Terroir 2016 banner
IVES 9 IVES Conference Series 9 Effects of future climate change on grape quality: a case study for the Aglianico grape in Campania region, Italy

Effects of future climate change on grape quality: a case study for the Aglianico grape in Campania region, Italy

Abstract

Water deficits limit yields and this is one of the negative aspects of climate change. However, this applies particularly when emphasis is on biomass production (e.g. for crops like maize, wheat, etc.) but not necessarily for plants where quality, not quantity is most relevant. For grapevine water stress occurring during specific phenological phases is an important factor when producing good quality wines. It induces in the red wine the production of anthocyanins and aroma precursors. On this base, in some terroirs the future climate constrictions could represent an opportunity to increase winegrowers’ incomes.

This study was carried out in Campania region (Southern Italy), an area well known for high quality wine production. Growth of the Aglianico grapevine cultivar, with a standard clone population on 1103 Paulsen rootstocks, was studied on two different types of soil: Calcisols and Cambisols. The agro-hydrological model SWAP was calibrated and applied to estimate soil-plant water status at the various crop phenological phases for three vintages (2011-2013). Then, the Crop water stress index (CWSI), as estimated by the model, was related to physiological measurements (e.g. leaf water potential), grape bunches measurements (e.g. sugar content) and wine quality (e.g. tannins). For both soils, the correlation between grape quality characteristics and CWSI were high (e.g. 0.895 with anthocyanins in the skins).

Finally, the model was applied to future climate conditions (2021-2051) obtained from statistical downscaling of Global Circulation Models (AOGCM) in order to estimate the effect of the climate on CWSI and hence on grape quality. Results show that in the study area the effects of climate change on grape and wine quality are not expected to be significant for Aglianico grapevine when grown on Calcisols and Cambisols.

Download the PDF

DOI:

Publication date: June 23, 2020

Issue: Terroir 2016

Type: Article

Authors

A. Bonfante (1), S.M. Alfieri (2), R. Albrizio (1), A. Basile (1), R. De Mascellis (1), A. Gambuti (3), P. Giorio1, G. Langella (1), P. Manna (1), E. Monaco (1), A. Erbaggio (4), L. Moio (3) and F. Terribile (3)

(1) National Research Council of Italy (CNR), Institute for Mediterranean Agricultural and Forestry Systems (ISAFOM), Ercolano (NA), Italy
(2) Delft University of Technology, Delft, The Netherlands, 3 University of Naples Federico II, Department of Agriculture, Portici (NA), Italy
(3) Agronomist freelancer

Contact the author

Keywords

climate change, grape quality, SWAP, Crop Water Stress Index (CWSI), Leaf Water Potential (LWP), Calcisols, Cambisols

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

Determination of target compounds in cava quality using liquid chromatography. Application of chemometric tools in data analysis

According to the Protected Designation of Origin (PDO), Cava is protected in the quality sparkling wines made by the traditional Champenoise method were the wine realize a second fermentation inside the own bottle1. Geographical and human peculiarities of each bottle are the main way for the final quality2. The aim of this study is to find correlations and which target compounds are the most representative of the quality of two different grape varieties, Pinot Noir and Xarel·lo. The quality of these two types of grapes is being studied for each variety by a previous classification of the vineyard made by the company who provided the samples (qualities A,B,C,D, being A the better one and D the worst one). The target compounds studied are organic acids and polyphenols. The methodology for the determination of organic acids is HPLC-UV/vis and for some of them the enzymatic methodology.

Read More

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.

Read More

Acceptance of fungus-resistant grape varieties from the perspective of producers and consumers in Germany

Fungus-resistant grape varieties (frgv) are an important field of research in viticulture, as they represent a way of reducing the use of copper-containing pesticides and thus minimising the environmental impact. The literature suggests that resistant grape varieties are a promising solution to the problem of using copper-containing pesticides in viticulture and that their quality has improved in recent years. However, there are still challenges in the acceptance and dissemination of FRGV by wine producers and consumers.

Read More

Cépage “Baga” région Bairrada. 2- De la conduite traditionnelle jusqu’au système ‘Lys’

Dans la Région de la Bairrada (Litoral-Centre du Portugal), on a étudié au 1999, l’influence des différents systèmes de conduite sur le cépage rouge “Baga”, le plus important de la Région.

Read More

Vineyard nutrient budget and sampling protocols

Vineyard nutrient management is crucial for reaching production-specific quality standards, yet timely evaluation of nutrient status remains challenging. The existing sampling protocol of collecting vine tissue (leaves and/or petioles) at bloom or veraison is time-consuming. Additionally, this sampling practice is too late for in-season fertilizer applications (e.g. N is applied well before bloom). Therefore alternative early-season protocols are necessary to predict the vine nutrient demand for the upcoming season. The main goals of this project are to 1) optimize existing tissue sampling protocols; 2) determine the amount of nutrients removed at the end of the growing season.

Read More