Issue |
E3S Web Conf.
Volume 50, 2018
XII Congreso Internacional Terroir
|
|
---|---|---|
Article Number | 01035 | |
Number of page(s) | 4 | |
Section | Componentes de los Terroir | |
DOI | https://doi.org/10.1051/e3sconf/20185001035 | |
Published online | 22 August 2018 |
Estado hídrico y actividad fisiológica en cv. Cabernet Sauvignon: respuesta a la aplicación de distintas dosis de riego
Water status and physiological activity in cv. Cabernet Sauvignon: response to application of different irrigation doses
1
Instituto Tecnológico Agrario de Castilla y León,
47071
Valladolid,
España
2
Actualmente: actividad vitivinícola externa,
España
La producción y la calidad de la uva en las zonas de clara escasez hídrica dependen del aporte de agua de riego. A lo largo del periodo 2012-2014 se estudió la respuesta hídrica y fisiológica a 3 tratamientos de régimen hídrico: secano (P0), riego del 25% ETo (P1) y riego del 50% ETo (P2), aplicado desde tamaño guisante hasta vendimia. El ensayo se llevó a cabo con cv. Cabernet Sauvignon sobre portainjerto 110R, plantado en 2004 y conducido en espaldera en cordón Royat bilateral, con marco de plantación de 2,2 m x 1,2 m, en Valladolid. La variación de dosis de riego generó valores notablemente menos negativos de potencial hídrico, así como valores de los parámetros básicos de intercambio gaseoso significativamente más altos, en el tratamiento regado con mayor dosis que en el de menor dosis, y a su vez en éste que en el no regado, tanto a las 9 como a las 12 hs. Las diferencias entre tratamientos fueron estadísticamente significativas en general, aunque se observaron algunas excepciones, más frecuentes entre el tratamiento regado con menor dosis y el no regado, que variaron en fecha, hora y parámetro fisiológico. La capacidad de discriminación entre tratamientos de riego a través del potencial hídrico se ve bien reflejada en la actividad fisiológica del viñedo, con una tendencia creciente segûn aumenta el aporte de agua, lo cual debe servir para orientar el riego del viñedo.
Abstract
Grapevine yield and quality in areas of remarkable hydric scarcity depend on irrigation. Throughout the period 2012-2014, the water status and physiological vine response to 3 treatments of water regime was studied: rainfed (P0), irrigation of 25% ETo (P1) and irrigation of 50% ETo (P2), from pea size state until harvest. The trial was developed with vines of cv. Cabernet Sauvignon onto 110R rootstock, planted in 2004 and vertically trellised as a bilateral Royat cordon. The vine distances were 2.2 m x 1.2 m. It was located in Valladolid (Spain). The variation of irrigation doses generated significantly less negative values of water potential, as well as values of the basic parameters of gas exchange significantly higher, in the irrigated treatment with a higher dose than in the lower dose treatment, and in the latter than in that not watered, both at 9 and at 12 solar hours. The differences between treatments were statistically significant in general, although some exceptions were observed, more frequent between the irrigated treatment with lower dose and the non-irrigated treatment, which varied in date, time and physiological parameter. The discrimination capacity between irrigation treatments through the water potential is well reflected in the physiological activity of the vineyard, with an increasing trend as the water supply increases, which should be used to focus the irrigation of the vineyard.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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