Citation
Syed Omar Syed Rastan, . and Shamshuddin Jusop, . (1997) Amelioration of soil acidity in highly weathered tropical soils. [Proceedings Paper]
Abstract
Highly weathered soils in the tropics are acidic. The soils contain high amounts of exchangeable AI and deficient in Ca and/or Mg which limit crop growth. Our study aimed at determining the reactions taking place in the soils and to evaluate the effectiveness of dolomitic limestone GML and gypsum as soil acidity ameliorants. The study showed that there was clear evidence to indicate the accumulation of Cainthezone of limeapplication. Subsoil Ca deficiency can be alleviated by applying limestone together with gypsum. Gypsum can be used to ameliorate Oxisols having high amounts of oxides but not recommended to ameliorate Ultisols having high exchangeable AI. Gypsum application onto the Oxisols can increase soil pH and negative charge via replacement of OH- by SO42-.
Download File
Full text available from:
|
Abstract
Highly weathered soils in the tropics are acidic. The soils contain high amounts of exchangeable AI and deficient in Ca and/or Mg which limit crop growth. Our study aimed at determining the reactions taking place in the soils and to evaluate the effectiveness of dolomitic limestone GML and gypsum as soil acidity ameliorants. The study showed that there was clear evidence to indicate the accumulation of Cainthezone of limeapplication. Subsoil Ca deficiency can be alleviated by applying limestone together with gypsum. Gypsum can be used to ameliorate Oxisols having high amounts of oxides but not recommended to ameliorate Ultisols having high exchangeable AI. Gypsum application onto the Oxisols can increase soil pH and negative charge via replacement of OH- by SO42-.
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: | Soil acidity |
| AGROVOC Term: | Tropical soils |
| AGROVOC Term: | Dolomitic lime amendment |
| AGROVOC Term: | Crops |
| AGROVOC Term: | Gypsum |
| AGROVOC Term: | Oxisols |
| AGROVOC Term: | Groundnuts |
| AGROVOC Term: | Rubber |
| AGROVOC Term: | Cocoa industry |
| AGROVOC Term: | Palm oils |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:14 |
| URI: | http://webagris.upm.edu.my/id/eprint/12168 |
Actions (login required)
 |
View Item |
