Terroir 2016 banner
IVES 9 IVES Conference Series 9 The “resources profile®”: a relevant decision and support system for adapting viticultural practices to soils agronomic properties and limiting their environmental impacts

The “resources profile®”: a relevant decision and support system for adapting viticultural practices to soils agronomic properties and limiting their environmental impacts

Abstract

Soil is a three-dimensional complex system, which constitutes a major component of Terroir. Soil characteristics strongly influence vine development, grape oenological potentialities and thus wine quality and style.

Soil profile description by means of pits is essential for a relevant characterization of the soil. However, the interpretation of results is very difficult for non-specialists, as for most of advisors or winegrowers, due to the multitude of parameters and their variability within the soil profile.

We propose here a novel method to represent soil parameters variability, integrating thickness and depth of the different horizons, providing an operational Decision and Support System (DSS) for winegrowers and advisors.

For each parameter, soil profile is represented by a vertical block divided in 10 centimeters layers, in order to highlight the thickness of the different horizons. According to the parameter value, a specific color code, based on analytical references, is applied for each horizon. This method has been applied on different soil parameters : coarse fragments content, clay content, slaking and compaction index, carbonate content, pH, organic content and stock, carbon/nitrogen ratio, cation exchange capacity, exchangeable cations contents, base saturation percentage.

This method, called « Resources Profile® », has been tested on a large number of soil types, representative of soils variability in Bordeaux wine production area (France). It allows to easily visualize soil parameters variability within soil profile and to evaluate agronomic properties, such as hydrological soil properties, organic and calcic status, mineral resources or degradation sensitivities.

We believe that the « Resources Profile® » is a relevant DSS for adapting viticultural practices to soils characteristics and for limiting their environmental impacts. This DSS is likely to facilitate the spread of soil science knowledge to the vinegrowing industry.

DOI:

Publication date: June 23, 2020

Issue: Terroir 2016

Type: Article

Authors

M Christen (1), L Cazenave (1), M Guinoiseau (1), E Beauquesne (2), P Guilbault (1)

(1) Chambre d’Agriculture de la Gironde – Vinopôle Bordeaux-Aquitaine, 39 rue Michel Montaigne – CS 20115 33295 Blanquefort Cedex, France
(2) AUREA Agrosciences, 39 rue Michel Montaigne – CS 20115, 33295 Blanquefort Cedex, France

Contact the author

Keywords

winegrowing soils, soil profiles, soil horizons, soil analysis, agronomic properties, viticultural practices, Decision and Support System

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

Physiological and growth reaction of Shiraz/101-14 Mgt to row orientation and soil water status

Advanced knowledge on grapevine row orientation is required to improve establishment, management and outcomes of vineyards on terroirs with different environmental conditions (climate, soil, topography) and in view of a future change to more extreme climatic conditions. The purpose of this study was to determine the combined effect of row orientation, plant water status and ripeness level on the physiological and viticultural reaction of Shiraz/101-14 Mgt.

Effects of mechanical leafing and deficit irrigation on Cabernet Sauvignon grown in warm climate of California

San Joaquin Valley accounts for 40% of wine grape acreage and produces 70% of wine grape in California. Fruit quality is one of most important factors which impact the economical sustainability of farming wine grapes in this region. Due to the recent drought and expected labor cost increase, the wine industry is thrilled to understand how to improve fruit quality while maintaining the yield with less water and labor input. The present study aims to study the interactive effects of mechanical leafing and deficit irrigation on yield and berry compositions of Cabernet Sauvignon grown in warm climate of California.

The effects of cane girdling on berry texture properties and the concentration of some aroma compounds in three table grape cultivars

The marketability of the table grapes is highly influenced by the consumer demand; therefore the market value of the table grapes is mainly characterized by its berry size, colour, taste and texture. Girdling could cause accumulation of several components in plants above the ringing of the phloem including clusters and resulting improved maturity. The aim of the experiments was to examine the effect of girdling on berry texture characteristics and aroma concentration.

Application of a fluorescence-based method to evaluate the ripening process and quality of Pinot Blanc grape

The chemical composition of grape berries at harvest is one of the most important factors that should be considered to produce high quality wines. Among the different chemical classes which characterize the grape juice, the polyphenolic compound, such as flavonoids, contribute to the final taste and color of wines. Recently, an innovative non-destructive method, based on chlorophyll fluorescence, was developed to estimate the phenolic maturity of red grape varieties through the evaluation of anthocyanins accumulated in the berry skin. To date, only few data are available about the application of this method on white grape varieties.

Different yield regulation strategies in semi-minimal-pruned hedge (SMPH) and impact on bunch architecture

Yields in the novel viticulture training system Semi-Minimal-Pruned Hedge (SMPH) are generally higher compared to the traditional Vertical Shoot Positioning (VSP). Excessive yields have a negative impact on the vine and wine quality, which can result in substantial losses in yield in subsequent vintages (alternate bearing) or penalties in fruit quality. Therefore yield regulation is essential. The bunch architecture in SMPH differs from VSP. Generally there is a higher amount but smaller bunches with lower single berry weights in SMPH compared to VSP.