 Beaucouzé Cédex
(2) Chambre d’Agriculture d’Indre-et-Loire, 38 rue Augustin Fresnel, BP 139, 37171 Chambray les Tours

Contact the author

Keywords

Chinon vineyard, terroir, vintage rainfall, wine typology

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

Impacts of environmental variability and viticultural practices on grapevine behaviour at terroir scales

Climate change poses several challenges for the wine-industry in the 21st century. Adaptation of viticultural and winemaking practices are therefore essential to preserve wine quality and typicity. Given the complex interactions between physical, biological and human factors at terroir scales, studies conducted at these fine scales allow to better define the local environment and its influences on grapevine growth and berry ripening.

Read More

Comparison of ancestral and traditional methods in the elaboration of sparkling wines; preliminary results

Top quality sparkling wines (SW) are mostly produced using the traditional method that implies a second fermentation into the bottle[1]. That is the case of sparkling wines of reputed AOC such as Champagne, Cava or Franciacorta. However, it seems that the first SW was elaborated using the ancestral method in which only one fermentation takes place[2]. That is the case of the classical SW from the AOC Blanquette de Limoux[3]. In both cases, SW age in the bottle during some time in contact with lees favoring yeast’s autolysis[4]. There is a lot of information about traditional method but only few exists about ancestral method. The aim of this work was to compare SW made by the ancestral method with SW made by the traditional method.

Read More

Hyperspectral imaging and machine learning for monitoring grapevine physiology

Rootstocks are gaining importance in viticulture as a strategy to combat abiotic challenges, as well as enhancing scion physiology and attributes. Therefore, understanding how the rootstock affects photosynthesis is insightful for genetic improvement of either genotype in the grafted grapevines. Photosynthetic parameters such as maximum rate of carboxylation of RuBP (Vcmax) and the maximum rate of electron transport driving RuBP regeneration (Jmax) have been identified as ideal targets for breeding and genetic studies. However, techniques used to directly measure these photosynthetic parameters are limited to the single leaf level and are time-consuming measurements.

Read More

Toward a model of grape proanthocyanidin extraction during vinification

PAs are compartmentalised within the grape berry, and differ in their composition and degree of extractability. Within each compartment, the CWM limits PA extraction firstly by its degree of permeability and secondly its ability to complex with PA molecules.

Read More

How much does the soil, climate and viticultural practices contribute to the variability of the terroir expression?

When considering the application of a systemic approach to assess the intrinsic complexity of agricultural production, the following question immediately arises

Read More