Terroir 1996 banner
IVES 9 IVES Conference Series 9 Traçability of main mineral elements on the chain “soil-leaf-must-wine” in relation to “terroir” and vintage in Loire Valley(France)

Traçability of main mineral elements on the chain “soil-leaf-must-wine” in relation to “terroir” and vintage in Loire Valley(France)


[English version below]

Dans le cadre de recherches sur la mise en évidence et le déterminisme d’un «effet terroir »un réseau de parcelles du cépage Cabernet Franc greffé sur S04, a été suivi de 1979 à 1990 en Val de Loire (A.O.C. Saumur-Champigny, Chinon et Bourgueil). Des analyses chimiques (N,P, K, Ca, Mg, Fe, Mn, Zn) ont été réalisées sur le sol, les feuilles au stade véraison, les moûts en cours de maturation et à la vendange et enfin sur le vin, pour 18 sites (répartis dans 12unités terroirs de base) et 7 millésimes différents. Dans les conditions de cet essai, le comportement des feuilles à la véraison est relativement indépendant du millésime pour N, P,K et Ca mais fortement influencé par celui-ci pour Mg, Fe, Mn et Zn. Seul le phosphore présente une très bonne traçabilité des feuilles au vin sans relation nette avec les teneurs en phosphore assimilable du sol. Les teneurs en calcium échangeable et le pH du sol, liés à la nature (calcaire ou non) de la roche, ou bien aux apports d’amendements, expliquent la richesse relative en calcium des feuilles mais la traçabilité de cet élément ne se retrouve pas systématiquement dans les moûts et les vins. Les recherches conduites sur ce réseau ont montré que les facteurs chimiques du sol ne semblent pas jouer un rôle déterminant dans « l’effet terroir ».

To study the “terroir” effect, a network of experimental plots with Cabernet franc grafted onto S04 was followed between 1979 and 1990 in Loire Valley (A.O.C.: Saumur-Champigny,Chinon and Bourgueil), in France. Chemical analysis concerning N, P, K, Ca, Mg, Fe, Mn,and Zn elements were made on soils, leafs at véraison, musts over the ripening period and at the grape harvest, and on the wine, in 18 plots (corresponding to 12 Basic Terroir Units), on seven vintages. In our experiment conditions, the behavior of leafs at véraison was relatively independent to vintage for N, P, K and Ca but greatly influenced by it for Mg, Fe, Mn and Zn. Only phosphorus had shown a very good traçability from leaf to wine, without relation with assimilable phosphorus in soil. pH and Ca exchangeable contents in soil, due to rock natureand soil amendments, explain Ca contents in leaf but the traçability of this element did not continue up to must and wine. Results obtained with this trial showed that soil chemical factors seemed to not be predominant in the “terroir effect”.


Publication date: February 15, 2022

Issue: Terroir 2002

Type: Article



* UMR A_ 462 SAGAH (INRNINH/Univ. Angers), BP 57 – F 49071 Beaucouzé cedex
** UVV : Unité Vigne et Vin, INRA, BP 57- F 49071 Beaucouzé cedex


vigne, N, P, K,Ca, Mg, traçabilité


IVES Conference Series | Terroir 2002


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.