Terroir 2006 banner
IVES 9 IVES Conference Series 9 New technologies to characterize spatial variability in viticulture

New technologies to characterize spatial variability in viticulture

Abstract

Measurements of parameters spatialy positionned, with on line sensors mounted on classical machinery or airborne imagery is no more a problem in viticulture. In a short time, high resolution data dedicated to the assessment of the vine characteristics, the soil, the harvest, etc. will become a reality. This information sources will allow the wine grower to have a spatial accurate knowledge of the vineyard and its variability. Such an accuracy in monitoring the production system was never achieved until now. This paper makes a brief overview of the tools and methods already released or under development to assess the vineyard variability of the main parameters. This work makes also an overview of the main references in vineyard variability. It presents the main results observed on yield, sugar, TTA, etc. within field variability. For each of these parameters clues on magnitude of variation and coefficient of variation observed at a within field scale are given. Assessing the within field variability can lead the wine grower to take advantage of this variability by adopting site specific management practices. In that case, information of the spatial structure of the variation is of importance since it gives an idea of how a site specific management is opportune on each field. This work will present the main results obtained in spatial structure assessment in viticulture (focusing on yield). Finally, one of the keypoint in viticulture is the assessment of the plant water restriction and its variability whether over the time or over the space. This work presents main experimental results dedicated to the assessment of the within field variability of the plant water status and its link with harvest quality.

Download the PDF

DOI:

Publication date: January 11, 2022

Issue: Terroir 2006

Type: Article

Authors

B. TISSEYRE (1), J. TAYLOR (2) and OJEDA H. (3)

(1) UMR Itap, ENSA. Montpellier, bât. 21, 2 place Viala, 34060 Montpellier, France
(2) Australian Centre for Precision Agriculture, University of Sydney, Australia
(3) UMR SPO, INRA,station expérimentale de Pech Rouge, 11000 Gruissan, France

Contact the author

Keywords

grapevine, spatial variability, precision viticulture, temporal stability, water restriction

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

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

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.
Read More

Evaluation of sap flow and trunk diameter measurements in grapevines using time series decomposition

Grapevines are very sensitive to weather conditions. Excessively hot and dry periods trigger the activation of survival mechanisms, such as reduction of crop transpiration and the redistribution of water. Monitoring these mechanisms is, therefore, essential to better understand the grapevine water dynamics and maximize water-use efficiency.

Read More

Effect of different foliar nitrogen applications on the must amino acids and glutathione composition in Cabernet Sauvignon vineyard

Cabernet Sauvignon is one of the most important winegrape varieties in Chile. However, temperature raise and decreased rainfall due to climate change can lead to grape quality decrease in certain areas. Amino acids are essential as nitrogen source for yeast but also directly affect grape quality serving as precursors of certain volatile compounds that enhance the wine bouquet. Besides, glutathione is an important tripeptide acting as antioxidant, preventing the appearance of browning pigments in must and exerts a protective effect in volatile compounds.

Read More

Photodegradation of retsina wine: does pine resin protect against light-induced changes?

Retsina is a wine deeply rooted in Greek tradition but often misunderstood, largely due to the poor quality associated with past production. Historically, pine resin was used to seal wine transport containers, and over time, its distinctive aroma led to its intentional incorporation into winemaking.

Read More

Vineyard management practices to reduce sugar content on ‘Monastrell’ grapes

Climate change is resulting in more dry and hot summers, accelerating grape ripening and increasing berry sugars concentration. This results in wines with a higher alcohol content, which has a negative impact on wine quality, as well as, on consumer health. Agronomic practices that minimize these effects on berry composition and, consequently, on wine quality must be defined. In this work, different management practices have been assessed on rainfed ‘Monastrell’ grapevines in Jumilla (Murcia, Spain) from 2021 to 2023 vintages. Mulching, shading, application of kaolin and different types of pruning were evaluated, among others field adaptation practices.

Read More