Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia


Citation

Teh Christopher Boon Sung, . and Iba Jane, . Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia. pp. 297-302. ISSN 1511-3701

Abstract

The purpose of this study was to determine the accuracy of the Saxton-Rawls method in estimating the soil water characteristics of a wide range of mineral soils of Malaysia. This study found that it was necessary to calibrate the Saxton-Rawls method for the soils of Malaysia. The developed equation for calibration was Pi a . Pi(1 - Pi) where Pi and Pi are the uncalibrated and calibrated estimated values respectively for the soil sample no. i and the parameter values of a were 2.225 1.605 and 1.528 (for saturation field capacity and permanent wilting point) respectively. The calibrated method was validated against three independent soil data sets. The validation tests showed that the calibrated method remained stable and was more accurate than that without any calibration by an average between 8 to 49.


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Abstract

The purpose of this study was to determine the accuracy of the Saxton-Rawls method in estimating the soil water characteristics of a wide range of mineral soils of Malaysia. This study found that it was necessary to calibrate the Saxton-Rawls method for the soils of Malaysia. The developed equation for calibration was Pi a . Pi(1 - Pi) where Pi and Pi are the uncalibrated and calibrated estimated values respectively for the soil sample no. i and the parameter values of a were 2.225 1.605 and 1.528 (for saturation field capacity and permanent wilting point) respectively. The calibrated method was validated against three independent soil data sets. The validation tests showed that the calibrated method remained stable and was more accurate than that without any calibration by an average between 8 to 49.

Additional Metadata

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Item Type: Article
AGROVOC Term: Mineral soils
AGROVOC Term: Soil water
AGROVOC Term: Water saturation
AGROVOC Term: Organic matter
AGROVOC Term: Soil water retention
AGROVOC Term: Soil texture
AGROVOC Term: Wilting point
AGROVOC Term: Malaysia
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:27
URI: http://webagris.upm.edu.my/id/eprint/22832

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