Terroir 1996 banner
IVES 9 IVES Conference Series 9 The influence of terroir on the quality of wine of the Cahors A.O.C

The influence of terroir on the quality of wine of the Cahors A.O.C

Abstract

[English version below]

Dans le but d’améliorer la qualité et la typicité des vins de l’Appellation d’0rigine Contrôlée CAHORS, une étude a été réalisée afin de mettre en évidence l’adéquation Cépage-Terroir- Qualité du vin. Selon la méthodologie proposée par MORLAT et ASSELIN (1992), neuf unités terroirs ont été déterminées. Sur chacune, des parcelles de référence homogènes quant au matériel végétal Cot ou Malbec ( cépage principal de cette appellation greffé sur S04, et aux méthodes culturales, ont été suivies au niveau agronomique et œnologique (GARCIA et al., 1996). Les résultats ont permis de déterminer les potentialités viticoles et œnologiques de chaque terroir. Des stratégies de gestion de vignoble peuvent être proposées aux vignerons afin de leur permettre la production de vin présentant les meilleurs qualités et typicité en fonction de leurs terroirs.

The aim of this study was to identify terroir-cultivar-wine quality adequations in order to improve the quality and typicity of wines from the “Appellation d’Origine Contrôlée” CAHORS. According to the approach defined by MORLAT and ASSELIN (1992), nine wine terroir units were characterized. Within each of these units, reference plots with homogeneous plant material (Cot or Malbec, the main cultivar, grafted on S04) were identified. These plots were also submitted to the same cultural practices and tillage operations. Furthermore, all the plots were subjected to the same agronomical and enological practices. Results were used to determine the viticultural and enological potentialities of each terroir. Relevant vineyard management strategies can thus be proposed to winegrowers in order to produce wines with the highest quality and typicity in relation to the vineyard terroir.

DOI:

Publication date: February 15, 2022

Issue: Terroir 2002

Type: Article

Authors

M. GARCIA (1); F. LAFFARGUE (2); E. BESNARD (3); H. IBRAHIM (1); A. CADET (1)

(1) Centre de Viticulture et d’Oenologie de Mid i-pyrénées -Avenue de l’Agrobiopole, 31320 Auzeville Tolosane
(2) Maison du Vin de Cahors- 430, Av J. Jaurès, B.P. 199,46004 CAHORS Cedex
(3) Chambre Régionale Agriculture des Pays de la Loire – 61, Avenue J. Joxé- BP 325, 49003 Angers Cedex 01

Keywords

terroir, qualité des vins, nutrition minérale, Cahors, Cot ou Malbec
terroir, quality of wine, plant nutrition, Cahors , Cot or Malbec

Tags

IVES Conference Series | Terroir 2002

Citation

Related articles…

Rootstock x environment interaction shapes shoot system phenotypic variation in grafted ‘Chambourcin’

Recent advances in phenomics and transcriptomics have the enhanced capacity for understanding how clonally propagated perennial crops like grapevines respond to their environments seasonally and over the course of multiple years. Because most grapevines are grafted, above-ground grapevine traits reflect scion genotype and its interaction with the local environment. In addition, traits expressed by the scion reflect rootstock genotype and how that rootstock is interacting with its environment seasonally and across years. To investigate rootstock x environment interaction on shoot systems in grafted grapevines we characterized comprehensive phenotypic variation in an experimental vineyard in Mount Vernon, Missouri, USA where the grapevine cultivar ‘Chambourcin’ is growing on its own roots and is grafted to three different rootstocks (‘1103P’, ‘3309C’, ‘SO4’).

Integrating genomic prediction into grapevine breeding programs

Genomic selection (GS) has emerged as a transformative tool for accelerating breeding programs by predicting the genetic potential of individuals using genome-wide markers.

Rootstock selection moderates the effect of rising temperatures through drought tolerance and modulation of stomatal conductance

Climate change is increasing crop evapotranspiration and reducing water availability, especially in the Mediterranean area.

Monitoring of ripening and yield of vineyards in Nemea region using UAV

Nemea region is the largest POD zone in Greece. Agiorgitiko (Vitis vinifera L. cv.) is the most cultivated variety in Greece with significant wine potential.

PIWIs’ variation in drought response under semi-controlled conditions 

Grapevine interspecific hybrids (PIWIs, from German “pilzwiderstandsfähige Rebsorten” meaning fungus tolerant grapevine cultivars), offer a promising alternative to traditional cultivars in many wine regions due to their tolerance to certain fungal diseases. This makes them a potential solution for sustainable wine production, particularly under organic systems. Despite extensive research on certain agronomic traits and susceptibility to biotic diseases, such as powdery and downy mildews, the response of these cultivars to abiotic stressors, such as drought, remains unclear. Our study aims to investigate the eco-physiological traits of two commercial PIWI cultivars, Muscaris and Souvignier gris, at the leaf level to evaluate their response to drought stress.