Terroir 2012 banner
IVES 9 IVES Conference Series 9 A general phenological model for characterising grape vine flowering and véraison

A general phenological model for characterising grape vine flowering and véraison

Abstract

The timing of phenology is critical if grape quality potential is to be optimized. Phenological process based models are used to predict phenology. In this study, three different models were tested to predict flowering and veraison of grapevine (Vitis vinifera L.) using a new extensive phenological database. The Spring Warming model was found optimal in its trade-off between parsimony (number of parameters) and efficiency. The optimal parameter combination found for this model to calculate the degree-days was 0°C for the base temperature and the 60th day of the year for the starting day of accumulation (northern hemisphere). This model was validated at the varietal level, performed better than the classic Spring Warming model with Tb of 10 °C and t0 of 1st January (northern hemisphere) and remains easy to use.

DOI:

Publication date: October 1, 2020

Issue: Terroir 2012

Type: Article

Authors

Audra K. PARKER (1,2,3,4), Inaki GARCIA DE CORTAZAR-ATAURI (5), Isabelle CHUINE (6), Rainer W. HOFMANN (2), Mike C.T. TROUGHT (1), Cornelis VAN LEEUWEN (3,4)

(1) The New Zealand Institute for Plant & Food Research Ltd. Marlborough Wine Research Centre, 85 Budge St, PO Box 845, Blenheim 7240, New Zealand.
(2) Lincoln University, P.O. Box 84, Lincoln 7647, New Zealand.
(3) Univ. Bordeaux, ISVV, Ecophysiology and functional genomics of grapevines, UMR 1287, F-33140 Villenave d’Ornon, France
(4) Bordeaux Sciences Agro, ISVV, Ecophysiology and functional genomics, UMR 1287, F-33140 Villenave d’Ornon, France
(5) INRA-Agroclim, Domaine St Paul – Site Agroparc, 84914 Avignon cedex 9, France.
(6) Centre d’Ecologie Fonctionnelle et Evolutive, Equipe Bioflux, CNRS, 1919 route de Mende, 34293 Montpellier Cedex 5, France.

Contact the author

Keywords

grapevine, modelling, phenology, veraison, flowering, temperature

Tags

IVES Conference Series | Terroir 2012

Citation

Related articles…

Soil proximal sensing provides direction in delineating plant water status of ‘crimson seedless’ (Vitis vinifera L.) vineyards

Crimson Seedless’ (Vitis vinifera L.) is a late-ripening, red seedless table grape cultivar with inadequate anthocyanin accumulation and less than ideal berry size issues

Vers la maîtrise de l’effeuillage pré-floral de la vigne

Dans le cadre de TerclimPro 2025, Thibaut Verdenal a présenté l’article IVES Technical Reviews. Retrouvez la présentation ci-dessous ainsi que l’article associé : https://ives-technicalreviews.eu/article/view/8405

The colour pattern of flower arrangements influence wine tasters’ sensory description

The arrangements of flowers and wine counterparts are inextricably linked. Whether a fundamental aspect of tablescaping or acolytes to broader entertainment rituals, they have an entangled history since ancient times. The aim of this contribution is to verify the influence of visually delicate and robust flower arrangements on individual description of wines. Changes in the sensory description of wines were investigated during subjects’ (thirty-two participants) exposure to three different conditions: the presence of delicate, robust, or totally absent flower arrangements. In each condition, the same two wines were blind tasted: a wine previously defined as delicate – a Pinot Noir from Australia, and a wine known for its robust character – a Tannat from Uruguay.

Protection of genetic diversity: maintenance and developements of a grapevine genebank in Hungary

Among the items preserved in gene banks, the old standard and autochthonous varieties represent an increasing value, since these varieties may have properties to make their cultivation more effective under changing climatic conditions. The increasingly extreme weather is a huge challenge for the viticulture. Collectional varieties can also play important role in protection against pests and pathogens. A genebank ensures not only the preservation of rare varieties, but also gives the opportunity for more knowledge and research of these varieties.

Development of a new commercial phenolic analysis method for red grapes

Grape phenolic content is an important quality factor that influences the appearance and mouthfeel of premium red wines.