Terroir 1996 banner
IVES 9 IVES Conference Series 9 Efectos del deshojado y de su combinación con el aclareo de Racimos en los componentes básicos de la producción y del Mosto, sobre cv. Tempranillo en la D.O. Ribera del Duero

Efectos del deshojado y de su combinación con el aclareo de Racimos en los componentes básicos de la producción y del Mosto, sobre cv. Tempranillo en la D.O. Ribera del Duero

Abstract

[English version below]

Las técnicas de manejo del canopy de la vid pueden favorecer la adaptación de los sistemas de conducción a diversas condiciones de cultivo para obtener uva de calidad. Con este objetivo se desarrolló a lo largo de 3 años un ensayo en secano con la variedad Tempranillo conducida en espaldera, en la región vitivinícola de Denominación de Origen Ribera del Duero (España).
Se estudiaron los efectos del deshojado basal (aplicado en la fase de maduración, una vez pasado el envero), suprimiendo unas 4 hojas de la base de los pámpanos, y de su combinación con el aclareo de racimos (suprimiendo el 35 % de los racimos existentes en la cepa en el momento del envero) en el rendimiento, en el desarrollo vegetativo y en la composición del mosto.
Se ha observado que la combinación del aclareo con el deshojado redujo el rendimiento final en uva sólo un 20%, debido a la compensación producida por el aumento del peso de la baya. Dicho tratamiento presentó una tendencia a incrementar ligeramente el peso de madera de poda.
La concentración de azúcares en el mosto puede verse beneficiada por el deshojado basal, pero su combinación con el aclareo de racimos mostró un efecto muy claro a aumentar el grado alcohólico probable del mosto. La acidez total puede ser reducida por el deshojado, pero sobre todo cuando se practica junto con el aclareo de racimos.
En general, los efectos del aclareo de racimos en el envero combinado con el deshojado favorecen la evolución de la maduración, a costa de una reducción del rendimiento en uva, mientras que los efectos del deshojado simple en la variedad Tempranillo, a través de una reducción de los ácidos, dependen de las condiciones ambientales anuales en zonas como la D.O. Ribera del Duero.

The techniques of grapevine canopy management can help the training systems to become adapted to different growth conditions in order to improve the quality of the grapes. Focused on this objective, a trial was carried out over 3 years in the A.O. Ribera del Duero with the variety Tempranillo grown under non-irrigation conditions and trained as a vertical trellis system.
We have studied the effects of the basal leaf removal (in the ripening period, after veraison), taking out 4 leaves from the base of shoots, and of its combination with the cluster thinning (removing 35 %of vine clusters at veraison) in yield, vegetative development and must composition.
It was observed that the combination of cluster thinning and leaf removal reduced the final yield by only 20 %, due to the compensation caused by the increase of berry weight. This treatment showed a tendency to lightly increase the pruning weight.
Sugar concentration can be increased by the basal leaf removal, but the combination with the cluster thinning exhibited a clear effect to increase the probable alcoholic degree. Total acidity can be reduced by leaf removal, but basically in combination with cluster thinning.

DOI:

Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

Yuste, J.*, Rubio, J.A.*, Baeza, P.** and Lissarrague, J.R.**

*Servicio de Investigación Agraria de Castilla y León. Aptdo. 172. 47080 – Valladolid
** Dpto. Producción Vegetal. E.T.S.I. Agrónomos. Univ. Politécnica. 28040 – Madrid

Tags

IVES Conference Series | Terroir 2000

Citation

Related articles…

Monitoring small-scale alcoholic fermentations using a portable FTIR-ATR spectrometer and multivariate analysis

Although some wine production processes still rely on post-production evaluation and off-site laboratory analysis, the new winemaking industry is aware of a need for a better knowledge of the process to improve the properties of the final product. Thus, more and more wineries are interested in incorporating quality-by-design (QbD) strategies instead of postproduction testing because of the possibility to early detect deviations in fermentation or any other wine process. This would allow to detect unwanted situations and eventually to ‘readjust’ the process, thus minimizing rejects.

Relationships between vine isohydricity and changes of fruit growth and metabolism during water deficit

The frequency of water deficits is increasing in many grape-growing regions due to climate change.

Towards a European data basis based of advanced multi-isotopic signatures and artificial intelligence: the wine in blue project

Major and trace elements are essential for the development of grapes used for the wine. They are primarily originating from the soil. Some elements are also seldomly added during the wine making process. Therefore, the largest spectrum of major, trace and ultra-trace elements in the final wine product is a good signature of its geographical origin. In the frame of the European tracewindu, we have developed a very original multi-isotopic dilution method using triple quadrupole icp/ms.

Territorial delimitation of viticultural “Oltrepo Pavese (Lombardy)” using grape ripening precocity

L’Oltrepò Pavese est une zone de collines de la Lombardie, région située au nord de l’Italie avec un vignoble qui s’étend sur près de 15 000 ha. Cette zone représente la plus grande aire de production de la région et une des A.O.C. les plus étendues de tout le pays. Les cépages les plus cultivés, même historiquement, sont autochtones : la Barbera et la Croatina utilisés pour la production de vin rouge «Oltrepò» et le Pinot noir pour la production de vins mousseux. Pour le zonage viticole de cette A.O.C., il a été pris en considération: le climat, les sols, les caractéristiques viti-vinicoles.

austrianvineyards.com: online viewer of all designations of Austrian wine

To digitally record and present all the origins of Austrian wines in the same perfect and clear way was the motivation for the Austrian Wine Marketing Board (Austrian Wine) to start with the project in 2018. In June 2021 the results were presented to the public in an online viewer showing all the designations of Austrian wine, available at https://austrianvineyards.com in a largely barrier-free manner. The online viewer provides tailored individual maps fitted to the respective zoom level. The smallest unit of wine-origins in Austria is called Ried and is displayed in a plot-specific manner highlighting areas under vine. Information on the Ried include administrative district, winegrowing municipality, cadastral municipality, large collective vineyard site, specific winegrowing region, generic winegrowing region, winegrowing area and, in many cases, an illustrative picture. Complementary data on the size, elevation (minimum-maximum), orientation (in 8 sectors plus flat) and gradient (minimum, maximum, average) are based on the area under vine according to the EU’s Integrated Administration and Control System. Additional information covers climate data. The diagrams are taken from the monthly breakdown of data in the annals of the Central Institute for Meteorology and Geodynamics, Austria provide a display of values for air temperature, precipitation, and sunshine hours for the reference year and the long-term average. Seasonal aggregated data on temperature, precipitation, and sunshine hours complete the display. Short descriptions with emphasis on geology and soil, field name in historical maps, etymology of the denomination, and main planted variety complements the available information for the main designations in the online viewer. These descriptions are compiled by winegrowers, geologists, historians, and journalists. All the information and data can be extracted to a pdf-file. Printed vineyard maps are also available. Missing content regarding wine origins in Styria will be completed in winter 2021/22.