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IVES 9 IVES Conference Series 9 Influence of irrigation on water status, productivity, yield and must composition in Tempranillo grapevine under Duero Valley zone conditions

Influence of irrigation on water status, productivity, yield and must composition in Tempranillo grapevine under Duero Valley zone conditions

Abstract

[English version below]

Cette étude a pour but d’évaluer la modification de l’état hydrique (potentiel hydrique foliaire), le comportement productif (matière sèche et rendement) et la expression qualitative (poids de baie, degrée Brix, pH, acidité totale, concentration polyphénolique) de la varieté Tempranillo dans la Vallée du Douro, à l’A.O. Cigales, comme conséquence de l’application d’une irrigation modérée. Pour développer l’essai on a appliqué les suivantes doses d’arrosage: 0% et 20% de ETo. L’essai experimental a été situé à Valladolid (Castilla et León, Espagne). Les ceps ont été plantés en 1993, sur porte-greffe 110R, et ont été conduites en espalier, menés en cordon Royat bilateral et taillés en coursons, avec une densité de plantation de 2645 ceps/ha (2.7 m x 1.4 m).
L’aplication d’irrigation a permis d’apprécier une augmentation du potentiel hydrique foliaire et un accroissement important de la production de matière sèche et du rendement. Le stress hydrique dérivé de l’absence d’irrigation a provoqué un accroissement de la concentration de sucres, le pH et l’acidité totale, ainsi que la concentration polyphénolique du moût par la diminution du poids de baie. Dans les conditions de l’essai (zone de la Vallée du Douro) et avec la densité de plantation utilisée, l’application de doses modérées d’irrigation cause une amélioration de l’état hydrique de la vigne et une importante augmentation de la productivité du vignoble et du rendement, mais il peut occasionner une réduction de la qualité du raisin de Tempranillo.

This study analyzes the influence of moderate irrigation on plant water status (leaf water potential), productivity (dry matter and yield) and fruit quality (berry size, ºBrix, pH, titratable acidity, phenolic compounds) of Tempranillo grapevine in the Duero river Valley, at the A.O. Cigales. Irrigation treatments applied were: 0% and 20% ETo. The experimental trial was located in Valladolid (Castilla y León, Spain). The 12-year-old vines grafted onto 110 Richter rootstock were vertical trellis trained, through bilateral cordon, and spur pruned. Vine spacing was 2645 vines per ha (2.7 m x 1.4 m).
The application of irrigation has increased the leaf water potential level and provoked an important increase of dry matter production as well as yield. The water stress caused by the lack of watering has increased sugar concentration, pH, titratable acidity and phenolic compounds concentration, through the berry size reduction. The application of moderate doses of irrigation causes an improvement of water status and an important increase of productivity and yield conditioned by the climatic characteristics of the zone (Valley of the Duero river) and the soil of the experimental trial. Nevertheless, a reduction of the must quality of Tempranillo grapevine can take place due to the irrigation.

DOI:

Publication date: January 12, 2022

Issue: Terroir 2004

Type: Article

Authors

J. Yuste, J.L. Asenjo, H. Martín, R. Yuste

Instituto Tecnológico Agrario de Castilla y León. Valladolid. Spain

Contact the author

Keywords

Acidity, berry size, dry matter, leaf water potential, polyphenols, soluble solids

Tags

IVES Conference Series | Terroir 2004

Citation

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