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IVES 9 IVES Conference Series 9 Consumo hídrico de la vid, c.v. Listán negro, en la comarca de Tacoronte-Acentejo. Tenerife

Consumo hídrico de la vid, c.v. Listán negro, en la comarca de Tacoronte-Acentejo. Tenerife

Abstract

Durante el bienio 1998-1999 se estudió el uso consuntivo de cultivos de viña var. Listán negro, en cuatro fincas situadas en la Comarca de Tacoronte-Acentejo, en la isla de Tenerife. El consumo de agua de los distintos cultivos se determinó cada año en el período que fue desde la brotación (mes de marzo) hasta la vendimia (mes de septiembre), y se obtuvo mediante balance hídrico. Para ello, se midieron las precipitaciones, las dotaciones de riego y la variación de humedad en el suelo, en cada finca. La pérdida de agua por escorrentía y por percolación profunda se estimó despreciable, debido a la escasa cuantía e intensidad de las lluvias en esta época del año.
Para relacionar la evapotranspiración real del cultivo, con la potencial, se calculó esta última mediante
el método de radiación propuesto por FAO, usando coeficientes de cultivo (kc) que variaban desde 0.25 hasta 0.80.
El uso consuntivo de todos los cultivos fue similar al potencial, en la etapa que transcurría desde la brotación hasta la floración, debido a la alta disponibilidad de agua en el suelo, y los aportes frecuentes de agua a través del riego y la lluvia. En la etapa que fue desde la floración hasta el envero, el consumo real del cultivo disminuyó sensiblemente al compararlo con el potencial (aproximadamente un 50 %). En la última etapa que transcurrió desde el envero hasta la vendimia, los cultivos se vieron sometidos a un fuerte estrés hídrico que dio lugar a drásticas reducciones del consumo (aproximadamente un 20 % del potencial).

DOI:

Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

Domingo Sáenz-Pisaca (1), Noelia Rodríguez-Hernández (1), M. Soledad Jiménez (2), Domingo Morales (2)

(1) Dpto. Ciencias Agrarias. Centro Sup. Ciencias Agrarias. Univ. La Laguna. 38207 ​Tenerife
(2) Dpto. Biología Vegetal. Univ. La Laguna. – La Laguna. 38207 ​Tenerife

Tags

IVES Conference Series | Terroir 2000

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