Detecting soil water redistribution in subsurface drip irrigated processing tomatoes using electrical resistivity tomography, proximal sensing and hydrological modelling.

Autor: Raij-Hoffman I; Department of Land Air & Water Resources, University of California Davis, Davis, CA 95616, USA; Department of Biological and Agricultural Engineering, University of California Davis, Davis, CA 95616, USA., Vanella D; Dipartimento di Agricoltura, Alimentazione e Ambiente (Di3A), Università degli Studi di Catania, Via S. Sofia, 100, Catania 95123, Italy. Electronic address: daniela.vanella@unict.it., Ramírez-Cuesta JM; Dipartimento di Agricoltura, Alimentazione e Ambiente (Di3A), Università degli Studi di Catania, Via S. Sofia, 100, Catania 95123, Italy; Departamento de Ecología, Centro de Investigaciones sobre Desertificación (CIDE, CSIC-UV-GV), Moncada, Spain., Peddinti SR; Department of Land Air & Water Resources, University of California Davis, Davis, CA 95616, USA; Department of Biological and Agricultural Engineering, University of California Davis, Davis, CA 95616, USA., Kisekka I; Department of Land Air & Water Resources, University of California Davis, Davis, CA 95616, USA; Department of Biological and Agricultural Engineering, University of California Davis, Davis, CA 95616, USA.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2024 Feb 20; Vol. 912, pp. 169620. Date of Electronic Publication: 2023 Dec 28.
DOI: 10.1016/j.scitotenv.2023.169620
Abstrakt: In this study, multiple soil-plant-atmosphere continuum (SPAC) monitoring methodologies, including electrical resistivity tomography (ERT), proximal thermal sensing techniques, and micrometeorological data, were combined with two-dimensional (2-D) soil hydrological modelling using HYDRUS 2-D to explore the soil water redistribution, and infer the relative crop water status in a subsurface drip irrigated (SDI) processing tomato field located in California (Yolo County, USA). Specifically, time-lapse ERT surveys were performed at two transects distributed parallel and perpendicular, respectively, to the SDI line, during an irrigation event. The ERT results were compared to HYDRUS 2-D outputs and the relative differences were explained in the form of local heterogeneities in electrical resistivity (ER) changes, as a proxy for soil water content (SWC) variations. Concurrent simultaneous soil wetting and root water uptake during the last irrigation event of the season caused negligible changes in ER in the active root zone. Slight differences in ER were observed in the top 20 cm along the dripline, confirming that the emitter spacing is small enough to create a wetted strip along the processing tomato bed. These changes were also compared to SWC values measured with time domain reflectometry soil moisture sensors. A comparison between HYDRUS 2-D and ERT confirmed negligible changes in ER during irrigation due to simultaneous wetting and root water uptake processes. In addition, a good correlation was observed between the proximal sensed and the ERT results. Finally, the findings of this study underscore the necessity of using multiple methods for improving our knowledge of the SPAC system under real field conditions.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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