Terroir 1996 banner
IVES 9 IVES Conference Series 9 Un Système d’Informations à Références Spatiales sur le Vignoble. Un outil performant d’aide aux recherches sur la caractérisation des terroirs viticoles

Un Système d’Informations à Références Spatiales sur le Vignoble. Un outil performant d’aide aux recherches sur la caractérisation des terroirs viticoles

Abstract

The “Terroirs d’Anjou” project led by the Agronomy sector of the Vine and Wine Research Unit of the INRA center in Angers aims to characterize the viticultural terroirs in a study area which includes 29 municipalities in the Maine et Loire and cuts across the Anjou, Coteaux du layon and Coteaux de l’Aubance appellation areas.

The research methodology on viticultural terroirs developed by UVV revolves around two main themes:
– A characterization of terroirs in the field which consists of collecting information relating to the physical components of the environment. Observations on geology, soils and landscapes thus form the basis of the study. This step is similar to a cartographic survey
– A survey conducted among winegrowers in each of the 29 municipalities. This survey is intended to integrate human factors within the study, and to study the possibilities of use as an experimental tool for highlighting the terroir effect. The questionnaire focuses on the behavior of the vine, winemaking, knowledge and empirical management of the terroirs by the winegrower.

This study therefore entails a large volume of information which must be managed in an optimal way to facilitate their processing, while preserving their particular character of localized data. Indeed, there is no direct relationship allowing to associate the data of the investigation on the one hand with those of the characterization on the other hand. The only relationship existing between these two levels of information is of the spatial superposition type. To use it and thus cross the two types of information, it is necessary to manage the associated geographical objects.

DOI:

Publication date: March 25, 2022

Type: Poster

Issue: Terroir 1996

Authors

P. BOLO, R. MORLAT, D. RIOUX

INRA.URVV.
42, rue Georges Morel, 49071 Beaucouzé

Tags

IVES Conference Series | Terroir 1996

Citation

Related articles…

Untargeted metabolomics analyses to study taste-active compounds released during post-fermentation maceration of wine

The sensory properties of a wine depends on its colours, aromas and flavors. Regarding red wines, the gustatory part consists of the acid, bitter and sweet tastes

CIEDE2000 colour difference value as a parameter for tracing the ageing process on wood aged spirits

It is quite common nowadays to carry out analyses which allow to control the ageing of spirits that are aged in wood casks. Many control parameters have been previously studied, such as the concentration of different phenolic compounds or the Total Polyphenol Index, in order to better understand the ageing process of wood aged spirits. On the other hand, it is frequent to analyse as a physical parameter the colour of those spirit samples, by stating them as an array of three coordinates from various colour spaces as CIE L*a*b* or CIE L*C*H*.

Phenotyping bud break and trafficking of dormant buds from grafted vine

In grapevine, phenology from bud break to berry maturation, depends on temperature and water availability. Increases in average temperatures accelerates initiation of bud break, exposing newly formed shoots to detrimental environmental stresses. It is therefore essential to identify genotypes that could delay phenology in order to adapt to the environment. The use of different rootstocks has been applied to change scion’s characteristics, to adapt and resist to abiotic and biotic stresses[1].

Use of fumaric acid on must or during alcoholic fermentation

Fumaric acid has been approved by the OIV in 2021 for its application on wine to control the growth and activity of lactic acid bacteria. Fumaric acid is currently being evaluated by the OIV as an acidifier of must and wine. Investigations during the 2023 vintage provided further information on its use on must or during AF, thus completing information provided during the previous vintage.

The grapesim model: a model to better understand the complex interactions between carbon and nitrogen cycles in grapevines

Nitrogen fertilization is an important practice to guarantee vineyards sustainability and performance over years, while ensuring berry quality. However, achieving a precise nitrogen fertilization to meet specific objectives of production is difficult. There is a lack of knowledge on the impact of nitrogen fertilizers (soil/foliar; organic/mineral) and different levels of fertilization on the interactions between carbon and nitrogen cycles within the vine. Crop models may be useful in that purpose because they can provide new insights of the effects of fertilization in carbon and nitrogen storage. The objective of this study is to build a model to simulate grapevine carbon and nitrogen content in vines to evaluate the impact of different fertilization strategies in vine growth and yield.