Terroir 2010 banner
IVES 9 IVES Conference Series 9 Vino e paesaggio: materiali per il governo del territorio vitivinicolo. Il piano regolatore delle città del vino

Vino e paesaggio: materiali per il governo del territorio vitivinicolo. Il piano regolatore delle città del vino

Abstract

[English version below]

S’intende per Piano Regolatore delle Città del Vino la metodologia per redigere la parte strutturale dello strumento comunale di governo del territorio. Parliamo, infatti, del principale strumento comunale di governo del territorio, così come è venuto maturando nella riflessione delle Città del Vino, strumento che si misura con la sfida di governare tutto il territorio in modo coerente e sostenibile, a partire dal riconoscimento del valore del “sistema vigneto” e della sua intrinseca fragilità.
In questo senso il PRCV rappresenta, fin dall’inizio (1996, sottoposto successivamente nel 1998 nel corso del 2° Simposio Internazionale sulla zonazione “Vino e territorio”, organizzato dall’Associazione nazionale Città del Vino, nel canovaccio dei temi più specificatamente agronomici), una piccola “rivoluzione copernicana”: il piano non si pone più solo l’obiettivo di trovare un posto alle esigenze urbane, ma soprattutto quello di capire quali esigenze possano essere soddisfatte dal territorio ed a quali condizioni. In altra parole, la “campagna”, in particolare i territori vitivinicoli, diventa centrali per la qualità dello sviluppo economico e per la qualità della vita, i produttori diventano i protagonisti della condivisione di nuove regole di gestione dei territori e ne assumono insieme agli amministratori pubblici la responsabilità.
Nel 2009 è stato completato un aggiornamento della metodologia che riguarda il paesaggio, inteso come un bene fondamentale della collettività, non semplicemente strumentale, ma per questo da studiare, conoscere, promuovere, valorizzare e tutelare laddove occorra. Il lavoro svolto, partendo da una ricognizione attenta delle normative regionali in vigore sulla materia, passando per un esame della situazione e caratteristiche dei Siti legati alla vitivinicoltura Patrimonio dell’Umanità, in cui non figura nessun territorio italiano, arricchisce il metodo con alcune nuove buone pratiche da tenere in considerazione per la pianificazione delle aree rurali.
Se Io studio dell’evolversi del paesaggio agrario mostra quanto la separazione tra utile e bello sia un’astrazione concettuale recentissima, nell’agire della tradizione è impossibile separare ciò che è stato fatto per l’utilità da quanto per la bellezza, tanto le due cose erano indistinguibili, quasi che la tradizione non riuscisse a concepire qualcosa di utile che non fosse anche, e per ciò stesso, bella. E viceversa, trovando nella bellezza un’utilità e nell’utilità una qualità anche estetica.

With the PRCV (Piano Regolatore delle Città del Vino = “Urban Planning of the Wine Cities”) we mean the structural part of the main Municipal tool for the governance of the Italian territories, as it has been framing and developping by the Italian Association of Wine Cities. In this framework, its main challenge is to face the governance of all territories, in a coherent and sustainable way, starting from the recognition of the value of the “vineyard system” and its inner fragi I ity.
In this regard, the PRCV has been representing since the beginning (in 1996 the first draft was released and then presented in 1998 during the “International Symposium of Wine and Territory”) a little “Copernican Revolution”. The Planning doesn’t intend to find a piace for all the urban needs, but it tries to understand which needs could be satisfied from the territory, and how. In other words, the “countryside”, above all the vineyard landscape, is relevant for the quality of the economie development and for the quality of life. The farmers begin to share the new landscape governance rules and responsibilities with the locai public administrations.
In 2009 the revision of this method has been completed, and here the landscape is intended as an essential good for people, not only as a capita! good. For this reason, it has to be studied, known, promoted, improved and preserved where needed.
The work starts from a reconnaissance of the rules of the different Italian Regions, then passes through a careful examination of the situation and the characteristics of the Heritage Sites of UNESCO, in which no Italian wine landscape is present, and in this way it enlarges the method with some good suggestions.
If the agricultural landscape study shows how the discerption between useful and beautiful is a very recent abstraction, in tradition on the contrary, it is impossible to detach what was done for utility from what was done for beauty. It seems that tradition couldn’t even ideate something useful that wasn’t also beautiful. And vice versa, also finding utility in beauty.

DOI:

Publication date: December 3, 2021

Issue: Terroir 2010

Type: Article

Authors

G. Pioli

Presidente “Associazione Nazionale Città del Vino”
Villa Chigi, via Berardenga 29 — 53019 Castelnuovo Berardenga, Italia

Contact the author

Keywords

Piano, regolatore, strutturale, comunale, territorio
Planning, urban, structural, Municipal

Tags

IVES Conference Series | Terroir 2010

Citation

Related articles…

Late season canopy management practices to reduce sugar loading and improve color profile of Cabernet-Sauvignon grapes and wines in the high irradiance and hot conditions of California Central Valley

Global warming is accelerating grape ripening, leading to unbalanced wines from fruit with high sugar content but poor aroma and colour development. Reducing the size of the photosynthetic apparatus after veraison has been shown to delay technological ripeness in cool climates, but methods have not been tested in areas with high irradiance and temperature where fruit exposure could have disastrous effects on berry composition. In this Cabernet-Sauvignon trial, we compared the application of an antitranspirant (pinolene), to severe canopy topping and above bunch zone leaf removal, all performed at mid-ripening, with an untouched control. We monitored the vines weekly by measuring stem water potential, gas exchange, fruit zone light exposure. We sampled berries to measure berry weight, total soluble solids, pH, titratable acidity, and the anthocyanin profile. At harvest, we assessed yield components, measured carbon isotope discrimination, rated sunburn on clusters, and produced experimental wines. We submitted harvest samples to metabolomic profiling through PFP-Q Exactive MS/MS and wines to sensory analysis. Application of the antitranspirant significantly reduced stomatal conductance and assimilation rate but did not affect the stem water potential. Inversely, leaf removal and topping increased water potential but did not affect leaf gas exchange. The late topping was the only treatment able to decrease sugar content (up to 2Bx), increase titratable acidity and pH, and improve anthocyanin content because of lower degradation of di-hydroxylated forms. Late leaf removal above the bunch zone increased lightning conditions in the canopy and produced the most significant damage on fruits. Yield components were not affected. This work suggests that late-season canopy management can effectively control ripening speeds and improve grapes and wines. Still, the effect on grape exposure in a critical time must be well balanced to avoid problems with the appropriate technique.

Effect of fertigation strategies to adapt PGI Côtes de Gascogne production to hot vintage

The development of fertigation could be a possible solution to adapt PGI Côtes de Gascogne (south-western France) wine production to climate change. The goal would be to limit the negative effects of water stress on yield performance expectation (around 15 tons per hectare) and to make the use of fertilizers more efficient. This study aimed to compare the effects of three strategies of water and minerals supply on grapes and wines qualities. Two fertigation practices were compared to a rainfed control which is the current standard of the local grape growing production. The fertilizers (nitrogen and potassium) were (i) fully brought by irrigation pipe during the season, (ii) partially brought by irrigation pipe and partially on the soil or (iii) fully brought on the soil at the beginning of the season for the non-irrigated control (local standard). The trial was run on cv. Colombard trained on spur pruned with vertical shoot positioning system on a sandy-silty-clay soil over the 2020 vintage which was particularly hot for the region. Moderate to strong water deficit appeared during the growing period of the berries and held on after veraison. Irrigation strategies allowed for maintaining grapevine without water deficit and being significantly different from the control water status. Grapevine with fully or partial fertigation strategies produced 25% more yield mainly due to the increase of the bunch weight. Also, the fully fertigation showed the best ratio between yield and maturity and brought 30% less of fertilizers (both nitrogen and potassium) than the two other strategies. Finally, the analysis of aromatic compounds in Colombard wines, varietal thiols family, showed the same level of concentrations for the 3 treatments, confirming that the yield performance did not impact the aromatic potential in this trial.

1H-NMR-based Metabolomics to assess the impact of soil type on the chemical composition of Mediterranean red wines

The aim of this study was to evaluate the effects of different soil types on the chemical composition of Mediterranean red wines, through untargeted and targeted 1H-NMR metabolomics. One milliliter of raw wine was analyzed by means of a Bruker Avance II 400 spectrometer operating at 400.15 MHz. The spectra were recorded by applying the NOESYGPPS1D pulse sequency, to achieve water and ethanol signals suppression. No modification of the pH was performed to avoid any chemical alteration of the matrix. The generation of input variables for untargeted analysis was done via bucketing the spectra. The resulting dataset was preprocessed prior to perform unsupervised PCA, by means of MetaboAnalyst web-based tool suite. The identification of compounds for the targeted analysis was performed by comparison to pure compounds spectra by means of SMA plug-in of MNova 14.2.3 software. The dataset containing the concentrations (%) of identified compounds was subjected to one-way analysis of variance (ANOVA) to highlight significant differences among the wines. The untargeted analysis, carried out through the PCA, revealed a clear differentiation among the wines. The fragments of the spectra contributing mostly to the separation were attributed to flavonoids, aroma compounds and amino acids. The targeted analysis leaded to the identification of 68 compounds, whose concentrations were significant different among the wines. The results were related to soils physical-chemical analysis and showed that: 1) high concentrations of flavan-3-ols and flavonols are correlated with high clay content in soils; 2) high concentrations of anthocyanins, amino acids, and aroma compounds are correlated with neutral and moderately alkaline soil pH; 3) low concentrations of flavonoids and aroma compounds are correlated with high soil organic matter content and acidic pH. The 1H-NMR metabolomic analysis proved to be an excellent tool to discriminate between wines originating from grapes grown on different soil types and revealed that soils in the Mediterranean area exert a strong impact on the chemical composition of the wines.

Grapevine sugar concentration model in the Douro Superior, Portugal

Increasingly warm and dry climate conditions are challenging the viticulture and winemaking sector. Digital technologies and crop modelling bear the promise to provide practical answers to those challenges. As viticultural activities strongly depend on harvest date, its early prediction is particularly important, since the success of winemaking practices largely depends upon this key event, which should be based on an accurate and advanced plan of the annual cycle. Herein, we demonstrate the creation of modelling tools to assess grape ripeness, through sugar concentration monitoring. The study area, the Portuguese Côa valley wine region, represents an important terroir in the “Douro Superior” subregion. Two varieties (cv. Touriga Nacional and Touriga Franca) grown in five locations across the Côa Region were considered. Sugar accumulation in grapes, with concentrations between 170 and 230 g l-1, was used from 2014 to 2020 as an indicator of technological maturity conditioned by meteorological factors. The climatic time series were retrieved from the EU Copernicus Service, while sugar data were collected by a non-profit organization, ADVID, and by Sogrape, a leading wine company. The software for calibrating and validating this model framework was the Phenology Modeling Platform (PMP), version 5.5, using Sigmoid and growing degree-day (GDD) models for predictions. The performance was assessed through two metrics: Roots Mean Square Error (RMSE) and efficiency coefficient (EFF), while validation was undertaken using leave-one-out cross-validation. Our findings demonstrate that sugar content is mainly dependent on temperature and air humidity. The models achieved a performance of 0.65

‘Cabernet Sauvignon’ (Vitis vinifera L.) berry skin flavonol and anthocyanin composition is affected by trellis systems and applied water amounts

Trellis systems are selected in wine grape vineyards to mainly maximize vineyard yield and maintain berry quality. This study was conducted in 2020 and 2021 to evaluate six commonly utilized trellis systems including a vertical shoot positioning (VSP), two relaxed VSPs (VSP60 and VSP80), a single high wire (SH), a high quadrilateral (HQ), and a guyot (GY), combined with three levels of irrigation regimes based on different crop evapotranspiration (ETc) replacements, including a 25% ETc, 50% ETc, and 100% ETc. The results indicated SH yielded the most fruits and accumulated the most total soluble solids (TSS) at harvest in 2020, however, it showed the lowest TSS in the second season. In 2020, SH and HQ showed higher concentrations in most of the anthocyanin derivatives compared to the VSPs. Similar comparisons were noticed in 2021 as well. SH and HQ also accumulated more flavonols in both years compared to other trellis systems. Overall, this study provides information on the efficacy of trellis systems on grapevine yield and berry flavonoid accumulation in a currently warming climate.