Terroir 1996 banner
IVES 9 IVES Conference Series 9 Le zonage viticole: instrument pour la récuperation d’un ancien cépage des collines de Conegliano (Verdiso – V. vinifera)

Le zonage viticole: instrument pour la récuperation d’un ancien cépage des collines de Conegliano (Verdiso – V. vinifera)

Abstract

Dans le contexte viticole actuel, la prise de conscience que chaque cépage ne trouve son expression qualitative maximale que dans certains terroirs bien définis, assume une signification plus importante vu l’effort unanime fourni pour maximiser le résultat oenologique. Des cépages présentant des potentiels d’adaptation réduits, ont encore plus besoin d’un emplacement territorial précis. C’est ce qui s’est passé pour le cépage Verdiso, ancienne variété de la Prov. de Treviso (Italie du Nord-Est), dont la diffusion s’est réduit progressivement au cours des 50 dernières années, partant de quelques milliers d’hectares jusqu’arriver aujourd’hui à quelques centaines à peine. Cela est dû à la fragilité agronomique du cépage, qui n’assure pas toujours une constance productive, sanitaire et qualitative. La recherche d’une durée de trois ans, à travers l’étude de la réponse qualitative du cépage aux variations de la zone de culture, a tenté de mettre en évidence les caractéristiques du milieu (sol, température, pluie, etc.) qui sont les plus adaptées pour obtenir un résultat qualitatif appréciable. Dans ce but, le territoire de culture actuel a été divisé en 5 sous-zones homogènes quant à leur climat, leur origine, l’évolution et l’état actuel du sol. L’évaluation systématique des paramètres du milieu, de ceux productifs et qualitatifs du raisin et de la qualité organoleptique du vin obtenu, a ammené à circonscrire deux sous-zones qui, par rapport aux autres, se sont distinguées grâce à une meilleure qualité du produit. Ce travail a fourni un exemple clair d’applicabilité de la méthodologie des zonages, afin de sauvegarder et relancer un cépage autoctone destiné sinon à se perdre.

DOI:

Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

Tomasi D., Calò A., Costacurta A., Zanzotto A.

Istituto Sperimentale per la Viticoltura – Viale XXVII Aprile, 26 – 31015 Conegliano (TV) – Italie

Tags

IVES Conference Series | Terroir 2000

Citation

Related articles…

2018 updates on the agronomic performances of fungus resistant wine grapes in Trentino (Italy)

On the market there are several wine grapes which are tolerant to the main fungal diseases. These varieties, commonly defined “resistant”, were developed in the grapevine breeding programs carried out mainly in Germany, France, Hungary and Italy. Some of these cultivars have been included in the national catalogues of wine grape varieties and have sometimes been allowed for specific kinds of wine. The VEVIR project, aimed at the enological evaluation of resistant vines, involves 33 cultivars achieved at the State Institute for Viticulture Freiburg in Germany, the Research Institute of Viticulture and Enology Pecs in Hungary and the Fondazione Edmund Mach S. Michele all’Adige (FEM) in Italy.

Wine yeast species show strong inter- and intra-specific variability in their sensitivity to uv-c radiation

While the trend in winemaking is toward reducing the inputs and especially sulphites, the development of While the trend in winemaking is toward reducing the inputs

Effectiveness of carboxymethyl cellulose (CMC) on tartaric stabilization of cava base wine

Recent EU regulations allow the use of carboxymethylcellulose (CMC) as a stabilization agent in wine. We tested CMC in bases for sparkling wines, which must be stabilized before the second fermentation that raises alcohol concentration by 1,5%.

Different strategies for the rapid detection of Haze‐Forming Proteins (HFPs)

Over the last decades, wine analysis has become an important analytical field, with emphasis placed on the development of new methodologies for characterization and elaboration control.

Identification of aroma markers in amarone wines

Amarone is an Italian red wine produced in the Valpolicella area, in north-eastern Italy. Due to its elaboration with withered grapes, Amarone is a rather unique example of dry red wine. However, there is very limited data so far concerning the volatile composition of commercial Amarone wines, which also undergo a cask aging of 2-4 years before release. The present work aims at characterizing the aroma composition of Amarone and to elucidate the relationships between chemical composition and sensory characters. The analysis of 17 Amarone commercial wines from the same vintage (2015) was carried out by means of Gas Chromatography-Mass Spectrometry (GC-MS) and extracted by Solid Phase Extraction (SPE) and Solid Phase Micro Extraction (SPME). In addition, the sampled wines were subjected to a sensory evaluation in the form of sorting task.RESULTS: 70 volatile compounds were successfully identified and quantified, 30 of which were present in concentrations above their odor thresholds in all the samples. Using the odor activity value (OAV), the compounds that potentially contribute to Amarone perceived aroma are b-damascenone, ethyl and isoamyl acetate, ethyl esters (hexanoate, octanoate, butanoate, 3-methybutanoate), 4-ethyl guaiacol, 3-methylbutanoic acid, dimethyl sulfide (DMS), eugenol, massoia lactone, 1,4-cineol, TDN, cis/trans-whisky lactone. In certain samples, high OAVs were also observed for 4-ethyl phenol and 1,8-cineole.Results from the sorting task sensory analysis showed three clusters formed.