Citation
Shamshuddin J., . Laboratory studies on the release of cations and anions in acid sulfate soils from Pulau Lumut Selangor. pp. 257-264. ISSN 0126-6128
Abstract
Acid sulfate soils in Peninsular Malaysia are characterized by low pH and high amounts of Al. Alleviation of toxic ions in the soils by controlled drainage is recommended. However potential acidity remains in the soils due to slow release of toxic ions during mineral weathering. A study was conducted to determine the release of Al and other ions by repetitive extraction of samples from the field and by aerobic incubation of samples in the laboratory. The results showed that Al was released continuously from the soils even after the sixth extraction. When the soils were allowed to udergo free oxidation under aerobic conditions Al Mn Fe Ca Mg K Na and S were released into the soil solutions due to breakdown of clay minerals. Activities of these ions increased significantly resulting in an increase of electrical conductivity of the soil solution. Additionally pH of the soil solution dropped. These commonly observed properties of acid sulfate soils have great implications on their management practices.
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Abstract
Acid sulfate soils in Peninsular Malaysia are characterized by low pH and high amounts of Al. Alleviation of toxic ions in the soils by controlled drainage is recommended. However potential acidity remains in the soils due to slow release of toxic ions during mineral weathering. A study was conducted to determine the release of Al and other ions by repetitive extraction of samples from the field and by aerobic incubation of samples in the laboratory. The results showed that Al was released continuously from the soils even after the sixth extraction. When the soils were allowed to udergo free oxidation under aerobic conditions Al Mn Fe Ca Mg K Na and S were released into the soil solutions due to breakdown of clay minerals. Activities of these ions increased significantly resulting in an increase of electrical conductivity of the soil solution. Additionally pH of the soil solution dropped. These commonly observed properties of acid sulfate soils have great implications on their management practices.
Additional Metadata
| Item Type: | Article |
|---|---|
| Additional Information: | 2 tables; 3 graphs; 27 ref.; Summaries (En Ms) |
| AGROVOC Term: | MALASIA |
| AGROVOC Term: | SUELO ACIDO |
| AGROVOC Term: | PH |
| AGROVOC Term: | CATIONES/ ANIONES |
| AGROVOC Term: | OXIDACION |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:56 |
| URI: | http://webagris.upm.edu.my/id/eprint/20536 |
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