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

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

Abstract

[English version below]

L’objectif de cette étude est analyser l’influence de la densité de plantation sur l’état hydrique (potentiel hydrique), 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. Pour développer l’essai on a appliqué les suivantes densités de plantation: 2645 ceps/ha (2.70 m x 1.40 m), “basse densité”, et 3953 ceps/ha (2.20 m x 1.15 m), “haute densité”. 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, ayant été cultivés avec une dose d’irrigation du 20% ETo depuis juillet jusqu’à septembre.
L’augmentation de la densité de plantation a permis d’apprécier une diminution de la production de matière sèche et du rendement, malgré que le potentiel hydrique foliaire de base n’a pas montré toujours que les ceps avaient un état physiologique plus mauvais. L’augmentation de la densité de plantation a provoqué une réduction significative du poids de la baie et un accroissement de la concentration de sucres, le pH (en relation avec une plus grande concentration de K), l’acidité totale et la concentration polyphénolique du moût. Dans les conditions de l’essai (zone de la Vallée du Douro) et avec une dose d’irrigation modérée (20% ETo), l’augmentation de la densité de plantation a provoqué une amélioration de la qualité du raisin de Tempranillo en ce qui concerne à maturation et concentration polyphénolique, bien que le vignoble a eu une réduction de la production du raisin.

The purpose of the study is to evaluate the influence of vine spacing on plant water status (leaf water potential), productivity (dry matter and yield), and fruit quality (berry size, ºBrix, pH, total acidity, polyphenolic composition) of Tempranillo grapevine in the Valley of Duero river, at the A.O. Cigales. Vine spacing treatments applied were: 2645 vines per ha (2.70 m x 1.40 m), Low density, and 3953 vines per ha (2.20 m x 1.15 m), High density.
The experimental trial was located in Valladolid (Castilla y Leon, Spain). The 12-year-old vines grafted onto 110 Richter rootstock were vertically trellis trained, through a bilateral cordon, and spur pruned. The experimental vineyard was irrigated by means of doses of 20% ETo from July to September.
The increase of the number of plants per hectare has provoked a reduction of dry matter production and yield, in spite of the fact that predawn leaf water potential has not always shown the different water status of vines. The reduction of vine spacing corresponding to the higher plant density has provoked a significant reduction of berry size and the increase of the values of ºBrix, pH (related to higher K accumulation), titratable acidity and phenolic concentration. The increase of the number of plants per hectare has affected the production and the quality of Tempranillo grapevine in the conditions of the zone (Valley of the Duero river) and the soil of the experimental trial with a moderate doses of irrigation. The main effect of the increase has been the partial improvement of the fruit quality, related to sugar and phenolic concentrations, with the inconvenient of the yield reduction.

 

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Publication date: January 12, 2022

Issue: Terroir 2004

Type: Article

Authors

J.L. Asenjo, MªV. Alburquerque, J.A. Rubio, J. Yuste

Instituto Tecnológico Agrario de Castilla y León. Valladolid. Spain

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Keywords

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

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IVES Conference Series | Terroir 2004

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