Terroir 2006 banner
IVES 9 IVES Conference Series 9 Characterization of spatial and temporal soil water status in vineyard by DC resistivity measurements

Characterization of spatial and temporal soil water status in vineyard by DC resistivity measurements

Abstract

We performed a DC resistivity monitoring experiment during eight months in 2003. Low, medium and high resolution measurements have been carried out at various locations of a vineyard. General apparent resistivity mapping evidences the spatial variations of the summer drying of the subsurface.
Three experiments have been conducted in the studied area :
– parallel 2-D dipole-dipole sections (96 electrodes at 1 meter spacing). The sections are orientated in the long direction of the studied area and located between the vine rows. After inversion, these sections allow to describe the vertical variations of the electrical resistivity and help to specify the 3D geological sketch of the studied area down to three meters.
– high resolution « borehole like » tomographic sections obtained with a custom electrode set. Three PVC rods, two of them vertically placed and one horizontal between the two vertical carry 48 stainless steel electrodes, 0.13 m spaced. This allows to investigate a 4 squared meters section with electrodes on three sides of it. Two of these devices were placed within the sudied area. Moisture measurements were performed in the investigated section with time domain reflectivity probes. High resolution cross borehole tomography shows moisture variation at the vine stock scale, and short time interval such as the diffusion af a rainfall.

Download the PDF

DOI:

Publication date: December 22, 2021

Issue: Terroir 2006

Type: Article

Authors

J.P. GOUTOULY (1), D. ROUSSET (2), H. PERROUD (2) et J.P. GAUDILLÈRE (1)

(1) I.N.R.A.- UMR Œnologie-Ampélologie, Équipe Écophysiologie and Agronomie Viticole,
71, avenue Édouard-Bourlaux B.P.81 33883 Villenave d’Ornon cedex, France
(2) CNRS –UPPA Modélisation et Imagerie en Géosciences, avenue de l’Université 64000 Pau, France

Contact the author

Keywords

Vitis vinifera, tomography, water content, root absorption, variability

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

Ground vs trellis in rootstock cane production fields

Context and purpose of the study. The vine nursery sector is undergoing a transformation to meet growing environmental and sanitary demands.
Read More

Asymmetrical flow field-flow fractionation with online multidetection is a viable tool to investigate colored red wine colloids

Despite its relevance for wine quality and stability, red wine colloids have not still been
sufficiently investigated, an occurrence due to the lack of suitable analytical techniques to study them as they are present in wine.

Read More

Tasting soils in Pinot noir wines of the Willamette valley, Oregon

The conventional wisdom of vintners is that alkalinity, and thus less sour and more rounded taste, are enhanced in wine and grapes challenged by low-nutrient soils.

Read More

Influence of the number of CPPU applications on growth, mineral composition and Bunch Stem Necrosis incidence in table grape clusters

The forchlorfenuron (CPPU) application is recommended in table-grape after fruit-set to boost berry sizing, albeit growers also apply CPPU during pre-flowering with controversial advantages. We examined the effect of single (BBCH 15) and double (BBCH 15 and 57) CPPU applications (2.25 mg/L a.s.) in a commercial vineyard. At each time, 75-100 bunches belonging to 6-9 vines were sprayed, and compared with unsprayed (CTRL). Leaf stomatal conductance (gs), cluster stem diameter and length were measured. At harvest, 25 berries/repetition were sampled for chemical composition, BSN incidence was counted (N° necrotic laterals/10 cm of stem) in 40 bunches/repetition. To test the role of air VPD on mineral composition, at BBCH 77, 50 CTRL clusters were bagged to induce a low VPD.

Read More

On sample preparation methods for fermentative beverage VOCs profiling by GCxGC-TOFMS

Study the influence of sample preparation methods on the volatile organic compounds (VOCs) profiling for fermentative beverages by GCxGC-TOFMS analysis. METHODS: Five common sample preparation methods were tested on pooled red wine, white wine, cider, and beer. Studied methods were DHS, Liquid-liquid extraction, mSBSE, SPE and SPME. VOCs were analyzed by GCxGC-TOFMS followed by data analysis with ChromaTOF. RESULTS: The volatile organic compounds (VOCs) profiling results were very dependent on the sample preparation methods.

Read More