Physical properties of soils with low activity clays
Tropical Alfisols, Ultisols, and Oxisols are soils with predominantly low activity clays. Together these soil orders cover a vast part of the subhumid and humid tropics. Alfisols and Ultisols have less stable structures than Oxisols. Alfisols and Ultisols have low available water holding capacity, a...
| Autores principales: | , |
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| Formato: | Conference Proceedings |
| Lenguaje: | Inglés |
| Publicado: |
1984
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| Acceso en línea: | https://hdl.handle.net/10568/177128 |
| _version_ | 1855529181527408640 |
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| author | Lal, R. Greenland, D.J |
| author_browse | Greenland, D.J Lal, R. |
| author_facet | Lal, R. Greenland, D.J |
| author_sort | Lal, R. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Tropical Alfisols, Ultisols, and Oxisols are soils with predominantly low activity clays. Together these soil orders cover a vast part of the subhumid and humid tropics. Alfisols and Ultisols have less stable structures than Oxisols. Alfisols and Ultisols have low available water holding capacity, are easily compacted, and, in spite of low soil erodibility, may suffer accelerated soil erosion under the high erosivity of the climate of the humid tropics.
Soil physical properties are highly variable. Shallow-rooted seasonal crops suffer from periodic drought stress even i' regions of high annual rainfall.
If soil erosion is not controlled and physical properties are not maintained at levels favorable to crop production, other inputs are easily wasted. Promising
soil management techniques include no-till and mulch farming, agro-forestry, frequent use of leguminous cover crops in the rotation, and mixed cropping systems. |
| format | Conference Proceedings |
| id | CGSpace177128 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1984 |
| publishDateRange | 1984 |
| publishDateSort | 1984 |
| record_format | dspace |
| spelling | CGSpace1771282025-10-16T01:06:14Z Physical properties of soils with low activity clays Lal, R. Greenland, D.J clay soils physical properties soil erosion subhumid humid tropics upland soils soil Tropical Alfisols, Ultisols, and Oxisols are soils with predominantly low activity clays. Together these soil orders cover a vast part of the subhumid and humid tropics. Alfisols and Ultisols have less stable structures than Oxisols. Alfisols and Ultisols have low available water holding capacity, are easily compacted, and, in spite of low soil erodibility, may suffer accelerated soil erosion under the high erosivity of the climate of the humid tropics. Soil physical properties are highly variable. Shallow-rooted seasonal crops suffer from periodic drought stress even i' regions of high annual rainfall. If soil erosion is not controlled and physical properties are not maintained at levels favorable to crop production, other inputs are easily wasted. Promising soil management techniques include no-till and mulch farming, agro-forestry, frequent use of leguminous cover crops in the rotation, and mixed cropping systems. 1984 2025-10-15T17:13:39Z 2025-10-15T17:13:39Z Conference Proceedings https://hdl.handle.net/10568/177128 en Limited Access application/pdf Lal, R. & Greenland, D.J. (1984). Physical properties of soils with low activity clays. In Proceedings of a Symposium on Low Activity Clay (LAC) Soils, Las Vega, NV. 26–30 Nov. 1984. Washington, DC. (pp. 63-89). |
| spellingShingle | clay soils physical properties soil erosion subhumid humid tropics upland soils soil Lal, R. Greenland, D.J Physical properties of soils with low activity clays |
| title | Physical properties of soils with low activity clays |
| title_full | Physical properties of soils with low activity clays |
| title_fullStr | Physical properties of soils with low activity clays |
| title_full_unstemmed | Physical properties of soils with low activity clays |
| title_short | Physical properties of soils with low activity clays |
| title_sort | physical properties of soils with low activity clays |
| topic | clay soils physical properties soil erosion subhumid humid tropics upland soils soil |
| url | https://hdl.handle.net/10568/177128 |
| work_keys_str_mv | AT lalr physicalpropertiesofsoilswithlowactivityclays AT greenlanddj physicalpropertiesofsoilswithlowactivityclays |