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Revisiting laboratory methods for measuring soil water retention curves
Soil Science Society of America Journal, 2023Abstract Traditional laboratory methods for measuring soil water retention curves (SWRCs) typically consist of suction tables, pressure cells, and pressure plate apparatus (i.e., traditional methods). However, technological advancement has resulted in newer methods based on precision mini‐tensiometers and dew ...
Parker, Nathaniel, Patrignani, Andres
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Closing the Loop of the Soil Water Retention Curve
Journal of Geotechnical and Geoenvironmental Engineering, 2015AbstractThe authors, to their knowledge for the first time, produced two complete principal soil water retention curves (SWRCs) under both positive and negative matric suction regimes. An innovative testing technique combining the transient water release and imbibition method (TRIM) and constant flow method (CFM) was used to identify the principal ...
N. Lu +3 more
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Nonisothermal Models for Soil–Water Retention Curve
Journal of Geotechnical and Geoenvironmental Engineering, 2018AbstractSeveral emerging problems in geotechnical and geoenvironmental engineering pose multiphysics problems involving nonisothermal processes in unsaturated soils.
Farshid Vahedifard +3 more
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Temperature Dependence of Soil Water Retention Curves
Soil Science Society of America Journal, 1986Abstract Effects of entrapped air volume and surface tension of soil solution are often regarded as the primary cause of temperature effects on the water retention curve. A procedure was developed to determine simultaneously the water characteristic curves and the volume of entrapped air for a glass beads medium and a Norfolk sandy ...
J. W. Hopmans, J. H. Dane
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A conceptual model of the soil water retention curve
Water Resources Research, 1998A conceptual model based on the assumption that soil structure evolves from a uniform random fragmentation process is proposed to define the water retention function. The fragmentation process determines the particle size distribution of the soil. The transformation of particles volumes into pore volumes via a power function and the adoption of the ...
Assouline, S., Tessier, D., Bruand, Ary
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2018
Soil/water retention curve (SWRC) is the relationship between soil/water matric potential and volumetric soil-water content at equilibrium above the reference (zero) level represented by the free water table at atmospheric pressure. SWRC is the basic soil characteristic needed as input data for simulation models. SWRCs have a hysteresis-like character,
Viliam Novák, Hana Hlaváčiková
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Soil/water retention curve (SWRC) is the relationship between soil/water matric potential and volumetric soil-water content at equilibrium above the reference (zero) level represented by the free water table at atmospheric pressure. SWRC is the basic soil characteristic needed as input data for simulation models. SWRCs have a hysteresis-like character,
Viliam Novák, Hana Hlaváčiková
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Estimation of the soil water retention curve using penetration resistance curve models
Computers and Electronics in Agriculture, 2018Abstract In this study, pedotransfer functions (PTFs) were developed for estimating the gravimetric water content based on the model of Dexter et al. (2008) using feed-forward artificial neural networks. Soil samples were collected from 148 locations in the West Azarbaijan, Hamedan, Fars, and Kurdistan provinces of Iran. The cation exchange capacity (
Hossein Bayat, Golnaz Ebrahim Zadeh
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Soil water retention curves determined in the laboratory and in the field
2022<p>Soil water retention curves (SWRCs) provide information on the energy status of soil water and its availability to plants and are therefore important for irrigation management. SWRCs have traditionally been determined in the laboratory.
Urša Pečan +2 more
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The influence of salinity on hysteresis of soil water‐retention curves
Hydrological Processes, 2012AbstractTaiwan is surrounded by the sea, and the southwestern seashores are suffering from a growing land subsidence problem caused by the excessive extraction of groundwater. There is also very serious intrusion by seawater along the coastline. These circumstances obstruct any land use, soil remediation or agriculture development in the area.
Kuo‐Chen Ma +2 more
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A Technique for Producing Soil Water Retention Curves
South African Forestry Journal, 1990SYNOPSIS Water retention curves compiled for specific soil types are an essential management and research tool in evaluating plant stress. The method of producing water retention curves by means of the 1500 kPa pressure extractor is described.
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