Terroir 1996 banner
IVES 9 IVES Conference Series 9 Evaluation of viticultural suitability of Arezzo Province (Tuscany)

Evaluation of viticultural suitability of Arezzo Province (Tuscany)

Abstract

Dans une région comme la Toscane, zone dans laquelle sont produits certains des meilleurs vins italiens et du monde, la province d’Arezzo a actuellement une importance relativement marginale. Il a été entrepris une étude de zonage viticole pour caractériser les productions et pour comprendre le potentiel du territoire.
Grâce à une étude pédologique il a été possible de caractériser le territoire en «unités» de paysage dans lesquelles il a été choisi une parcelle témoin. Le cépage utilisé majoritairement pour l’étude est l’autochtone Sangiovese; auquel il a été aussi ajouté quelques vignes de Merlot et Cabernet-Sauvignon pour étudier leur adaptabilité au territoire de la province.
L’étude du climat a été effectuée en utilisant les données des dix dernières années de différentes localités de la province. Les données récoltées ont été analysées avec les indices climatiques les plus communs pmr caractériser les différents milieu en relation avec la viticulture.
Pour chacune des 40 parcelles, il a été réalisé des courbes de maturation et pour la vendange il a été récolté des données sur la croissance, la production et la qualité; de plus sur un échantillon de raisin il a été effectué des microvinifications. Les vins obtenus ont été analysés chimiquement et sensoriellement pour estimer l’influence de l’environnement sur les caractéristiques du raisin et du vin.
Grâce à l’élaboration des données, il a été mis en évidence des différences sur les courbes de maturation, sur les données productives et qualitatives et sur l’analyse chimique et sensorielle des vins par microvinification.
Ainsi il a été possible de subdiviser dans une première phase le territoire provincial en quatre macrozone ayant des caractéristiques propres: Casentino, Val d’Ambra, Val di Chiana et Valdamo.

In a region like Tuscany, place in which some of the best Italian and world-wide red wines are produced, the Province of Arezzo has at the present a relatively marginal importance. A study for a viticultural zoning has been decided in order to characterise the productions and to know the capacity of the territory.
By a pedological survey it was possible to characterise the territory in Landscape Units in which the choice of the vineyards were made. The variety mainly used for the study was the autochthonous Sangiovese; beyond to this variety some vineyards of Merlot and Cabernet-Sauvignon have been characterised in order to estimate their suitability to the territory of the province.
The study of the climate has been realised using the data of the last ten years in different sites of the province. The collected data have been processed by the main climatic indices to characterise the different environment in relation to viticulture.
For everyone of the 40 vineyards maturation curves were executed and, at harvest, data of growth, yield and quality were surveyed; moreover on a sample of grape were made microvinificazions. The obtained wines chemically and sensorially analysed to estimate the environment influence on the characteristics of grape and wine.
Thanks to the data processing differences were evidenced in maturation curves, in productive and qualitative data and in sensorial and chemical analysis of wines obtained by microvinificazions. So it has been possible to subdivide, in a first stage, the provincial territory in four macrozones having peculiar characteristic: Casentino, Val d’Ambra, Val di Chiana and Valdarno.

DOI:

Publication date: February 15, 2022

Issue: Terroir 2002

Type: Article

Authors

TONINATO L., BRANCADORO L., PRIMA VERA F. and SCIENZA A.

*Università di Milano – Dipartimento di Produzione Vegetale, Via Celoria 2, 20133 Milano, Italy
** Ager Scri – Via Druso 10, 20133 Milano

Contact the author

Keywords

analyse sensorielle, courbes de maturation, indices climatiques, microvinification, Sangiovese
climatic indices, maturation curves, microvinifications, Sangiovese, sensorial analysis

Tags

IVES Conference Series | Terroir 2002

Citation

Related articles…

Validation of the viticulture zoning methodology applied to determine the homogenous soil units present on D.O. Ribera de Duero region

The methodology to viticulture zoning developed and proposed by Gómez-Miguel and Sotés (1992) has been studied in order to validate it. This was the main aim of this work

A look back at 20 years of exploring the future of the vines and wines sector

What if, in 25 years, most wines were dealcoholized and flavored ? What if vines were only cultivated to combat erosion, store carbon, and provide anthocyanins…? What if climate change completely changed the list of vine varieties cultivable for wine production in France? What if food stores had completely disappeared in favor of virtual platforms? And if… because the long-term future is not predetermined and therefore not knowable, because the future is open to several possibilities, because the future does not emerge from nothing but from the present which conceals heavy trends and weak signals, prospective approaches make it possible to consider the room for maneuver that actors have to promote the advent of a future, which we can hope to be chosen, at least in part.

Non-saccharomyces yeasts in the biocontrol of grape molds in vineyards to reduce the use of pesticides

The wide diffusion of organic cultivation of vineyards and the need to reduce the use of pesticides highlights the urgent need for alternative and sustainable methods of vine protection by pathogen molds.

Grape ripening timing as a base for viticultural zoning: an agro-ecological approach

Due to the central role of the ripening timing in the evaluation of the varietal response to the environmental resources, a method to manage maturation curves has been developed. The method produces an index of veraison precocity and overcomes several methodological problems, like the visual evaluation of the veraison point and the multi-annual and multi-varieties data processing. It is based on a statistical and mathematical processing of the sugar ripening curves.

Effect on the grape and wine characteristics of cv. Tempranillo at 3 production levels

The vineyard has experienced a general increase in yields mainly due to the elevated use of technology which caused a quality loss of grapes in more than one case. A large percentage of the Spanish vineyard is covered by a Denomination of Origin which limits the productive level of the vineyards as one of its regulations. The maximum production limit is a variable characteristic of each vineyard and is not usually regulated by agronomic criteria, and this explains the fact that each vineyard can reach high quality with a totally different yield from that set by the Denomination of Origin.