Terroir 1996 banner
IVES 9 IVES Conference Series 9 Hierarchy of the interactions between physical and biological parameters intervening in the Pyrenean Gascon foothill vineyard

Hierarchy of the interactions between physical and biological parameters intervening in the Pyrenean Gascon foothill vineyard

Abstract

Un travail sur les A.O.C. du piémont pyrénéen occidental permet de construire une hiérarchie de paramètres climatiques, géo-pédologiques, morphologiques, de saisir leurs niveaux d’interaction et d’élaborer une méthodologie pour proposer un zonage. Le départ est l’analyse de formes, fondamentale pour hiérarchiser les unités et définir les expositions. Le paramètre climatique, toujours nnjeur, est analysé, à 3 échelles. Puis les sols sont étudiés dans une logique de toposéquence, leurs aptitudes sont jugées en fonction de l’interaction avec le microclimat de chaque parcelle. Viennent alors des analyses texturales et géochimiques qui ne sont que des supports pour les choix de pratiques viticoles. Dans un piémont, c’est le système des pentes qui guide le zonage, mais ces terroirs portent également l’empreinte d’une forte tradition humaine, qui doit s’ouvrir à la modernité tout en valorisant ses originalités.

A work on the A.O.C. of Pyrenean foothill wakes it possible to build a hierarchy of parameters to seize their levels of interactions and to work out a methodological protocol to propose a zoning. The departure is the forms analysis, fundamental for hierarchizing the units and to define the exposures. The always major climatic parameter, is analysed, on 3 scales (global, regional, local). Then the soils are studied in a logic of toposequence. The aptitudes of the soil are judged according to their interaction with the microclimate of each parcel. Come then from the texture and geochimical analysis, which are only supports for the viticultural practices choices. A cartographic expression is then given. In a foothill, it is the system of the slopes, which guides zoning, but these traditional soils also carry the print of a story human tradition, which must open with modernity while preserving and valorizating its originalities.

 

 

 

DOI:

Publication date: February 15, 2022

Issue: Terroir 2002

Type: Article

Authors

Jean DELFAUD and Roger SABRIER

Géodynamique des Bassins – Université de Pau – CURS-IPRA – BP 1155 – 64013 PAU

Keywords

Piémont gascon, Terroirs, Formes, Climat, Sols, Zonage, Géochimie, Minéraux argileux, Capacité d’échange
Gascon foothill, Vineyard, Morphology, Climate, Soils, Zoning, Geochimistry, Clay minerais, Exchange capacity

Tags

IVES Conference Series | Terroir 2002

Citation

Related articles…

Climate effect on ripening process in Vitis vinifera, L. cv. Cencibel

A seven years survey (2003 to 2009) has been carried out over old traditional vineyards cv. Cencibel in La Mancha region (Spain). Seven plots with more than 35 years old were sampled from veraison to harvest, measuring soluble solids (ºBaumé) and acid concentration (g/l in tartaric acid).

Effects of a new vacuum evaporation method on chemical and sensory properties of must and wine

A new process for vacuum evaporation was developed where evaporation takes place near the inner surface of a vortex produced by a rotor submerged in the liquid. Contrary to the state of the art the Vortex rotor process does not need a vacuum vessel but the rotating liquid creates a geometrically stable low pressure void surrounded by a vortex stabilized by the equilibrium between centrifugal forces and the pressure difference. First tests with water and sugar solutions at concentrations similar to grape must were conducted to verify the theoretical predictions, test the performance under different conditions and study the effect of various process parameters (Rösti et al 2015).

Soils, climate, nutritive status and production of cv “Palomino fino” in the superior quality area of the Jerez-Xérès-Sherry zone

The Registered Appellation of Origin Mark (RAOM) « Jerez-Xérès-Sherry and Manzanilla Sanlucar de Barrameda » is one of the oldest and more important zone in wine history and production. «Albarizas» unit (white calcareous marls with sea-fossils) is the most representative geological material of the RAOM (75%) and even more in the central-NW area of the RAOM, known as «Jerez Superior» area (Superior Quality Sherry Area). « Albarizas » form undulated hillocks (3-10% slope) and hills (>10% slope), the litologic unit has E-W and S-W direction, and Regosols and Leptosols are the principal soils.

Changes in phenolic maturity and texture characteristics of the grape berry under pre-, and post-veraison water deficit

Kékfrankos (Vitis vinifera L.) grapevines grafted on Teleki-Kober 5BB rootstock were submitted to water deficit under greenhouse conditions.

Oak wood influence on the organoleptic perception of red wine

Some wood substances such as ellagitannins (vescalagin, castalagin, grandinin, roburins (A, B, C, D, E)…) can be extracted during wine ageing in oak barrels. The level of these hydrolysable tannins in wine depends of the species and origin of oak wood as well as its treatment during barrel realization.