terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Water availability at budbreak time in vineyards that are deficitary irrigated during the summer: Effect on must volatile composition

Water availability at budbreak time in vineyards that are deficitary irrigated during the summer: Effect on must volatile composition

Abstract

In recent years, Mediterranean regions are being affected by marked climate changes, primarily characterized by reduced precipitation, greater concurrence of temperature extremes and drought during the growing season, and increased inter-annual variability in temperatures and rainfall. Generally, high-quality red wines need moderate water deficit. Hence, irrigation may be needed to avoid severe vine water stress occurring in some vintages and soils with low holding capacity. The aim of this work was to evaluate the effects of soil recharge irrigation in pre-sprouting and summer irrigation every week (30 % ETO) from the pea size state until the end of ripening (RP) compared to exclusively summer irrigation every week (R) in the same way that RP, on must volatile composition at harvest. The study has been carried out in 2021-2022 with four red varieties in different Spanish wine regions: Garnacha Tinta (Badajoz), Tempranillo (Valladolid), Syrah (Albacete) and Mencía (Lugo). The effects of irrigation frequency on must volatile composition have been evaluated through GC-MS.

In 2021 season, the total volatile composition (sum of free and glycosidically fractions) showed a trend to increase in R vs RP in Garnacha and Mencía cultivars due to the bound-glicosidically fraction. In contrast, Syrah cultivar showed a higher total concentration in RP than R. In 2022, a higher total concentration was observed in RP vs R for all cultivars with exception of Garnacha. These increases were motivated by bound-glicosidically fraction except to Tempranillo cultivar where the free fraction increased in RP vs R. In general, in 2022 season the soil recharge irrigation had a positive effect on musts volatile concentration. The results showed a higher effect of the variety and season than the irrigation strategy.

Acknowledgements: Project PID2019-105039RR-C4 for financing. We also thank to ICVV analytical service (Drs. Fernández, Morata and Pérez).

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Vilanova M.1,6, Costa B.S.1, Uriarte D., Moreno D., Yuste J., Martínez-Porro D., Montoro A., Torija I., Cancela J.J.5,6

1 Instituto de Ciencias de la Vid y el Vino, 26007 Logroño (Spain)
2 Centro de Investigaciones Científicas y Tecnológicas de Extremadura, 06187 Badajoz (Spain)
3 Instituto Tecnológico Agrario de Castilla y León, 47071 Valladolid (Spain)
4 Instituto Técnico Agronómico Provincial, 02007 Albacete (Spain)
5 Universidade de Santiago de Compostela – EPSE, 27002 Lugo (Spain)
6 CropQuality: Crop Stresses and Their Effects on Quality, Associate Unit USC-CSIC (ICVV)

Contact the author*

Keywords

volatiles, deficit irrigation, Vitis vinifera

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Foliar application of urea improved the nitrogen composition of Chenin grapes

The nitrogen composition of the grapes directly affects the developments of alcoholic fermentation and influences the final aromatic composition of the wines. The aim of this study was to determine the effect and efficiency of foliar applications of urea on the nitrogen composition of grapes. This study was carried out during 2023 vintage and in the Chenin vineyard located in Estacion Experimental Mendoza (Argentina). Three urea concentrations 3, 6 and 9 Kg N/ha (C1, C2, and C3, respectively) and control (T) were applied in this vineyard at veraison.

Read More

Applicability of spectrofluorometry and voltammetry in combination with machine learning approaches for authentication of DOCa Rioja Tempranillo wines

The main objective of the work was to develop a simple, robust and selective analytical tool that allows predicting the authenticity of Tempranillo wines from DOCa Rioja. The techniques of voltammetry and absorbance-transmission and fluorescence excitation emission matrix (A-TEEM) spectroscopy have been applied in combination with machine learning (ML) algorithms to classify red wines from DOCa Rioja according to region (Alavesa, Alta or Oriental) and category (young, crianza or reserva).

Read More

New oenological criteria for selecting strains of Lachancea thermotolerans for wine technology

The study conducted various fermentations of different grape juices using various strains of Lachancea thermotolerans and one strain of Saccharomyces cerevisiae. Because of the new conditions caused by climate change, wine acidity must be influenced as well as the volatile profile. Non-Saccharomyces yeasts such as L. thermotolerans are real options to mitigate the impact of climate change in wine production.

Read More

Inert gases persistence in wine storage tank blanketing

It is common to find tanks in the winery with wine below their capacity due to wine transfers between tanks of different capacities or the interruption of operations for periods of a few days. This situation implies the existence of an ullage space in the tank with prolonged contact with the wine causing its absorption/oxidation. Oxygen uptake from the air headspace over the wine due to differences in the partial pressure of O2 can be rapid, up to 1.5 mL of O2 per liter of wine in one hour and 100 cm2 of surface area1 and up to saturation after 4 hours.

Read More

Reduction of the height of the canopy in fruit set and in pea size: vegetative, productive and maturation effects, in cv. Verdejo

Global warming is accelerating the technological ripening of the grape, with a loss of acidity, which requires that vineyard management can delay ripening to avoid it. The source-sink relation is essential for grape ripening, since it affects the distribution of photosynthates and substances derived from plant metabolism. A work is proposed to know the response of the vineyard to the drastic reduction of the foliar surface by trim down the shoots in cv.

Read More