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

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 equatio...

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Main Authors: Teh, Christopher Boon Sung, Iba, Jane
Format: Article
Language:English
Published: Universiti Putra Malaysia Press 2010
Online Access:http://psasir.upm.edu.my/id/eprint/11481/1/Accuracy_of_the_Saxton-Rawls.pdf
http://psasir.upm.edu.my/id/eprint/11481/
http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2033%20(2)%20Aug.%202010/19%20Pg%20297-302.pdf
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spelling my.upm.eprints.114812015-09-23T03:53:00Z http://psasir.upm.edu.my/id/eprint/11481/ Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia Teh, Christopher Boon Sung Iba, Jane 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 Pti = a $ Pi ]1 - Pig, where Pi and Pi t 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%. Universiti Putra Malaysia Press 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/11481/1/Accuracy_of_the_Saxton-Rawls.pdf Teh, Christopher Boon Sung and Iba, Jane (2010) Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia. Pertanika Journal of Tropical Agricultural Science, 33 (2). pp. 297-302. ISSN 1511-3701 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2033%20(2)%20Aug.%202010/19%20Pg%20297-302.pdf
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description 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 Pti = a $ Pi ]1 - Pig, where Pi and Pi t 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%.
format Article
author Teh, Christopher Boon Sung
Iba, Jane
spellingShingle Teh, Christopher Boon Sung
Iba, Jane
Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia
author_facet Teh, Christopher Boon Sung
Iba, Jane
author_sort Teh, Christopher Boon Sung
title Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia
title_short Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia
title_full Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia
title_fullStr Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia
title_full_unstemmed Accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of Malaysia
title_sort accuracy of the saxton-rawls method for estimating the soil water characteristics for mineral soils of malaysia
publisher Universiti Putra Malaysia Press
publishDate 2010
url http://psasir.upm.edu.my/id/eprint/11481/1/Accuracy_of_the_Saxton-Rawls.pdf
http://psasir.upm.edu.my/id/eprint/11481/
http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2033%20(2)%20Aug.%202010/19%20Pg%20297-302.pdf
_version_ 1643824820646838272
score 13.211869

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