terclim by ICS banner
IVES 9 IVES Conference Series 9 The role of vine trunk height in delaying grape ripening: insights for viticultural adaptation strategies

The role of vine trunk height in delaying grape ripening: insights for viticultural adaptation strategies

Abstract

Global changes in temperature patterns necessitate the development of viticultural adaptation strategies. One promising approach involves modifying the training system and elevating trunk height. This study explored the potential of raising the vine trunk as an adaptive strategy to counteract the effects of increasing temperatures and delay ripening. Thermal conditions, radiation levels, and must composition were measured at different heights (10 and 150 cm) in a commercial vineyard of the minority variety Maturana Blanca, trained on a vertical cordon. The results showed a significant delay in grape maturation in the upper part of the vertical cordon, characterized by lower Brix levels and higher titratable acidity than the lower section. These outcomes can be partly explained by observed variations in the Winkler index measured inside the canopy, indicating a 15.59% reduction in the upper zone. However, the radiation percentage in the fruiting zone was significantly higher in the upper part of the vine. In summary, the change in trunk height significantly impacted grape ripening. The study underscores vineyard management’s importance in improving wine quality and preserving its typicity. These findings open avenues for future research, guiding potential adjustments in viticultural practices under evolving environmental conditions.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Miguel Puelles1*, Pedro Balda2, Andreu Mairata1, David Labarga1, Álvaro Galán1, Fernando Martínez de Toda1, Alicia Pou1

1Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de la Rioja, Universidad de La Rioja), Finca La Grajera, Ctra. Burgos Km. 6, 26007 Logroño, Spain
2Universidad de La Rioja, c/ Madre de Dios, 51, 26006 Logroño, Spain

Contact the author*

Keywords

climate change, temperature gradient, viticulture, training system, vertical cordon

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Tracking innovations for glyphosate-free in sloppy or terraced vineyard

Context and purpose of the study. Reducing pesticide use such as glyphosate, is a key challenge to support sustainability of viticulture systems and resilience of vineyard.

Read More

Modernizing wine legislation for a resilient and competitive industry: lessons from Republic of Moldova’s legal and policy reforms

The evolution of Republic of Moldova’s wine industry offers a compelling case study in how legal harmonization and institutional reform can catalyze the transformation of a national wine sector.

Read More

Différenciation de parcelles de Chenin du Val de Loire, a l’aide de l’etude des flores fongiques des raisins, en utilisant l’outil DGGE

Depuis le millésime 2002, une étude est menée sur la diversité de la flore fongique de parcelles du cépage chenin, situées essentiellement sur les appellations de Vouvray et Montlouis ; deux appellations séparées par le fleuve nommé la Loire. Les parcelles se situent dans des conditions pédoclimatiques différentes, qui se retrouvent au travers des suivis de maturité et l’état sanitaire.

Read More

Digital PCR: a tool for the early detection of brettanomyces in wine

Brettanomyces bruxellensis is found in various ecological niches, but particularly in fermentative processes: beer, kombucha, cider and wine. In the oenological sector, this yeast is undesirable, as it can produce ethyl phenols, thus altering wine quality. These compounds are characterized by stable or horse-sweat aromas, unpleasant for consumers.

Read More

What about oxygen transfer during wine aging in barrels?

During wine aging, several complex phenomena of gas transfer take place in barrels due to the wine/oak contact. The efficiency of this gas transfer varies according to oak wood’s intrinsic physical properties. This research aims to better understand oxygen transfer phenomena through dry oak staves and especially through stave gaps, in order to reevaluate the importance of barrel-making on a barrel’s supply of oxygen. Experimentation was based on the development of an innovative permeameter of laboratory scale, for which the principal operating conditions concerning applied pressure, the choice of liquid phase/gas phase, and the grain type of oak are taken into account and investigated. With a specially developed tightening system, the existing pressure at stave gaps in a barrel could be reproduced on a laboratory scale in order to estimate its influence on oxygen transfer efficiency.

Read More