ESTIMATING VAN GENUCHTEN SOIL WATER RETENTION CURVE FROM SOME SOIL PHYSICAL PROPERTIES

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SEPASKHAH ALI REZA; BONDAR H.

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Journal: Iran Agricultural Research Year:2002 | Volume:21 | Issue:2 Page(s): 105-118

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Title

ESTIMATING VAN GENUCHTEN SOIL WATER RETENTION CURVE FROM SOME SOIL PHYSICAL PROPERTIES

Author(s)

SEPASKHAH ALI REZA | BONDAR H. | Issue Writer Certificate

Keywords

PEDO-TRANSFER FUNCTIONQ3

VAN GENUCHTENQ3

WATER RETENTION CURVEQ3

Abstract

The modeling of water movement through soils typically requires the functional representation of soil hydraulic properties, such as the WATER RETENTION CURVE. Among different water retention models, VAN GENUCHTEN (VG) model is an appropriate one. The objectives of this study were to quantify relationships between the VG model parameters and soil physical properties and to select equations that are useful for prediction of VG model for soil WATER RETENTION CURVE. Fifty four soil samples were used for soil water characteristics determination by ceramic plate extractor, soil particle size determination by hydrometer method, soil bulk density and soil organic matter. Multiple regressions were used to determine the relationships between m and hp (soil water suction at reflection point of the soil WATER RETENTION CURVE) and the aforementioned soil physical properties. The results indicated that multiple regression models may be used to estimate, with acceptable accuracy, the WATER RETENTION CURVE of VG type from soil sand content, bulk density and Organic matter percent. The proposed regression models were used for prediction of soil WATER RETENTION CURVE for three different soils with an acceptable accuracy.

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APA: Copy

SEPASKHAH, ALI REZA, & BONDAR, H.. (2002). ESTIMATING VAN GENUCHTEN SOIL WATER RETENTION CURVE FROM SOME SOIL PHYSICAL PROPERTIES. IRAN AGRICULTURAL RESEARCH, 21(2), 105-118. SID. https://sid.ir/paper/16147/en

Vancouver: Copy

SEPASKHAH ALI REZA, BONDAR H.. ESTIMATING VAN GENUCHTEN SOIL WATER RETENTION CURVE FROM SOME SOIL PHYSICAL PROPERTIES. IRAN AGRICULTURAL RESEARCH[Internet]. 2002;21(2):105-118. Available from: https://sid.ir/paper/16147/en

IEEE: Copy

ALI REZA SEPASKHAH, and H. BONDAR, “ESTIMATING VAN GENUCHTEN SOIL WATER RETENTION CURVE FROM SOME SOIL PHYSICAL PROPERTIES,” IRAN AGRICULTURAL RESEARCH, vol. 21, no. 2, pp. 105–118, 2002, [Online]. Available: https://sid.ir/paper/16147/en

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