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Publication
Efecto del riego deficitario en los cultivares Touriga Nacional y Touriga Franca (Vitis vinifera L.) en la Región Demarcada del Duero (Portugal)
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Advisor(s)
Abstract(s)
El principal factor ambiental que limita la producción de uvas en cantidad y calidad en
la mayoría de las regiones productoras de vino del mundo es la falta de agua en determinados
momentos de su ciclo de cultivo. Así, se están buscando estrategias para mitigar el efecto de la
sequía. El riego deficitario (DI) es una de las estrategias que mejores resultados proporciona. Con
este tipo de riego se pretende aportar agua en momentos puntuales y en dosis bajas. Este estudio fue
realizado durante el año 2017 en una viña comercial situada en la “Região Demarcada do Douro”
(Portugal), en dos cultivares, Touriga Nacional y Touriga Franca. Se usó el riego deficitario, 25% de
la evapotranspiración de referencia, en comparación con el secano. El objetivo fue evaluar el efecto
del riego deficitario en los parámetros fisiológicos y agronómicos de las plantas así como en la
producción y la calidad de las uvas y mostos. Los resultados obtenidos indican un gran estrés
hídrico en las plantas de secano, reduciéndose la conductancia estomática y la fotosíntesis neta. El
riego aumento la producción de uva sin reducir significativamente los parámetros cualitativos del
mosto.
The main environmental factor that limits the production of grapes in quantity and quality in most of the wine producing regions of the world is the lack of water at certain times of the growth cycle of the vine. Thus, strategies are being sought to mitigate the effect of the drought. Deficit irrigation (DI) is one of the strategies that provide the best results. This type of irrigation is intended to provide water at specific times and in low doses. The experiment was carried out during the year 2017 in a commercial vineyard located in the “Região Demarcada do Douro” (Portugal), in two cultivars, Touriga Nacional and Touriga Franca. The deficit irrigation was used, 25% of the reference evapotranspiration, compared to the rainfed. The aim of this work was to evaluate the effect of deficit irrigation on the physiological and agronomic parameters of the grapevines as well as the yield and quality of the grapes and must. The results indicated great water stress in the rainfed plants, reducing the stomatal conductance and the net photosynthesis. The irrigation increased the yield without significantly reducing the qualitative parameters of the must.
The main environmental factor that limits the production of grapes in quantity and quality in most of the wine producing regions of the world is the lack of water at certain times of the growth cycle of the vine. Thus, strategies are being sought to mitigate the effect of the drought. Deficit irrigation (DI) is one of the strategies that provide the best results. This type of irrigation is intended to provide water at specific times and in low doses. The experiment was carried out during the year 2017 in a commercial vineyard located in the “Região Demarcada do Douro” (Portugal), in two cultivars, Touriga Nacional and Touriga Franca. The deficit irrigation was used, 25% of the reference evapotranspiration, compared to the rainfed. The aim of this work was to evaluate the effect of deficit irrigation on the physiological and agronomic parameters of the grapevines as well as the yield and quality of the grapes and must. The results indicated great water stress in the rainfed plants, reducing the stomatal conductance and the net photosynthesis. The irrigation increased the yield without significantly reducing the qualitative parameters of the must.
Description
Keywords
Riego deficitario Touriga Nacional Touriga Franca Vitis vinifera L. Región Demarcada del Duero
Pedagogical Context
Citation
Barreales, David; Andrade, João Verdial; Feliciano, Manuel; Castro, João Paulo; Rodrigues, M.A.; Blanco-Ward, Daniel; Miranda, Ana Isabel; Silveira, Carlos; Monteiro, Alexandra; Lopes, Myriam; Borrego, Carlos; Viceto, Carolina; Rocha, Alfredo; Ribeiro, A.C. (2018). Efecto del riego deficitario en los cultivares Touriga Nacional y Touriga Franca (Vitis vinifera L.) en la Región Demarcada del Duero (Portugal) = Effect of deficit irrigation in the cultivars Touriga Nacional and Touriga Franca (Vitis vinifera L.) in the Douro Demarcated Region (Portugal). In XII Congreso Internacional Terroir. Zaragoza. p. 440-447. ISBN 978-84-09-03040-8