Terroir 1996 banner
IVES 9 IVES Conference Series 9 Effect of terroir on the quality evolution of Cabernet-Sauvignon in Penedès A.0.C.

Effect of terroir on the quality evolution of Cabernet-Sauvignon in Penedès A.0.C.

Abstract

Le Cabernet-Sauvignon est un cépage très répandu dans la région du Penedès (Espagne) où cette variété peut bien s’adapter et donne des produits de haute qualité. La croissance végétative et la composition du fruit dépendront de la mosaïque de sols disponibles dans l’Appellation. Dans ce sens, la cartographie du sol est un des meilleurs outils pour déterminer le potentiel viticole d’une région: son utilisation permet d’évaluer les différents terroirs présents dans une région. Le but de ce travail est d’évaluer l’évolution de la qualité dès le début de la saison de croissance jusqu’au vin final, en comparant des vignes de Cabernet-Sauvignon situées sur différents types de sols. L’étude a été réalisée pendant la période 2000-2001, sur deux parcelles de Cabernet Sauvignon greffé sur 41 B et SO4, âgées de 26 et 13 ans respectivement. Les souches sont palissées et taillées en Cordon de Royat. Chaque parcelle est composée par deux types de sol très différenciés: sol profond avec du schiste sur un sol caillouteux argilo-calcaire, et un sol profond limoneux sur un sol limoneux peu profond limité par une couche pétrocalcique.
La comparaison se fait au niveau de la composition minérale des feuilles, de la qualité du raisin à maturité et des vins finis. Ces unités de sol ont été déterminées en utilisant une cartographie du sol très détaillée basée sur la méthodologie de la FAO.
Les résultats indiquent que le Cabernet-Sauvignon sur le sol profond avec du schiste montre une meilleure nutrition minérale sur les parties végétatives que celles du Cabernet-Sauvignon sur sols calcaires ou limoneux. Ce type de sol a une grande porosité et profondeur, ce qui permet une bonne croissance et distribution des racines et également un bon état sanitaire dans la zone des racines. L’évolution de la composition de raisin depuis la véraison jusqu’à la maturité suggère que les sols profonds du schiste et les sols peu profonds limoneux ont une corrélation avec la vigueur, le rendement, le poids de la baie et la couleur. La dynamique spécifique de l’eau dans le sol, la variation de la réserve hydrique utile à chaque stade phénologique peut déterminer l’amélioration de la qualité sur ces sols. D’autre part, les vins obtenus sur chaque terroir, après microvinifications, présentent des différences importantes dans l’arôme et la structure. Cela montre que la connaissance de la distribution du terroir dans de grandes régions d’Appellation d’Origine est essentielle pour optimiser les plantations en ce qui concerne la qualité.

Cabernet-Sauvignon has become a very common grapevine in the Penedès region (Spain) where this variety can be well adapted and produce high quality products. The vegetative growth and fruit composition will depend on the wide range of soils of the A.O.C. area. In this sense, soil cartography is one of the best tools to determine the viticulture potential of a region using soil mapping that quantify different terroirs presents in the area. The aim of this work is to evaluate the whole evolution quality, from beginning of growing season to final wine, comparing Cabernet-Sauvignon vineyards located in different types of soils. The study was conducted in 2000-2001 period in two Cabernet-Sauvignon vineyards grafted on 41B and SO4. Vines are 26 and 13 years old respectively and its trelling system was “cordon Royat”. Each vineyard was composed by two vastly different types of soil which effect was compared: slate-schist deep stony soil vs. lime stone clay soil and silt deep deposit vs. a shallow silt soil limited with a petrocalcic layer. Comparison refers to minera] composition of vegetative parts, grape quality in maturity and quality of wine resulting. These soil units have been determinate using very detailed soil cartography based on FAO methodology.
Results indicate that Cabernet-Sauvignon on slate-schist deep stony soil shows a better level of mineral nutrients on vegetative parts compared to calcareous or silties soils. This type of soil has large porous space and depth, allows a large root growth and distribution and also the maintenance of a good sanitary condition in the root zone. The evolution of grape composition from the veraison to harvest suggest that slate-schist deep stony soil and shallow silt soil have a correlation with vigour, yield, berry weight and colour degree. Specific dynamics of soil water, varying holding capacity and available water in each phenologic stage can determinate the increase in quality in these soils. Otherwise, wines obtained of each terroir, using microvinifications, show inportant differences in aroma and structure. That indicates that the knowledge of distribution of terroir in large A.O.C. areas is essential to optimise plantations in terms of quality.

DOI:

Publication date: February 15, 2022

Issue: Terroir 2002

Type: Article

Authors

X. SORT and A.ZAYAS

Viticulture Department. Miguel Torres S.A. C/ Comerç 22. 08720 Vilafranca del Penedès. Spain

Keywords

Cabernet sauvignon, qualité de ta vendange, A.O.C. Penedès, Cartographie du sol, terroir
cabernet sauvignon, harvest quality, Penedès A.O.C., soil cartography, terroir

Tags

IVES Conference Series | Terroir 2002

Citation

Related articles…

Different soil types and relief influence the quality of Merlot grapes in a relatively small area in the Vipava Valley (Slovenia) in relation to the vine water status

Besides location and microclimatic conditions, soil plays an important role in the quality of grapes and wine. Soil properties influence…

Climate ethnography and wine environmental futures

Globalisation and climate change have radically transformed world wine production upsetting the established order of wine ecologies. Ecological risks and the future of traditional agricultural systems are widely debated in anthropology, but very little is understood of the particular challenges posed by climate change to viticulture which is seen by many as the canary in the coalmine of global agriculture. Moreover, wine as a globalised embedded commodity provides a particularly telling example for the study of climate change having already attracted early scientific attention. Studies of climate change in viticulture have focused primarily on the production of systematic models of adaptation and vulnerability, while the human and cultural factors, which are key to adaptation and sustainable futures, are largely missing. Climate experts have been unanimous in recognising the urgent need for a better understanding of the complex dynamics that shape how climate change is experienced and responded to by human systems. Yet this call has not yet been addressed. Climate ethnography, coined by the anthropologist Susan Crate (2011), aims to bridge this growing disjuncture between climate science and everyday life through the exploration of the social meaning of climate change. It seeks to investigate the confrontation of its social salience in different locations and under different environmental guises (Goodman 2018: 340). By understanding how wine producers make sense of the world (and the environment) and act in it, it proposes to focus on the co-production of interdisciplinary knowledge by identifying and foreshadowing problems (Goodman 2018: 342; Goodman & Marshall 2018). It seeks to offer an original, transformative and contrasted perspective to climate change scenarios by investigating human agency -individual or collective- in all its social, political and cultural diversity. An anthropological approach founded on detailed ethnographies of wine production is ideally placed to address economic, social and cultural disruptions caused by the emergence of these new environmental challenges. Indeed, the community of experts in environmental change have recently called for research that will encompass the human dimension and for more broad-based, integrated through interdisciplinarity, useful knowledge (Castree & al 2014). My paper seeks to engage with climate ethnography and discuss what it brings to the study of wine environmental futures while exploring the limitations of the anthropological environmental approach.

Protected Designation of Origin (D.P.O.) Valdepeñas: classification and map of soils

The objective of the work described here is the elaboration of a map of the different types of vineyard soils that to guide the famers in the choice of the most productive vine rootstocks and varieties. 90 vineyard soils profiles were analysed in the entire territory of the Origen Denominations of Valdepeñas. The sampling was carried out in 2018 (June to October) by making a sampling grid, followed by photointerpretation and control in the field. The studied soils can be grouped into 9 different soil types (according to FAO 2006 classification): Leptosols, Regosols, Fluvisols, Gleysols, Cambisols, Calcisols, Luvisols and Anthrosols. A map showing the soil distribution with different type of soils has been made with the ArcGIS program. Regarding to the choice of rootstock, Calcisoles are soils with a high active limestone content, so the rootstocks used in these soils must be resistant to this parameter; Luvisols are deep soils with high clay content, so they will support vigorous rootstocks. Because the cartographic units are composed of two or more subgroups, with are associated in variable proportions, 9 different soil associations have been established; Unit 1: Leptosols, Cambisols and Luvisols (80%, 15% and 5% respectively); Unit 2: Cambisols with Regosols and Luvisols (40%, 30% and 30% respectively); Unit 3: Cambisols and Gleysols with Regosols (40%, 40% and 20% respectively); Unit 4: Regosols with Cambisols, Leptosols and Calcisols (40%, 30%, 15% and 15% respectively); Unit 5: Cambisols, Leptosols, Calcisols and Regosols (25% each of them); Unit 6: Luvisols with Cambisol and Calcisols (80%, 10% and 10% respectively); Unit 7: Luvisols and Calcisols with Cambisols (40%, 40% and 20% respectively); Unit 8: Calcisols with, Cambisols and Luvisols (80%, 10% and 10% respectively); Unit 9: Anthrosols. These study allow to elaborate the first map of vineyard soils of this Protected Designation of Origin in Castilla-La Mancha.

Spatial determination of areas in the Western Balkans region favorable for organic production

In problematic conditions for production of grapes and wine caused by the COVID-19 pandemic and the resulting occurrence of wine surpluses, producers are increasingly turning to the innovative viticulture and winemaking of products that are more appealing to the market and the consumers. On the other hand, consumption of the food safety or organic products, and therefore of organic grapes and wine, is increasingly common in the world, in particular in Europe. The Regional Rural Development Standing Working Group (SWG RRD), as a regional intergovernmental organization gathers actors in the viticulture and winemaking sector from states and territories of the Western Balkans (South-East Europe) in the Expert Working Group for Wine, with the aim of improving viticulture and winemaking in this region through joint activities. In accordance with the aforementioned, the SWG RRD is working on advancing organic production of grapes and wine, and on recognition of specificities of the terroir of wine-growing areas in Western Balkans. In addition, as part of the project “Facilitation of Exchange and Advice on Wine Regulations in Western Balkan Countries” helmed by the German Federal Ministry of Food and Agriculture, in addition to harmonization of relevant legislation with EU regulations, efforts are being invested towards recognition of organic wines. Within activities and project implemented by this organization, expert analyses and scientific research of the terroir of Western Balkans were carried out, and some of the results are presented in this paper.

Impact of climate change on the viticultural climate of the Protected Designation of Origin “Jumilla” (SE Spain)

Protected Designation of Origin “Jumilla” (PDO Jumilla) is located in the Spanish provinces of Albacete and Murcia, in the South-eastern part of the Iberian Peninsula, where most of the models predict a severe impact of climate change in next decades. PDO Jumilla covers an area of 247,054 hectares, of which more than 22,000 hectares