Terroir 1996 banner
IVES 9 IVES Conference Series 9 Viticultural zoning in the province of San Juan, Argentina. Preliminary results, year 2000

Viticultural zoning in the province of San Juan, Argentina. Preliminary results, year 2000

Abstract

[English version below]

La région viticole de San Juan (Argentine) est marquée par des températures très élevées et des variations diurnes faibles. La valorisation de la connaissance de cet environnement et de ses interactions avec le fonctionnement de la vigne et le lien au vin passent par l’étude de ses terroirs et de leur caractérisation. Le point de départ de ce travail est l’étude des zones mésoclimatiques aptes à la culture de la vigne de la Province de San Juan et à la caractérisation des sols de cette même région. L’objectif est de définir le potentiel vitivinicole des zones considérées. Le croisement d’un type de climat et d’une série de sols est à l’origine de l’identification des Unités de Zonage. Le travail est réalisé à l’échelle d’une oasis sur un ensemble de 31 parcelles viticoles de cépages Syrah qui constitue un réseau de parcelles d’observation, situées dans les différentes vallées de Tulum, Ullum, Zonda et Pedernal. Des aspects concernant les relations entre les indices climatiques, le sol, les variables agronomiques de comportement de la plante et la qualité du raisin et des vins, sont étudiés pour la définition des zones et de leur typicité. A la suite d’une première année d’étude, 16 Unités de Zonages regroupées en 5 grandes zones homogènes ont pu être identifiées dans cette région viticole. Ce travail sera poursuivi pour préciser les résultats et caractériser ces zones.

The viticultural region of San Juan province (Argentina) is characterized by high temperatures during summer with small variations along the day. The knowledge about this environment and its interaction with vineyards and wine can be valorized by the study of its “terroirs” and their characteristics. This study is based on the study of soils and those mesoclimatic zones that are competent for vineyards. The aim is to define agricultural and enological potential of zones. The comparison among different climate and soil data bases leads to the identification of Zoning Units. These units have been elected within the region based on an observatory net of 31 Syrah vineyards. They were located in the valleys of Tulum, Zonda Ullum and Pedemal.
In order to define different Zoning Units and their typicity, relations between climatic indixes, soil characteristics, agronomic variables of the plant behaviours, and the quality of grapes and wines have been studied. Sixteen Zoning Units have yet been identified and gathered in five big homogeneous zores. Further studies are foreseen to precise the results and better characterize these zones.

Download the PDF

DOI:

Publication date: February 15, 2022

Issue: Terroir 2002

Type: Article

Authors

M. GRASSIN, J. NAZRALA, H. VILA, C. TROILO

Station Expérimentale Agronomique (EEA) INTA Mendoza – Av. San Martin 3853 – 5507 Chacras de Coria

Keywords

zonage, vigne, terroir, climat, sol, typicité
zone, grapevine, Terroir, climate, soil, typicity

Tags

IVES Conference Series | Terroir 2002

Citation

Related articles…

Bioprotective non-Saccharomyces yeast as an alternative to sulfites for the winemaking process

Sulfur dioxide (SO2) is used in winemaking due of its antioxidant, antioxydasic and antiseptic properties. Excessive amount of SO2 can negatively impact wine sensory perception and be detrimental for health. Agri-food industries are more transparent towards consumers concerning addition of sulfites, and oenology is no exception in this clairvoyance. As a consequence, the increase of consumers preference for wine with low or absent of sulfites addition is notorious. In this context, the impact of low/zero sulfites winemaking process on the microbial community should be evaluated. Moreover, microbial agents corresponding to bioprotective cultures represent a growing interest as an alternative to sulfites preservation in the early stages of vinification. However, scientific studies conducted to demonstrate their real effect are almost rare.
Read More

Spectral features of vine leaves are influenced by their mineral content

The reflectance spectra of vegetation carry potentially useful information that can be used to determine chemical composition and discriminate between vegetation classes. If compared with analytical methods such as conventional chemical analysis, reflectance measurement provides non-destructive, economic, near real-time data. 

Read More

New breeding frontiers: application of the CRISPR-cas9 system in grapevine (V. vinifera L.) and improvements in plant regeneration

Nowadays, many policies are being adopted for direct agriculture towards more sustainable approaches. To continue to maintain a high production using fewer fertilizers, pesticides and water resources, agronomic techniques must be combined with biotechnological approaches. In grapevine, the breeding programs are restricted by the fact that it has a highly heterozygous genome, therefore, if on the one hand, we try to improve the characteristics, on the other hand it is necessary to preserve the original genome of the varieties. CRISPR-cas9 system is one of the smartest tools to carry out highly precise genetic modifications leaving the genetic background unchanged.

Read More

Le zonage viticole en Italie. État actuel et perspectives futures

Over the past few decades, viticultural research has made numerous contributions which have made it possible to better understand the behavior of the vine as well as its response to the conditions imposed on it by the environment and agronomic practices. However, these results have only rarely been used in the practical management of vineyards because the research has been carried out using partial experimental models where reality is only represented by a few factors which are sometimes even made more complex by the introduction of elements foreign to the existing situation and difficult to apply to production (varieties, methods of cultivation, management techniques, etc.). To these reasons, one could add a low popularization of the results obtained, as well as the difficulty of implementing the scientific contributions, which does not allow the different production systems to fully express their potential. This limit of viticultural research can only be exceeded by the design of integrated projects designed directly on and for the territory. Indeed, only the integrated evaluation of a viticultural agro-system, which can be achieved through zoning, makes it possible to measure, or even attribute to each element of the system, the weight it exerts on the quality of the wine.

Read More

Zonazione aziendale nel territorio del Chianti classico e valorizzazione dei vini

Nell’ambiente del Chianti Classico è stato applicato un progetto di zonazione aziendale con l’objettivo di valorizzare le produzioni dei diversi vigneti. In particolare sono stati individuati sette siti, sottoposti a studio particolareggiato per un triennio.

Read More