Terroir 1996 banner
IVES 9 IVES Conference Series 9 Studio preliminare sulla microzonazione Bioclimatica condotto in un’area viticola collinare

Studio preliminare sulla microzonazione Bioclimatica condotto in un’area viticola collinare

Abstract

[English version below]

La caratterizzazione bioclimatica del territorio rappresenta un elemento sempre più impor­tante per il miglioramento dell’ attività agricola. La conoscenza degli andamenti assunti dai parametri meteorologici puà consentire di individuare le peculiarità dei singoli appezzamenti aziendali, ottimizzando le scelte sia in termini tattici (esecuzione dei più opportuni interventi colturali) che strategici (scelta delle specie o varietà più idonee a valorizzare ciascun am­biente). La temperatura dell ‘aria è uno dei fattori climatici che maggiormente influenza lo sviluppo e la crescita della vite e rappresenta l’elemento centrale per molti studi di zonazione bioclimatica condotti su macro e mesoscala. Considerando che nelle nostre zone la viticoltu­ra di qualità è presente soprattutto in ambienti collinari dove la variabilità termica è accen­tuata, lo studio delle relazioni esistenti fra regime termico, caratteristiche del territorio e comportamenti vegeto-produttivi della vite assume un ‘importanza rilevante soprattutto quando condotto a scala inferiore. Nel presente studio all’interno dell’azienda “Fattoria di Poggio Casciano” (circa 100 ha di superficie con altitudine compresa tra 120 e 270 m s.l.m.), sita nella zona viticola del Chianti in Provincia di Firenze, sono state collocate 24 stazioni termometriche in posizioni rappresentative delle principali caratteristiche topografiche. Sul­la varietà Sangiovese sono stati inoltre rilevati i più importanti parametri fenologici e pro­duttivi. I dati raccolti hanno permesso di analizzare le principali caratteristiche climatiche del territorio considerato, l’influenza che i singoli parametri topografici esercitano sull’an­damento termico e le relazioni clima – pianta.

The bioclimatic classification of territory represents one of the most important point in the improving of agricultural activity. The knowledge of climatic trends can allow to assess the main characteristics of the considered area, thus improving decision making both for strategy (choices of crop, cultivar, level of input required) and tactical aims (day-to-day decision taken during the growing season). Air temperature is one of the most important climatic elements, affecting growth and development of crop and representing the basis of many bioclimatic classifications at meso and macro-scale. However in our regions high quality viticulture is performed in hilly areas, where strong temperature variability can be found. Thus, the analysis of the relationships among temperature patterns, territory characteristics and grapevine cultivation seems to be very important particularly at micro-scale. On these bases, 24 temperature stations were located according to the main topographical characteristics of the “Fattoria Poggio Casciano” farm (about 100 ha with an elevation ranged from 120 to 270 meters above sea level), located in Chianti area close to Florence – Italy. On Sangiovese variety, the main phrenological and productive parameters were monitored during the growing season. Finally, collected data were analyzed to assess the climatic characteristics of the area, the influence of the single topographical parameters on temperature trends, the relationships between climate and crop.

DOI:

Publication date: March 2, 2022

Issue: Terroir 1998

Type: Article

Authors

SIMONE ORLANDINI*, MARCO MANCINI**

*CNR-IATA. Piazzale delle Cascine 18. 50144 Firenze, ltalia
**CeSIA – Accademia dei Georgofili. Logge Uffizi Corti. 50122 Firenze, ltalia

Tags

IVES Conference Series | Terroir 1998

Citation

Related articles…

Aptitude du cépage Chenin à l’élaboration de vins liquoreux en relation avec certaines unités terroirs de base de A.O.C. Coteaux du Layon

Massif and the first sedimentary formations of the western aureole of the Paris Basin. If it is found all over the world (California, Israel, South Africa), it is in this region that it best asserts its identity. It is one of the most interesting grape varieties due to the variety and complexity of the wines it can produce. It can give very dry or very sweet, still or sparkling wines, fresh when young and sublime when ageing, expressing the characteristics of each vintage as much as those of the terroir. The Chenin is a faithful witness of its geographical, geological, pedological and climatic environment; he is the foil of the land. It has strong aptitudes for the production of sweet wines conditioned by overripe grapes often botrytised in the AOC Coteaux du Layon.Massif and the first sedimentary formations of the western aureole of the Paris Basin. If it is found all over the world (California, Israel, South Africa), it is in this region that it best asserts its identity. It is one of the most interesting grape varieties due to the variety and complexity of the wines it can produce. It can give very dry or very sweet, still or sparkling wines, fresh when young and sublime when ageing, expressing the characteristics of each vintage as much as those of the terroir. The Chenin is a faithful witness of its geographical, geological, pedological and climatic environment; he is the foil of the land. It has strong aptitudes for the production of sweet wines conditioned by overripe grapes often botrytised in the AOC Coteaux du Layon.

How different SO2 doses impact amino acid and volatile profile of white wines

Sulphur dioxide (SO2) is a well-established preservative in the wine industry. Its ability to act in different stages of the process as an antioxidant and an antiseptic as main characteristics makes it versatile. However, the need for its reduction or even its replacement has been increasing by the regulatory authorities as well as by the final consumer. To understand the impact of SO2 during ageing on volatile organic compounds (VOCs) and amino acids (AAs) profiles, two white wines (one varietal and one blend) were aged under the same conditions, in the presence of different doses of SO2. After fermentation (t=0), 0, 30, 60, 90 and 120 mg/L of SO2 were applied, wines were kept over lees for 3 months (t=3), then were bottled after 3 (t=6) and 9 (t=12) months.

Impact of GoLo technology on the aroma profile of red and white wines after total and partial dealcoholisation

Wine dealcoholisation has been practised since the early 1900s and has gained importance due to climate change
and shifting consumer preferences for lower-alcohol beverages. Rising temperatures are accelerating grape
ripening, increasing sugar content and, consequently, raising the alcohol strength of wines.

Effect of abiotic stress and grape variety on amino acid and polyamine composition of red grape berries

Vines are exposed to environmental conditions that cause abiotic stress on the plants (drought, nutrient and mineral deficits, salinity, etc.). Polyamines are growth regulators involved in various physiological processes, as in abiotic plant stress responses. Stressful conditions can modify grape’s composition, and in this work, we have focused on studying the effect of abiotic stress on the composition of polyamines and amino acids in grapes. In addition, the effect of grape variety on these compounds has been studied.

Yeast mannoprotein characterization and their effect on Oenococcus oeni and malolactic fermentation

Mannoproteins are released at the end of alcoholic fermentation due to yeast autolysis [1]. It has been described a positive effect of these molecules on lactic acid bacteria growth [2]. The main objective of this work was the characterization of different mannoproteins extracted from active dry yeast (ADY) and the assessment of their effect on Oenococcus oeni and malolactic fermentation (MLF).