Citation
Van Ranst E., . and Boniao R., . and Shamshuddin Jusop, . and Baert G., . (1997) Impact of agriculture on chemical properties of soils on basalt from Mindanao the Philippines. [Proceedings Paper]
Abstract
Uncultivated and cultivated soils from Mindanao the Philippines were sampled and studied to determine the impact of agriculture on their chemical properties. The results of the study showed that cultivated soils having lost some organic matter due to oxidation have a lower CEC and a higher point of zero charge pHo; For these soils the capacity to retain cations has decreased to a certain extent. In the subsoils of both the soil types there is a tendency for the soil pH to coincide with pHo; reflecting development of positive charge in the soil of that zone. The sum of exchangeable bases and Al ECEC is found to be a good estimate of the CEC of the soils.
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Abstract
Uncultivated and cultivated soils from Mindanao the Philippines were sampled and studied to determine the impact of agriculture on their chemical properties. The results of the study showed that cultivated soils having lost some organic matter due to oxidation have a lower CEC and a higher point of zero charge pHo; For these soils the capacity to retain cations has decreased to a certain extent. In the subsoils of both the soil types there is a tendency for the soil pH to coincide with pHo; reflecting development of positive charge in the soil of that zone. The sum of exchangeable bases and Al ECEC is found to be a good estimate of the CEC of the soils.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal S 590.2 S683 1997 Call Number |
| AGROVOC Term: | Chemical properties |
| AGROVOC Term: | Soil physicochemical properties |
| AGROVOC Term: | Oxidation |
| AGROVOC Term: | Soil ph |
| AGROVOC Term: | Rainfall |
| AGROVOC Term: | Soil acidity |
| AGROVOC Term: | Clay |
| AGROVOC Term: | Vermiculites |
| AGROVOC Term: | Kaolinite |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:14 |
| URI: | http://webagris.upm.edu.my/id/eprint/12173 |
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