Terroir 1996 banner
IVES 9 IVES Conference Series 9 Tools for assessing vine nitrogen status; role of nitrogen uptake in the “terroir” effect

Tools for assessing vine nitrogen status; role of nitrogen uptake in the “terroir” effect

Abstract

Among the numerous nutrients vines extract from the soil, nitrogen is the one that interferes most with vine vigor, yield, berry constitution and wine quality. Many studies relate on the influence of various levels of nitrogen fertilization on vine growth, yield and berry constitution (KLIEWER, 1971; BELL et al., 1979; DELAS et al., 1991; SPAYD et al., 1993; SPAYD et al., 1994). Other papers deal with the depressive effect of cover crop on vine nitrogen supply, which can partly explain the quality-improving effect of this technique (SOYER et al., 1996).
Vine nitrogen uptake is likely to vary to a considerable extend with soil parameters, even when no nitrogen fertilization or cover crop occurs. Figuring among those parameters are: soil organic matter content, C/N ratio of soil organic matter and soil organic matter turnover. The latter depends mainly on soil temperature, soil aeration, soil pH and soil moisture content. Despite considerable empirical evidence, almost no literature is available on vine nitrogen status as a function of soil characteristics and the impact of this status on vine development, berry constitution and wine quality. This might be explained by the lack of accuracy of currently available indicators of vine nitrogen status, such as petiole or leaf blade nitrogen content, or their lack of accessibility, as is true for cane arginine content. In this paper we discuss the use of several forms of nitrogen in grape juice (must) as indicators of vine nitrogen status. The accuracy of these indicators provides the means to differentiate nitrogen offer by the soil in “terroir” studies and assess its impact on berry quality potential.

Download the PDF

DOI:

Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

Cornelis VAN LEEUWEN (1, 2), Philippe FRIANT (1), Enzo RONCO (3), Cyril JOURDAN (2), Jean-Pierre SOYER (4), Christian MOLOT (4) and Xavier CHONE (2)

(1) ENITA de Bordeaux, 1 Crs du Général de Gaulle, F 33175 Gradignan Cedex
(2) Faculté d’OEnologie, 351 Cours de la Libération, F 33405 Talence Cedex
(3) Faculta’ di Farmacia, Universita’ degli studi di Torino, Italia
(4) INRA Agronomie, Domaine de la Grande Ferrade, F 33140 Villenave d’Ornon

Contact the author

Tags

Terroir 2000

Citation

Related articles…

A browser application for comprehensive 3-dimensional LC × LC × IM – MS data analysis to study grape and wine polyphenols

The analysis of structurally diverse proanthocyanidins in grapes and wine is challenging. Comprehensive two-dimensional liquid chromatography (LC×LC) and ion mobility spectrometry-mass spectrometry (IMS-MS) are increasingly used to address the challenges associated with the analysis of highly complex samples such as wine and grapes

Read More

Wine yeast species show strong inter- and intra-specific variability in their sensitivity to uv-c radiation

While the trend in winemaking is toward reducing the inputs and especially sulphites, the development of While the trend in winemaking is toward reducing the inputs

Read More

Utilizing ozone for the management of powdery mildew (Erysiphe necator Schwein.) in vineyards: potential and challenges

Powdery mildew, caused by fungal pathogens, poses a significant threat to grapevines in the DOCa Rioja region. In efforts to improve control strategies while reducing reliance on conventional phytosanitary products, ozone could constitute a potential alternative. However, it has short persistence, thus requiring frequent treatments. This study aimed to assess the suitability of ozone as an active substance for controlling powdery mildew within a phytosanitary strategy aimed at reducing conventional phytosanitary product usage. The strategy integrating ozone with conventional products yielded powdery mildew levels comparable to conventional treatments in both disease incidence and severity.

Read More

The anthocyanin profile of galician endangered varieties. A tool for varietal selection

AIM: The current loss of genetic grapevine diversity is mainly due to the reduced number of varieties used for making wine. A way of preserved endangered varieties is the establishment of germplasm banks.

Read More

Wine as cultural national heritage: 10 years of the “Vino Bebida Nacional” law in Argentina: review and lessons

Ten years have passed since the enactment and implementation of law no. 26,870 “national drink wine” in Argentina, a pioneering legislation worldwide that seeks to disseminate the cultural characteristics inherent in the production, elaboration, and consumption of wine, as well as its deep-rooted traditions.

Read More