Charge characteristics in relation to mineralogy of selected soils from South-east Asia
The mineralogy and charge characteristics of 7 soils from the Philippines, Indonesia and Malaysia were studied. The soils consisted of an Entisol, 3 Alfisols, an Andisol and 2 Oxisols. Smectite, mica and quartz were present in the clay fraction of the Entisol. In the Alfisols, smectite and kaolini...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universiti Putra Malaysia Press
1996
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/3545/1/Charge_Characteristics_in_Relation_to_Mineralogy_of_Selected_Soils.pdf |
| _version_ | 1825943508613070848 |
|---|---|
| author | Jusop, Shamsuddin Salleh, Ruziah Mohd Hanif, Ahmad Husni Awang, Kamis |
| author_facet | Jusop, Shamsuddin Salleh, Ruziah Mohd Hanif, Ahmad Husni Awang, Kamis |
| author_sort | Jusop, Shamsuddin |
| collection | UPM |
| description | The mineralogy and charge characteristics of 7 soils from the Philippines, Indonesia and Malaysia were studied.
The soils consisted of an Entisol, 3 Alfisols, an Andisol and 2 Oxisols. Smectite, mica and quartz were present in
the clay fraction of the Entisol. In the Alfisols, smectite and kaolinite were the dominant minerals. The Andisol was
dominated by halloysite, whereas the Oxisols were dominated by kaolinite and oxides. The amount of kaolinite
increased towards the surface, while halloysite decreased, indicating the transformation of halloysite to kaolinite
during the course of weathering. Differences in mineralogy of the various soil types were reflected clearly in the
differences in charge characteristics. Soils with smectite (Entisol and Alfisol) had high a negative charge. The
Andisol, which contained halloysite, and the Oxisol, with kaolinite and oxides, had high amounts ofpositive charge,
but moderate amounts ofnegative charge. The availability ofCa in the soils depended upon exchangeable Ca and the
efJective cation exchange capacity (ECEC). |
| first_indexed | 2024-03-06T07:01:26Z |
| format | Article |
| id | upm.eprints-3545 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T07:01:26Z |
| publishDate | 1996 |
| publisher | Universiti Putra Malaysia Press |
| record_format | dspace |
| spelling | upm.eprints-35452015-09-04T03:48:31Z http://psasir.upm.edu.my/id/eprint/3545/ Charge characteristics in relation to mineralogy of selected soils from South-east Asia Jusop, Shamsuddin Salleh, Ruziah Mohd Hanif, Ahmad Husni Awang, Kamis The mineralogy and charge characteristics of 7 soils from the Philippines, Indonesia and Malaysia were studied. The soils consisted of an Entisol, 3 Alfisols, an Andisol and 2 Oxisols. Smectite, mica and quartz were present in the clay fraction of the Entisol. In the Alfisols, smectite and kaolinite were the dominant minerals. The Andisol was dominated by halloysite, whereas the Oxisols were dominated by kaolinite and oxides. The amount of kaolinite increased towards the surface, while halloysite decreased, indicating the transformation of halloysite to kaolinite during the course of weathering. Differences in mineralogy of the various soil types were reflected clearly in the differences in charge characteristics. Soils with smectite (Entisol and Alfisol) had high a negative charge. The Andisol, which contained halloysite, and the Oxisol, with kaolinite and oxides, had high amounts ofpositive charge, but moderate amounts ofnegative charge. The availability ofCa in the soils depended upon exchangeable Ca and the efJective cation exchange capacity (ECEC). Universiti Putra Malaysia Press 1996 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3545/1/Charge_Characteristics_in_Relation_to_Mineralogy_of_Selected_Soils.pdf Jusop, Shamsuddin and Salleh, Ruziah and Mohd Hanif, Ahmad Husni and Awang, Kamis (1996) Charge characteristics in relation to mineralogy of selected soils from South-east Asia. Pertanika Journal of Tropical Agricultural Science, 19 (1). pp. 43-53. ISSN 0126-6128 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2019%20(1)%20Apr.%201996/JTAS%20Vol.19%20(1)%201996%20(Pg%2043-53).pdf |
| spellingShingle | Jusop, Shamsuddin Salleh, Ruziah Mohd Hanif, Ahmad Husni Awang, Kamis Charge characteristics in relation to mineralogy of selected soils from South-east Asia |
| title | Charge characteristics in relation to mineralogy of selected soils from South-east Asia |
| title_full | Charge characteristics in relation to mineralogy of selected soils from South-east Asia |
| title_fullStr | Charge characteristics in relation to mineralogy of selected soils from South-east Asia |
| title_full_unstemmed | Charge characteristics in relation to mineralogy of selected soils from South-east Asia |
| title_short | Charge characteristics in relation to mineralogy of selected soils from South-east Asia |
| title_sort | charge characteristics in relation to mineralogy of selected soils from south east asia |
| url | http://psasir.upm.edu.my/id/eprint/3545/1/Charge_Characteristics_in_Relation_to_Mineralogy_of_Selected_Soils.pdf |
| work_keys_str_mv | AT jusopshamsuddin chargecharacteristicsinrelationtomineralogyofselectedsoilsfromsoutheastasia AT sallehruziah chargecharacteristicsinrelationtomineralogyofselectedsoilsfromsoutheastasia AT mohdhanifahmadhusni chargecharacteristicsinrelationtomineralogyofselectedsoilsfromsoutheastasia AT awangkamis chargecharacteristicsinrelationtomineralogyofselectedsoilsfromsoutheastasia |