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Evaluation of the vineyard water status (Vitis vinifera L. CV. Tempranillo) from the developmental stage of the shoot tips

Authors: Martínez de Toda, Fernando; Balda, Pedro; Oliveira, Manuel;

Evaluation of the vineyard water status (Vitis vinifera L. CV. Tempranillo) from the developmental stage of the shoot tips

Abstract

[FR]: [Objectifs]: Une expérimentation a été mise en place pour évaluer une méthode visuelle basée sur l'état des apex afin d’estimer de manière opérationnelle l’état hydrique du vignoble. Les objectifs spécifiques sont (i) la détermination d’une relation fonctionnelle entre l’état de l'extrémité des rameaux et le potentiel hydrique foliaire au midi solaire, une méthode plus traditionnelle pour évaluer le stress hydrique de la vigne, et (ii) tester ses performances et la simplicité de sa mise en oeuvre sur le terrain. [Méthodes et résultats]: La parcelle expérimentale est située dans la région viticole de La Rioja (Espagne). Les mesures Yl and S ont été réalisées à quatre différents stades phénologiques. La relation a été établie par régression linéaire multiple avec les données recueillies dans un dispositif randomisé. La relation a été testée avec les données recueillies dans un autre vignoble au cours de la saison suivante. [Conclusion]: En conclusion, l’évaluation visuelle de l'état des apex peut être utilisée de manière fiable pour estimer l'état hydrique de la vigne et pour gérer l'irrigation des vignobles. [Signification et impact de l’étude]: La méthode des apex est rapide et non destructive, elle ne nécessite aucune compétence ou équipements particuliers et sa mise en oeuvre est indépendante des conditions météorologiques. Le traitement des données obtenu est particulièrement simple.

[EN]: [Aims]: An experiment was set up to evaluate the visual assessment of « shoot tip stage » as a method to estimate the water status of vineyards and its utility in vineyard management. The specific objectives were (1) determining the functional relationship of shoot tip stage (S) with leaf water potential (Ψl) at solar noon, a more traditional method for evaluating vine water stress, and (2) testing its performance and simplicity in field conditions. [Materials and results]: A field study was first conducted in 2009 in a vineyard located in the La Rioja wine producing region (Spain). Ψl and S measurements were performed at four different phenological stages and the data were collected in a completely randomized design. The relationship between the two parameters was established by multiple linear regression analyses and was validated with data collected in another vineyard during the next year. [Conclusion]: The calculated shoot tip stage can be used reliably to estimate vineyard water status and to manage vineyard irrigation. [Significance and impact of the study]: The shoot tip method is fast and non-destructive, it does not require any special skill or equipment, it is independent of weather conditions, and the calculations are simple.

6 páginas, 3 figuras, 6 tablas.

Peer reviewed

Keywords

Potentiel hydrique foliaire, Vitis vinifera, Grapevine, Leaf water potential, Grappe, Shoot tip stage, Extrémité des rameaux

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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