terclim by ICS banner
IVES 9 IVES Conference Series 9 Grapevine yield-gap: identification of environmental limitations by soil and climate zoning in Languedoc-Roussillon region (south of France)

Grapevine yield-gap: identification of environmental limitations by soil and climate zoning in Languedoc-Roussillon region (south of France)

Abstract

Grapevine yield has been historically overlooked, assuming a strong trade-off between grape yield and wine quality. At present, menaced by climate change, many vineyards in Southern France are far from the quality label threshold, becoming grapevine yield-gaps a major subject of concern. Although yield-gaps are well studied in arable crops, we know very little about grapevine yield-gaps. In the present study, we analysed the environmental component of grapevine yield-gaps linked to climate and soil resources in the Languedoc Roussillon. We used SAFRAN data and IGP Pays d’Oc wine yields from 2010 to 2018. We selected climate and soil indicators proving to have a significant effect on average wine yield-gaps at the municipality scale. The most significant factors of grapevine yield were the Soil Available Water Capacity; followed by the Huglin Index and the Climatic Dryness Index. The Days of Frost; the Soil pH; and the Very Hot Days were also significant. Then, we clustered geographical zones presenting similar indicators, facilitating the identification of resources yield-gaps. We discussed the number of zones with the experts of IGP Pays d’Oc label, obtaining 7 zones with similar limitations for grapevine yield. Finally, we analysed the main resources causing yield-gaps and the grapevine varieties planted on each zone. Mapping grapevine resource yield-gaps are the first stage for understanding grapevine yield-gaps at the regional scale.

DOI:

Publication date: May 5, 2022

Issue: Terclim 2022

Type: Poster

Authors

Hugo Fernandez-Mena1,2, Nicolas Guilpart 3, Philippe Lagacherie4, Renan Le Roux5, Mayeul Plaige1, Maxime Dumont1, Marine Gautier1, Jean-Marc Touzard6, Hervé Hannin7 and Christian Gary1

1UMR ABSys, AgroBiodiversified Systems, Montpellier, France
2UMR EMMAH, Modelling of Mediterranean Agroecosystems, Avignon, France
3UFR DISC, Cropping systems of Agroparistech, Paris, France
4UMR LISAH, Interactions in Soils and Water in Agroecosystems, Montpellier, France
5U. Agroclim, Agriculture and Climate, Avignon, France
6UMR Innovation, Montpellier, France
7UMR MoISA, Markets, Institutions and Strategies in Agriculture, Montpellier, France

Contact the author

Keywords

grapevine yield-gaps, climate and soil indicators, vineyard regional mapping, yield declining

Tags

IVES Conference Series | Terclim 2022

Citation

Related articles…

Rootstock differences in soil-water uptake during drying-wetting cycles imaged with 3d electrical resistivity tomography

Limited knowledge has been acquired on grapevine roots and rhizosphere processes because of harder access when compared to aerial parts. There is need for new methods to study root behavior in undisturbed field conditions, and relate these effects on canopy and yield. The aim of this multidisciplinary study was to image and quantify spatial-temporal differences in soil-water uptake by genetically different rootstocks and to assess the response of the canopy during drought and rewetting.

The future of DMS precursors during alcoholic fermentation: impact of yeast assimilable nitrogen levels on the contents of DMSp in young wines

Some red wines develop a “bouquet” during ageing. This complex aroma is linked to quality by wine tasters1. The presence of dimethylsulfide (DMS) in those wines is implicated

Under trellis cover crop induces grapevine tolerance to bunch rot

Botrytis bunch rot occurrence is one of the most important limitations for the wine industry in humid environments. A positive correlation between grapevine growth and susceptibility to fungal pathogens has been found. In theory the effect of grapevine vegetative growth on bunch rot expression results from direct effects (cluster architecture, nitrogen status among others) and indirect ones (via microclimate). However, a reduction in bunch rot incidence can be achieved in some circumstances without major vine growth reduction. The present study was aimed to test the general hypothesis that bunch rot susceptibility is affected by vine vigor, but other factors associated with grapevine vegetative expression could be even more relevant.

The use of epifluorescence versus plating to monitor the effect of different parameters on microorganisms in wine

The monitoring of the number of micro-orgranisms in wine is crucial for the wine producer. Traditional counting methods include microscopic enumeration and plating on selective media, which measures the culturability of the cells. The use of epifluorescence microscopy is, however, a method, which can measure both culturability and

Productivity, quality, and thermal needs of the Piedirosso vine: four years of observations

The effects of temperature on cv Piedirosso, indigenous of the Campania region (South of Italy), were tested in order to study its possible influence on grapevine and to discover how to optimize the qualitative expression