La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos
In two hillside areas in the north of the Cauca department, with mean annual rainfalls between 1600 and 2400mm and soils classified as Inceptisols, erosion plots were established and several different soil management systems were evaluated during seven years. The turbidimetry technique was used with...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Español |
| Published: |
2000
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44350 |
| _version_ | 1855524202792091648 |
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| author | Castillo Franco, J.A. Amézquita Collazos, Edgar Muller-Samann, KM |
| author_browse | Amézquita Collazos, Edgar Castillo Franco, J.A. Muller-Samann, KM |
| author_facet | Castillo Franco, J.A. Amézquita Collazos, Edgar Muller-Samann, KM |
| author_sort | Castillo Franco, J.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In two hillside areas in the north of the Cauca department, with mean annual rainfalls between 1600 and 2400mm and soils classified as Inceptisols, erosion plots were established and several different soil management systems were evaluated during seven years. The turbidimetry technique was used with soil samples from the treatments to characterize structural stability of the aggregates. The method is based upon the fact that water as an extrinsic factor of the soil is an important agent in the destruction of the aggregates, causing the formation of smaller aggregate units and the dispersion of the finest materials (clays).
Aggregates with diameters between 1-2 and 2-4mm from the different treatments were evaluated. Concentration readings were made for the first two minutes and 2 hours after the experiment. Results show that differences exist regarding the stability of aggregates between the crop rotations evaluated and that the technique is sensitive to the determination of structural stability of soils under different cultivation systems, including the input of organic materials. It was also observed that there is a clear tendency to a higher concentration of soil particles in the suspension when the aggregates are finer, this response being approximate to the results obtained when said aggregates were exposed to a rainfall simulator. |
| format | Journal Article |
| id | CGSpace44350 |
| institution | CGIAR Consortium |
| language | Español |
| publishDate | 2000 |
| publishDateRange | 2000 |
| publishDateSort | 2000 |
| record_format | dspace |
| spelling | CGSpace443502025-11-12T05:55:13Z La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos Turbidimetry a promising method to characterize the structural stability of soils Castillo Franco, J.A. Amézquita Collazos, Edgar Muller-Samann, KM aggregate stability turbidimetry sustainability indicators clay dispersion soil management estabilidad de agregados turbidimetría indicadores de sostenibilidad dispersión de arcillas manejo del suelo In two hillside areas in the north of the Cauca department, with mean annual rainfalls between 1600 and 2400mm and soils classified as Inceptisols, erosion plots were established and several different soil management systems were evaluated during seven years. The turbidimetry technique was used with soil samples from the treatments to characterize structural stability of the aggregates. The method is based upon the fact that water as an extrinsic factor of the soil is an important agent in the destruction of the aggregates, causing the formation of smaller aggregate units and the dispersion of the finest materials (clays). Aggregates with diameters between 1-2 and 2-4mm from the different treatments were evaluated. Concentration readings were made for the first two minutes and 2 hours after the experiment. Results show that differences exist regarding the stability of aggregates between the crop rotations evaluated and that the technique is sensitive to the determination of structural stability of soils under different cultivation systems, including the input of organic materials. It was also observed that there is a clear tendency to a higher concentration of soil particles in the suspension when the aggregates are finer, this response being approximate to the results obtained when said aggregates were exposed to a rainfall simulator. En dos zonas de ladera al norte del Departamento del Cauca, con precipitación promedia anual entre 1600 y 2400 mm y en suelos clasificados como Inceptisoles, se han establecido parcelas de escorrentía con diferentes manejos durante siete años. En muestras de suelos procedentes de estos manejos se utilizó la técnica de turbidimetría para caracterizar la estabilidad estructural de sus agregados. El método se basa en que el agua como factor extrínsico al suelo, es un agente importante en la destrucción de los agregados originando unidades de agregados de menor tamaño y causando dispersión de los materiales más finos (arcillas). Se evaluaron agregados de 1-2 y 2-4 mm de diámetro para los diferentes tratamientos. Se hicieron lecturas de concentración para los 2 minutos iniciales y a las 2 horas después de la prueba. Los resultados muestran que existen diferencias en la estabilidad de los agregados entre las rotaciones de cultivo evaluadas y que la técnica essensible en la determinación de la estabilidad estructural de suelos que han tenido difrentes manejos e incluso aporte de materiales orgánicos. Se observó además una clara tendencia a la mayor concentración de partículas de suelo en la suspensión cuando los agregados son más finos, aproximándose esta respuesta a la obtenida cuando dichos agregados son sometidos al simulador de lluvias. 2000 2014-10-02T08:33:38Z 2014-10-02T08:33:38Z Journal Article https://hdl.handle.net/10568/44350 es Open Access application/pdf |
| spellingShingle | aggregate stability turbidimetry sustainability indicators clay dispersion soil management estabilidad de agregados turbidimetría indicadores de sostenibilidad dispersión de arcillas manejo del suelo Castillo Franco, J.A. Amézquita Collazos, Edgar Muller-Samann, KM La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos |
| title | La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos |
| title_full | La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos |
| title_fullStr | La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos |
| title_full_unstemmed | La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos |
| title_short | La turbidimetría una metodología promisoria para caracterizar la estabilidad estructural de los suelos |
| title_sort | la turbidimetria una metodologia promisoria para caracterizar la estabilidad estructural de los suelos |
| topic | aggregate stability turbidimetry sustainability indicators clay dispersion soil management estabilidad de agregados turbidimetría indicadores de sostenibilidad dispersión de arcillas manejo del suelo |
| url | https://hdl.handle.net/10568/44350 |
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