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

2014 ◽  
Vol 1 (1) ◽  
pp. 677-707 ◽  
Author(s):  
L. Brillante ◽  
O. Mathieu ◽  
B. Bois ◽  
C. van Leeuwen ◽  
J. Lévêque
Keyword(s):  
Electrical Resistivity ◽  
Soil Water ◽  
Water Status ◽  
New Techniques ◽  
Resistivity Tomography ◽  
Major Function ◽  
North East ◽  
Solar Noon ◽  
Plant Sciences ◽  
Soil Electrical Resistivity

Abstract. Soil water availability deeply affects plant physiology. In viticulture it is considered as a major contributor to the "terroir" expression. The assessment of soil water in field conditions is a difficult task especially over large surfaces. New techniques, are therefore required 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 of 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 depending 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.

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

SOIL ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 273-286 ◽  
Author(s):  
L. Brillante ◽  
O. Mathieu ◽  
B. Bois ◽  
C. van Leeuwen ◽  
J. Lévêque
Keyword(s):  
Electrical Resistivity ◽  
Soil Water ◽  
Water Status ◽  
New Techniques ◽  
Resistivity Tomography ◽  
Major Function ◽  
North East ◽  
Solar Noon ◽  
Plant Sciences ◽  
Soil Electrical Resistivity

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.

scholarly journals Combining Electrical Resistivity Tomography and Satellite Images for Improving Evapotranspiration Estimates of Citrus Orchards

2019 ◽  
Vol 11 (4) ◽  
pp. 373 ◽  
Author(s):  
Daniela Vanella ◽  
Juan Ramírez-Cuesta ◽  
Diego Intrigliolo ◽  
Simona Consoli
Keyword(s):  
Electrical Resistivity ◽  
Water Stress ◽  
Soil Water ◽  
Electrical Resistivity Tomography ◽  
New Technologies ◽  
Water Status ◽  
Irrigation Season ◽  
Resistivity Tomography ◽  
Near Surface ◽  
Near Surface Geophysics

An adjusted satellite-based model was proposed with the aim of improving spatially distributed evapotranspiration (ET) estimates under plant water stress conditions. Remote sensing data and near surface geophysics information, using electrical resistivity tomography (ERT), were used in a revised version of the original dual crop coefficient (Kc) FAO-56 approach. Sentinel 2-A imagery were used to compute vegetation indices (VIs) required for spatially estimating ET. The potentiality of the ERT technique was exploited for tracking the soil wetting distribution patterns during and after irrigation phases. The ERT-derived information helped to accurately estimate the wet exposed fraction (few) and therefore the water evaporated from the soil surface into the dual Kc FAO-56 approach. Results, validated by site-specific ET measurements (ETEC) obtained using the eddy covariance (EC) technique, showed that ERT-adjusted ET estimates (ETERT) were considerably reduced (15%) when compared with the original dual Kc FAO-56 approach (ETFAO), soil evaporation overestimation being the main reason for these discrepancies. Nevertheless, ETFAO and ETERT showed overestimations of 64% and 40% compared to ETEC. This is because both approaches determine ET under standard conditions without water limitation, whereas EC is able to determine ET even under soil water deficit conditions. From the comparison between ETEC and ETERT, the water stress coefficient was experimentally derived, reaching a mean value for the irrigation season of 0.74. The obtained results highlight how new technologies for soil water status monitoring can be incorporated for improving ET estimations, particularly under drip irrigation conditions.

Soil water content monitoring on a dike model using electrical resistivity tomography

2007 ◽  
Vol 6 (2) ◽  
pp. 123-132 ◽  
Author(s):  
Joerg Rings ◽  
Alexander Scheuermann ◽  
Kwasi Preko ◽  
Christian Hauck
Keyword(s):  
Electrical Resistivity ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Electrical Resistivity Tomography ◽  
Resistivity Tomography

scholarly journals The role of geophysical ERT method to evaluate the leakproofness of diapragm wall of deep foundation trenches on the example of the construction of retail and office complex in Lublin, Poland

2014 ◽  
Vol 31 (2) ◽  
pp. 91-99 ◽  
Author(s):  
Grzegorz Pacanowski ◽  
Paweł Czarniak ◽  
Anna Bąkowska ◽  
Radosław Mieszkowski ◽  
Fabian Welc
Keyword(s):  
Electrical Resistivity ◽  
Soil Water ◽  
Hydraulic Fracture ◽  
Electrical Resistivity Tomography ◽  
Geophysical Methods ◽  
Carbonate Sediments ◽  
Deep Foundation ◽  
Resistivity Tomography ◽  
Water Conditions ◽  
Soil Water Conditions

Abstract This paper addresses the problem of assessing the leakproofness of the bottom of a deep foundation trench, secured by cavity wall, using geophysical methods of electrical resistivity tomography. The study was conducted on a large construction project in Lublin, in a place where there are complicated soil-water conditions: the groundwater level is above the proposed depth of foundation trench, the subsoil is heterogeneous, and there are karsted and weathered carbonate sediments with confined aquifer below the bottom of the trench. A hydraulic fracture occurred at the bottom of the trench during the engineering works, which caused the water flow into the trench. In order to recognize the soil-water conditions the first stage of geophysical measurements of electrical resistivity tomography (ERT) was made. The applied methodology allowed to determine the extent of the hydraulic fracture zone within the bottom of foundation trench. In order to assess the leakproofness of Diaphragm Wall the geophysical ERT measurements were repeated (stage 2) A clear reduction in the value of the electrical resistivity of soils in the area of hydraulic fracture was caused by clay injection. The results of ERT measurements are discussed and graphically presented.

scholarly journals Time-lapse monitoring of root water uptake using electrical resistivity tomography and Mise-à-la-Masse: a vineyard infiltration experiment

2019 ◽  
Author(s):  
Benjamin Mary ◽  
Luca Peruzzo ◽  
Jacopo Boaga ◽  
Nicola Cenni ◽  
Myriam Schmutz ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Water Uptake ◽  
Electrical Resistivity Tomography ◽  
Time Lapse ◽  
Root Water Uptake ◽  
Resistivity Tomography ◽  
Infiltration Experiment

Abstract. This paper presents a time-lapse application of electrical methods (Electrical Resistivity Tomography – ERT – and Mise-à-la-Masse – MALM) for monitoring plant roots and their activity (root water uptake) during a controlled infiltration experiment. The use of non-invasive geophysical monitoring is of increasing interest as these techniques provide time-lapse imaging of processes that otherwise can only be measured at few specific spatial locations. The experiment here described was conducted in a vineyard in Bordeaux (France) and was focused on the behaviour of two neighbouring grapevines. The joint application of ERT and MALM has several advantages. While ERT in time-lapse mode is sensitive to changes in soil electrical resistivity and thus to the factors controlling it (mainly soil water content, in this context), MALM uses DC current injected in a tree stem to image where the plant-root system is in effective electrical contact with the soil at locations that are likely to be the same where root water uptake (RWU) takes place. Thus ERT and MALM provide complementary information about the root structure and activity. The experiment shows that the region of likely electrical current sources produced by MALM does not change significantly during the infiltration study time in spite of the strong changes of electrical resistivity caused by changes in soil water content. This fact, together with the evidence that current injection in the soil produces totally different patterns, corroborates the idea that this application of MALM highlights the active root density in the soil. When considering the electrical resistivity changes (as measured by ERT) inside the stationary volume of active roots delineated by MALM, the overall tendency is towards a resistivity increase, which can be linked to a decrease in soil water content caused by root water uptake. On the contrary, when considering the soil volume outside the MALM-derived root water uptake region, the electrical resistivity tends to decrease as an effect of soil water content increase caused by the infiltration. The results are particularly promising, and the method can be applied to a variety of scales including the laboratory scale where direct evidence of roots structure and root water uptake can help corroborate the approach. Once fully validated, the joint use of MALM and ERT can be used as a valuable tool to study the activity of roots under a wide variety of field conditions.

scholarly journals Imaging plant responses to water deficit using electrical resistivity tomography

2020 ◽  
Vol 454 (1-2) ◽  
pp. 261-281 ◽  
Author(s):  
Sathyanarayan Rao ◽  
Nolwenn Lesparre ◽  
Adrián Flores-Orozco ◽  
Florian Wagner ◽  
Andreas Kemna ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Soil Water ◽  
Water Deficit ◽  
Water Uptake ◽  
White Clover ◽  
Electrical Resistivity Tomography ◽  
Root Water Uptake ◽  
Soil Water Depletion ◽  
Resistivity Tomography ◽  
Water Depletion

Abstract Background and aims Monitoring root water uptake dynamics under water deficit (WD) conditions in fields are crucial to assess plant drought tolerance. In this study, we investigate the ability of Electrical Resistivity Tomography (ERT) to capture specific soil water depletion induced by root water uptake. Methods A combination of surface and depth electrodes with a high spatial resolution (10 cm) was used to map 2-D changes of bulk soil electrical conductivity (EC) in an agronomic trial with different herbaceous species. A synthetic experiment was performed with a mechanistic model to assess the ability of the electrode configuration to discriminate abstraction patterns due to roots. The impact of root segments was incorporated in the forward electrical model using the power-law mixing model. Results The time-lapse analysis of the synthetic ERT experiment shows that different root water uptake patterns can be delineated for measurements collected under WD conditions but not under wet conditions. Three indices were found (depletion amount, maximum depth, and spread), which allow capturing plant-specific water signatures based moisture profile changes derived from EC profiles. When root electrical properties were incorporated in the synthetic experiments, it led to the wrong estimation of the amount of water depletion, but a correct ranking of plants depletion depth. When applied to the filed data, our indices showed that Cocksfoot and Ryegrass had shallower soil water depletion zones than white clover and white clover combined with Ryegrass. However, in terms of water depletion amount, Cocksfoot consumed the largest amount of water, followed by White Clover, Ryegrass+White Clover mixture, and Ryegrass. Conclusion ERT is a well-suited method for phenotyping root water uptake ability in field trials under WD conditions.

scholarly journals Differences in soil electrical resistivity tomography due to soil water contents in an integrated agricultural system

2019 ◽  
Vol 54 ◽  
Author(s):  
Alberto Carlos de Campos Bernardi ◽  
Thomas Pitrat ◽  
Ladislau Marcelino Rabello ◽  
José Ricardo Macedo Pezzopane ◽  
Cristiam Bosi ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Soil Moisture ◽  
Agricultural System ◽  
Resistivity Tomography ◽  
Moisture Contents ◽  
Spatial Correlation Structure ◽  
Contact Sensor ◽  
Water Contents ◽  
Soil Electrical Resistivity ◽  
Resistivity Profiling

Abstract: The objective of this work was to characterize the spatial variability of soil electrical resistivity due to different soil moisture contents, in an integrated agricultural system. Soil electrical resistivity (ER) was measured with the Automatic Resistivity Profiling (ARP) contact sensor in two dates, in 2016, in a 9.7-ha area with different soil moisture contents. The obtained maps indicated that ER allowed delimiting the regions within the study area and pointing out differences in the movement and accumulation of water in the soil horizons. Although there is a trend of reduction in ER values with increasing soil moisture, the spatial correlation structure of ER is similar.

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