terclim by ICS banner
IVES 9 IVES Conference Series 9 GiESCO 9 First characterization of Torrontés Riojano in la Rioja, Argentina: impact of pruning intensity on vine vigor and grape production 

First characterization of Torrontés Riojano in la Rioja, Argentina: impact of pruning intensity on vine vigor and grape production 

Abstract

Context and purpose of the study – Pruning is one essential vineyard management activity whose main purpose is to regulate plant growth and vigour, modulating berry size, and consequently, wine quality. In Chilecito, La Rioja Province, Argentina, Torrontés Riojano stands as the only autochthonous variety for winemaking, yielding golden and aromatic berries and distinctive muscatel-tasting wines. This white cultivar, resulting from the natural cross between Moscatel de Alejandría x Criolla Chica, is traditionally trained in “parral” (horizontal trellis system), aimed to manage vigorous canopies.  This project constitutes the first study on the influence of pruning intensity on Torrontés Riojano growth habit and berry quality.

Material and methods – In Chilecito, Nonogasta and Colonias de Malligasta are two Torrontés Riojano growing sites with long productive traditions and contrasting edaphoclimatic conditions. In this context, three pruning intensities were tested in two vineyards per site, i.e. two properties in Nonogasta and two properties in Colonias de Malligasta. Treatments were: control (regular pruning), short (leaving 60% of buds with respect to control), and long (leaving 80% of buds with respect to control). Number of bunches, bunch weight, number of buds, pruning weight and yield were assessed in the 2021 and 2022 seasons. Preliminary data were analyzed by ANOVA and PCA. Berry and wine chemical and oenological analyses are still to be completed.

Results – Preliminary results from the 2021 season showed significant differences between sites and among pruning treatments for pruning weight. For number of bunches, significant differences were observed among long vs. short and long vs. control in one vineyard from Nonogasta. Average bunch weight and yield, showed no significant differences among pruning treatments. However, significant differences in yield were observed between sites. The second growing season and further analyses should confirm and complete our results. Berry and wine analyses will provide insight into metabolic, aromatic and oenological traits determining possible pruning and site effects on Torrontés Riojano. It might be possible that in Torrontés Riojano horizontally trained in “parral”, contrasting sites result in stronger effects than the tested pruning intensities.

DOI:

Publication date: July 5, 2023

Issue: GiESCO 2023

Type: Poster

Authors

Rocío MIRANDA1, Mariela ASSOF2, Sonia SILVENTE1, Inés HUGALDE2

1UNdeC, Chilecito, La Rioja, Argentina
2INTA Luján de Cuyo, Mendoza, Argentina

Contact the author*

Keywords

Torrontés Riojano, pruning, horizontal trellis system, vigor, berry traits

Tags

GiESCO | GIESCO 2023 | IVES Conference Series

Citation

Related articles…

Climats: a model of terroir-based winegrowing recognized by UNESCO

In Burgundy, a climat has nothing to do with the weather but accurately designates a named vine plot, often centuries-old, which produces a singular wine. This wine is the combination of history, the natural environment (relief, type of soil, exposure to the sun), a grape variety and know-how going back thousands of years. The grapes of each climat are harvested separately and the wine is made from a single grape variety and has a unique name featured on the bottle. Romanée conti, clos de vougeot, montrachet, musigny, corton…

Lean management to improve sustainability in wine sector: an exploratory study in the Prosecco DOC appellation

The contemporary wine sector confronts a formidable array of challenges, including burgeoning production costs and the constricted availability of natural resources. Heightened consumer awareness regarding sustainability issues further compounds these pressures, compelling companies to adopt more judicious resource utilization strategies. In response to these imperatives, there is a growing recognition of the need to overhaul production methodologies within the wine industry with a view to minimizing inputs and eliminating waste.

Emosensory profile and chemical characterization of wine vinegar from the Douro and Rioja demarcated regions

Wine vinegars have a tangy flavor and are versatile in cooking. They’ve been used since the neolithic period and are now used as microbial inhibitors and acidifiers. They’re low in calories, have antioxidants, and have a long shelf life, but quality may decrease after opening. The objective of this study focuses on the physical-chemical, sensory, and emotional characterization of wine vinegar samples from the douro demarcated region and la rioja. In total, 22 samples of wine vinegar were analyzed at the time of opening.

Where the sky is no limit – the transformation of wine marketing through text-to-video generation AI models

The introduction of ai-driven tools in digital content creation represents a significant shift in the landscape of marketing, particularly for industries reliant on rich visual storytelling such as the wine sector. The development of ai models like openai’s sora, runway’s gen-2 or google’s lumiere, which can generate realistic video content from textual descriptions, offers promising new avenues for enhancing brand narrative and consumer engagement. This research explores the potential of text-to-video (t2v) ai models to revolutionize wine marketing by creating dynamic, engaging content that captures the essence of vineyards and their products without the need for traditional video production processes.

A century of evolution of the rules relating to grape varieties  in the regulation of French wine AOCs

To characterize a wine, the most frequently used criteria describe its color, its origin, the grape varieties from which they come, or even for white wines its residual sugar content (dry, semi-dry, sweet). In france, the system of appellations of origin set up in 1919 was initially based solely on the notoriety and origin of the wines. But given the unfavorable consequences that this lack of details generated, the public authorities quickly integrated in 1927 into the “capus” law criteria for access to designations of origin, relating to the specific characteristics of the soils of the vineyards and the grape varieties used, in particular exclusion of interspecific hybrid varieties. In 1935 the creation of the aoc system confirmed the interest in precisely defining all the production conditions that must be implemented to be able to claim the benefit of an aoc, and grape varieties were an essential condition for acquisition.