Enoforum 2021
IVES 9 IVES Conference Series 9 Enoforum Web 9 Enoforum Web Conference 2021 9 Multidisciplinary assessment of selective harvesting in the Colli Piacentini wine district

Multidisciplinary assessment of selective harvesting in the Colli Piacentini wine district

Abstract

Within-field variability can be managed through Precision Viticulture (PV) protocols aiming at identifying homogeneous zones and addressing site-specific operations including selective harvesting (SH). Several authors demonstrated SH profitability in extensive viticulture while few information is available within the Italian context. Based on a NDVI-derived vigor map (5 m resolution), a 3-year study was performed in a mature Barbera vineyard from Colli Piacentini. Ground-truthing of 3 vigor zones encompassed soil properties, canopy growth, yield and fruit composition. Experimental wines were made and sensory analysis performed for comparing vigor classes. A professional-targeted survey aimed at explaining technical and economic potential of SH. Results show higher soil fertility and water holding capacity in high vigor (HV) leading to higher leaf area (3.99 vs 2.67 m2/vine recorded in low vigor (LV)), excessive crop load (6.99 vs 3.37 kg/vine) and incomplete ripening (TSS: 20.7 vs 24.9 °Brix; TA: 9.72 vs 7.71 g/L; anthocyanins: 0.82 vs 1.60 g/kg). When compared to HV, LV wines showed higher color and purple hues, full body, more balance and, occasionally, higher astringency. More than 70% of the professionals asserted within-field variability can affect economic performance of the wineries demonstrating “high” or “very high” interest on SH. SH might be very profitable for growers and even more for wine producers, however the majority of the interviewed estimated wineries will be much less inclined to differentiate fruit pricing depending on different enological potential at the field scale. SH can boost exploitation of vineyard variability in the Colli Piacentini area and grapes from the same parcel used for producing young sparkling as well as barrel-aged still wines.

DOI:

Publication date: April 23, 2021

Issue: Enoforum 2021

Type: Article

Authors

GATTI Matteo1*, MARTINA Francesca1, SQUERI Cecilia1, GARAVANI Alessandra1, VERCESI Alberto1, CANALI Gabriele2, PONI Stefano1

1 Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Piacenza, Italy
2 Department of Agri-Food Economics, Università Cattolica del Sacro Cuore, Piacenza, Italy

Contact the author

Tags

Enoforum 2021 | IVES Conference Series

Citation

Related articles…

Zonage vitivinicole: recherches et considérations initiales sur une proposition de “nouvelle” méthodologie d'”évaluation de la qualité” du produit tel qu’élément base pour le zonage aussi

Si on part de l’introduction que l’activité vitivinicole maintenant plus que jamais doit être une activité d’entreprenariat introduite de mieux en mieux sur le territoire et donc effectuée pour rendre maximal le Profit
Read More

Zonazione dell’area viticola doc durello

Il lavoro di zonazione riveste un ruolo importante per capire le potenzialità e la vocazionalità di una specifica area viticola. La viticoltura dovrebbe essere vista in funzione dell’obiettivo enologico che si vuole realizzare e quindi particolare importanza riveste il risultato delle vinificazioni delle uve provenienti dai vigneti delle diverse aree della zona di produzione oggetto d’indagine. La zonazione dell’area a DOC Monti Lessini Durello ha preso in esame la varietà “Durella”, vitigno autoctono del territorio, che rappresenta la maggior parte della produzione vitivinicola della zona.

Read More

Proposta per un parco produttivo agrovitivinicolo dei “colli piacentini”

Le Dipartimento di Progettazione dell ‘Architettura del Politecnico di Milano et l’Istituto di Viticoltura della Facoltà d’Agraria di Piacenza dell’Università Cattolica del Sacra Cuore, ont elaboré une proposition pour réaliser, dans l’aire de colline de la province de Piacenza, un Parco Produttivo Agrovitivinicolo.

Read More

Quantifying water use diversity across grapevine rootstock-scion combinations

Vines require proper light levels, temperature, and water availability, and climate change is modifying these factors, hampering yield and quality. Despite the large diversity of rootstocks, varieties, and clones, we still lack knowledge of their combined effects and potential role in a warmer and dryer future. Therefore, we aim to characterize some of the existing diversity of rootstocks and genotypes and their interaction at the eco-physiological level, combining stomatal conductance (gs) and chlorophyll a fluorescence analysis.

Read More

Extreme vintages affect grape varieties differently: a case study from a cool climate wine region

Eger wine region is located on the northern border of grapevine cultivation zone. In the cool climate, terroir selection is one of the foundations of quality wine making. However, climate change will have a significant impact on these high value-added vineyards. This study presents a case study from 2021 and 2022 with the investigation of three grape varieties (Kadarka, Syrah, Furmint). The experiment was conducted in a steep-sloped vineyard (Nagy-Eged hill) with a southern exposure.

Read More