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.

Download the PDF

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…

Citizen science for promoting a disease-resistant grape variety through a wine competition

The societal pressure to reduce the use of pesticides in Switzerland is steadily increasing. Viticulture is particularly in focus due to the frequent use of fungicides to combat downy and powdery mildew.

Read More

SENSORY PROPERTIES IMPORTANT TO AUSTRALIAN FINE WINE CONSUMER SEGMENT PERCEPTION OF CHARDONNAY WINE COMPLEXITY AND PREFERENCE

Wine complexity is considered a multidimensional yet equivocal sensory percept. This project uncovered sensory attributes Australian Chardonnay wine consumers associate with Chardonnay wine complexity
and correlations between expert and consumer perceived wine complexity and preference. A
wine consumer test examined 6 Australian Chardonnay wines of three complexity levels designated low (LC1&2), medium (MC1&2), and high (HC1&2) by an expert panel (n = 8) using a benchtop sensory task. Consumers (n = 81) rated their perceived liking using a 9-point hedonic scale; wine complexity with a 5-point scale anchored “low”, “low-medium”, “medium”, “medium-high”, and “high” and lastly, profiled the wines using Rate-All-That-Apply (RATA). Psychographic segmentation with the Fine Wine Instrument
(FWI) generated three segments; Wine Enthusiasts (WE n=29), Aspirants (ASP n=40) and No- Frills (NF n=12).

Read More

The effects of reducing herbicides in New Zealand vineyards

Herbicides are commonly sprayed in the vine row to prevent competition with vines for water and minerals and to keep weeds from growing into the bunch zone. Sprays are applied before budbreak and reapplied multiple times during the season to keep the undervine bare. There is growing concern about the negative effects of herbicides on humans and the environment, and weeds in New Zealand have developed resistance to herbicides. Therefore, it is imperative that we reduce our reliance on herbicides in viticulture and incorporate methods that do not engender resistance.

Read More

Comparison of destructive and non-destructive measurements of table grape berries to assess quality parameters using spectroscopy

The quality of table grapes is critically influenced by several parameters, including sugar content, acidity, firmness, and overall appearance.

Read More

Defining the terroir of the Columbia gorge wine region, Oregon and Washington, USA using geographic information systems (GIS)

The Columbia Gorge Wine Region (CGWR) extends for about 100km along the Columbia River and includes the Columbia Gorge American Viticultural Area (AVA) and the southwest portion of the Columbia Valley AVA.

Read More