Multi-electrode 3D resistivity imaging of alfalfa root zone

Amato, Mariana; Bitella, Giovanni; Rossi, Roberta; Gómez, José A.; Lovelli, Stella; Gomes, João

doi:10.1016/j.eja.2009.08.005

Cited by 75 publications

(74 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The success of electrical resistivity is based on its sensitivity to soil properties, including water (Friedman, 2005;Hadzick et al, 2011;Brillante et al, 2014a). It can be implemented for many purposes, like soil texture mapping (Triantafilis and Lesch, 2005); assessment of coarse element content in soils (Tetegan et al, 2012); the study of soil structure and compaction (Besson et al, 2004), soil hydraulic conductivity (Doussan and Ruy, 2009), and soil horizonation (Tabbagh et al, 2000); assessment of the effect of different tillage systems (Basso et al, 2010); map root distribution and quantification of biomass (Amato et al, 2008(Amato et al, , 2009Rossi et al, 2011) and absorption (Srayeddin and Doussan, 2009); agricultural management, especially in precision agriculture (Jaynes et al, 2005;Corwin and Lesch, 2005;Andrenelli et al, 2013;André et al, 2012); and in the evaluation of soil volume wetness and transpirable soil water both at the plot scale (Michot et al, 2003;Attia Al Hagrey, 2007;Werban et al, 2008;Garré et al, 2011Garré et al, , 2013Brillante et al, 2014a, to name but a few) and at the field scale (Besson et al, 2010), with interesting perspectives for applications in plant ecophysiology.…”

Section: Electrical Imaging Of the Soil Watermentioning

confidence: 99%

The use of soil electrical resistivity to monitor plant and soil water relationships in vineyards

Brillante

Mathieu

Bois

et al. 2015

SOIL

View full text Add to dashboard Cite

Abstract. Soil water availability deeply affects plant physiology. In viticulture it is considered a major contributor to the "terroir" effect. The assessment of soil water in field conditions is a difficult task, especially over large surfaces. New techniques are therefore required in order to better explore variations of soil water content in space and time with low disturbance and with great precision. Electrical resistivity tomography (ERT) meets these requirements for applications in plant sciences, agriculture and ecology. In this paper, possible techniques to develop models that allow the use of ERT to spatialise soil water available to plants are reviewed. An application of soil water monitoring using ERT in a grapevine plot in Burgundy (north-east France) during the vintage 2013 is presented. We observed the lateral heterogeneity of ERT-derived fraction of transpirable soil water (FTSW) variations, and differences in water uptake depend on grapevine water status (leaf water potentials measured both at predawn and at solar noon and contemporary to ERT monitoring). Active zones in soils for water movements were identified. The use of ERT in ecophysiological studies, with parallel monitoring of plant water status, is still rare. These methods are promising because they have the potential to reveal a hidden part of a major function of plant development: the capacity to extract water from the soil.

show abstract

Section: Electrical Imaging Of the Soil Watermentioning

confidence: 99%

The use of soil electrical resistivity to monitor plant and soil water relationships in vineyards

Brillante

Mathieu

Bois

et al. 2015

SOIL

View full text Add to dashboard Cite

show abstract

“…In particular, ERT has been used to characterize RWU and root systems (Garré et al, 2011;Michot et al, 2001Michot et al, , 2003Srayeddin and Doussan, 2009). Amato et al (2009Amato et al ( , 2010 tested the ability of 3-D ERT for quantifying root biomass on herbaceous plants. Beff et al (2013) used 3-D ERT for monitoring soil water content in a maize field during late growing seasons.…”

Section: G Cassiani Et Al: Monitoring and Modelling Of Soil-plant Imentioning

confidence: 99%

Monitoring and modelling of soil–plant interactions: the joint use of ERT, sap flow and eddy covariance data to characterize the volume of an orange tree root zone

Cassiani

Boaga

Vanella

et al. 2015

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Mass and energy exchanges between soil, plants and atmosphere control a number of key environmental processes involving hydrology, biota and climate. The understanding of these exchanges also play a critical role for practical purposes e.g. in precision agriculture. In this paper we present a methodology based on coupling innovative data collection and models in order to obtain quantitative estimates of the key parameters of such complex flow system. In particular we propose the use of hydro-geophysical monitoring via "time-lapse" electrical resistivity tomography (ERT) in conjunction with measurements of plant transpiration via sap flow and evapotranspiration (ET) from eddy covariance (EC). This abundance of data is fed to spatially distributed soil models in order to characterize the distribution of active roots. We conducted experiments in an orange orchard in eastern Sicily (Italy), characterized by the typical Mediterranean semi-arid climate. The subsoil dynamics, particularly influenced by irrigation and root uptake, were characterized mainly by the ERT set-up, consisting of 48 buried electrodes on 4 instrumented micro-boreholes (about 1.2 m deep) placed at the corners of a square (with about 1.3 m long sides) surrounding the orange tree, plus 24 mini-electrodes on the surface spaced 0.1 m on a square grid. During the monitoring, we collected repeated ERT and time domain reflectometry (TDR) soil moisture measurements, soil water sampling, sap flow measurements from the orange tree and EC data. We conducted a laboratory calibration of the soil electrical properties as a function of moisture content and porewater electrical conductivity. Irrigation, precipitation, sap flow and ET data are available allowing for knowledge of the system's long-term forcing conditions on the system. This information was used to calibrate a 1-D Richards' equation model representing the dynamics of the volume monitored via 3-D ERT. Information on the soil hydraulic properties was collected from laboratory and field experiments. The successful results of the calibrated modelling exercise allow for the quantification of the soil volume interested by root water uptake (RWU). This volume is much smaller (with a surface area less than 2 m 2 , and about 40 cm thick) than expected and assumed in the design of classical drip irrigation schemes that prove to be losing at least half of the irrigated water which is not taken up by the plants.

show abstract

“…They describe methods and models to calibrate ER using TDR measurements. Several authors have also described the distribution and biomass of tree roots using ERT (Amato et al, 2008(Amato et al, , 2009Zenone et al, 2008;Al Hagrey and Petersen, 2011;Rossi et al, 2011). Root presence in the soil is characterized by a highly resistive area close to the tree trunk (Amato et al, 2008;Al Hagrey, 2007), and soil ER varies with root biomass density (Rossi et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Nonstationarity of the electrical resistivity and soil moisture relationship in a heterogeneous soil system: a case study

Michot

Thomas

Adam

2016

SOIL

View full text Add to dashboard Cite

Abstract. Understanding the role of vegetation in the interface between the atmosphere and groundwater is the most decisive key in analyzing the processes involved in water transfer. The main effect of vegetation is its root water uptake, which significantly modifies the processes involved in water transfer in the vadose zone. This paper focuses on mapping temporal and spatial changes in soil moisture using electrical resistivity tomography (ERT). The main objective is to assess how electrical resistivity (ER) is useful for mapping water distribution along a heterogeneous toposequence crossed by a hedgerow. Ten ERT were performed over the studied period for a 28 m long toposequence and compared to matric potential and groundwater level measurements. Soil volumetric water content (VWC) was predicted with two methods: (i) from ER using the Waxman and Smits model (ii) and from matric potential using an experimental retention curve fitted by a Van Genuchten model. Probability density functions (PDFs) of our set of data show that the largest change in mean ER and matric potential was observed in the topsoil layer. We then analyzed the consistency between ER and point measurements in this layer by extracting the arrays at the junction of ER grids and point measurements. PDFs of ER maps at each monitoring time (from T01 to T10) were also calculated to select the most contrasting distributions, corresponding to the wettest (T06) and driest states (T10). Results of ER were consistent with matric-potential measurements, with two different behaviors for locations inside and outside the root zone. A consistent correlation between VWC values from the Waxman and Smits model and those obtained from the retention curve was observed outside the root zone. The heterogeneous soil system inside the root zone shows a different pattern in this relationship. A shift in the relationship between ER and soil moisture for the locations outside and inside the root zone highlights the nonstationarity between wet and dry periods inside the root zone. The equivocal behavior of this relationship shows the limitation of using ER to predict soil moisture in a heterogeneous soil system. Such systems were actually related to the high hedgerow root density and also to a particular topographical context (ditch and bank) that is encountered in Brittany and throughout northwestern Europe.

show abstract

Multi-electrode 3D resistivity imaging of alfalfa root zone

Cited by 75 publications

References 42 publications

The use of soil electrical resistivity to monitor plant and soil water relationships in vineyards

The use of soil electrical resistivity to monitor plant and soil water relationships in vineyards

Monitoring and modelling of soil–plant interactions: the joint use of ERT, sap flow and eddy covariance data to characterize the volume of an orange tree root zone

Nonstationarity of the electrical resistivity and soil moisture relationship in a heterogeneous soil system: a case study

Contact Info

Product

Resources

About