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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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Estimation of the water retention curve for unsaturated clay
Canadian Journal of Soil Science, 2011Mir Mohammad Hosseini, S. M., Ganjian, N. and Pashang Pisheh, Y. 2011. Estimation of the water retention curve for unsaturated clay. Can. J. Soil Sci. 91: 543–549. Extensive laboratory tests are essential in order to determine the soil water retention curve, defined as the relationship between water content and suction, in an unsaturated soil.
Seid Majdeddin Mir Mohammad Hosseini +2 more
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A new equation for the soil water retention curve
European Journal of Soil Science, 2014Summary The soil water retention curve is a fundamental characteristic of unsaturated zone flow and transport properties. Recent studies show that an air‐entry value is needed in a soil water retention equation in order to provide a better prediction of relative hydraulic conductivity. A new equation considering the air‐entry value is
Jiao, JJJ, Kuang, X
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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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Characterization of the water retention curves of Everglades wetland soils
Geoderma, 2021Abstract Alterations to the natural hydrology of wetlands like the Everglades have increased the presence of unsaturated zones in typically inundated soil environments. Understanding soil moisture dynamics through numerical modeling requires a large dataset of soil hydraulic parameters (SHPs) due to the spatially variable nature of hydromorphic soils
Anupama John +2 more
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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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Determination of the Soil Water Retention Curve with Tensiometers
2007An alternative technique for the determination of the soil water retention curve has recently been proposed whereby a tensiometer is used to measure soil suction and a balance to record the water content variations. The soil water retention curve is obtained by drying the soil either continuously or by stages (i.e.
Gallipoli, D +4 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 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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Equation for Extending Water‐Retention Curves to Dryness
Soil Science Society of America Journal, 1991Abstract Simple water‐retention functions in current use do not predict zero water content at oven dryness. Using the Campbell equation θ = a ψ ‐c = θ s
P. J. Ross, J. Williams, K. L. Bristow
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