Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Temperature variability at local scale in the Bordeaux area. Relations with environmental factors and impact on vine phenology

Abstract : Climate is a major factor of the physical environment influencing terroir expression in viticulture. Thermal conditions strongly impact vine development and grape composition. Spatializing this parameter at local scale allows for more refined vineyard management. In this study, temperature variability was investigated over an area of 19,233 ha within the appellations of Saint-emilion, Pomerol, and their satellites (Bordeaux, France). A network of 90 temperature sensors was deployed inside grapevine canopies of this area and temperatures were measured from 2012 through 2018. To determine the effect of temperature on vine development, the phenological stages (budbreak, flowering, and veraison) were recorded on 60 reference plots planted with Vitis vinifera L. cv. Merlot located near the temperature sensors. Results showed great spatial variability in temperature, especially minimum temperature, with an amplitude of up to 10 degrees C on a given day. The spatial variability of the Winkler index measured in the canopy inside a given vintage was around 320 degree-days. This research explores the main factors affecting spatial variability in temperature, such as environmental factors and meteorological conditions. The impact of temperature on vine behavior was also analyzed. Observed phenological dates were compared to those estimated using the Grapevine Flowering Veraison model. Maps of temperatures and phenological observations were created over this area and provided a useful tool for improved adaptation of plant material and training systems to local temperature variability and change.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [106 références]  Voir  Masquer  Télécharger

https://hal.inrae.fr/hal-02879615
Déposant : Marion Desailly <>
Soumis le : mercredi 24 juin 2020 - 09:34:43
Dernière modification le : vendredi 18 septembre 2020 - 14:34:33

Fichier

2020_DeResseguier_fpls.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Citation

Laure de Resseguier, Mary Séverine, Renan Le Roux, Théo Petitjean, Hervé Quénol, et al.. Temperature variability at local scale in the Bordeaux area. Relations with environmental factors and impact on vine phenology. Frontiers in Plant Science, Frontiers, 2020, 11, pp.1-20. ⟨10.3389/fpls.2020.00515⟩. ⟨hal-02879615⟩

Partager

Métriques

Consultations de la notice

57

Téléchargements de fichiers

57