Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties

The purpose of this study were: 1) to compare the aggregate stability of individual aggregate size fractions, 2) to determine the interrelationship and efficiency of several aggregate stability indices, and 3) to determine the relationship and importance of organic matter and other soil constitue...

Full description

Saved in:

Bibliographic Details
Main Author:	Teh, Christopher Boon Sung
Format:	Thesis
Language:	English English
Published:	1996
Subjects:	Soil structure Soil profiles
Online Access:	http://psasir.upm.edu.my/id/eprint/10365/1/FP_1996_4_A.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.10365
record_format	uketd_dc
spelling	my-upm-ir.103652011-03-28T04:48:10Z Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties 1996 Teh, Christopher Boon Sung The purpose of this study were: 1) to compare the aggregate stability of individual aggregate size fractions, 2) to determine the interrelationship and efficiency of several aggregate stability indices, and 3) to determine the relationship and importance of organic matter and other soil constituents on aggregate stability. To compare the aggregate stability of individual aggregate size fractions, a mathematical model was developed to estimate the breakdown of individual aggregate size fractions in the wet-sieving (using nested sieves) method. This model was validated and calibrated by comparing the estimation values to the actual aggregate breakdown values by paired sample t-test, linear regression and prediction error sum of squares. The average percentage of stable aggregates for all aggregate size fractions were represented in an index called average intact aggregates (AlA). Factor analysis was used to determine the interrelationship and efficiency of several aggregate stability indices. Aggregate stability of eight soil samples were measured with eight indices: percentage of water-stable aggregates >0.3 mm (WSA >0.3) and >0.5 mm (WSA >0.5), AlA, water-dispersible clay (WDC), waterdispersible clay and silt (WDCS), mean weight diameter after wet-sieving (MWDw), turbidity percentage (TP), and clay ratio (CR). Soil structure Soil profiles 1996 Thesis http://psasir.upm.edu.my/id/eprint/10365/ http://psasir.upm.edu.my/id/eprint/10365/1/FP_1996_4_A.pdf application/pdf en public masters Universiti Pertanian Malaysia Soil structure Soil profiles Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Soil structure Soil profiles
spellingShingle	Soil structure Soil profiles Teh, Christopher Boon Sung Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties
description	The purpose of this study were: 1) to compare the aggregate stability of individual aggregate size fractions, 2) to determine the interrelationship and efficiency of several aggregate stability indices, and 3) to determine the relationship and importance of organic matter and other soil constituents on aggregate stability. To compare the aggregate stability of individual aggregate size fractions, a mathematical model was developed to estimate the breakdown of individual aggregate size fractions in the wet-sieving (using nested sieves) method. This model was validated and calibrated by comparing the estimation values to the actual aggregate breakdown values by paired sample t-test, linear regression and prediction error sum of squares. The average percentage of stable aggregates for all aggregate size fractions were represented in an index called average intact aggregates (AlA). Factor analysis was used to determine the interrelationship and efficiency of several aggregate stability indices. Aggregate stability of eight soil samples were measured with eight indices: percentage of water-stable aggregates >0.3 mm (WSA >0.3) and >0.5 mm (WSA >0.5), AlA, water-dispersible clay (WDC), waterdispersible clay and silt (WDCS), mean weight diameter after wet-sieving (MWDw), turbidity percentage (TP), and clay ratio (CR).
format	Thesis
qualification_level	Master's degree
author	Teh, Christopher Boon Sung
author_facet	Teh, Christopher Boon Sung
author_sort	Teh, Christopher Boon Sung
title	Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties
title_short	Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties
title_full	Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties
title_fullStr	Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties
title_full_unstemmed	Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties
title_sort	soil aggregate stability: its evaluation and relation to organic matter constituents and other soil properties
granting_institution	Universiti Pertanian Malaysia
granting_department	Faculty of Agriculture
publishDate	1996
url	http://psasir.upm.edu.my/id/eprint/10365/1/FP_1996_4_A.pdf
_version_	1747811105957216256

Soil Aggregate Stability: Its Evaluation and Relation to Organic Matter Constituents and Other Soil Properties

Similar Items