Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity
Restrictive soil layers commonly known as hardpans restrict water and airflow in the soil profile and impede plant root growth below the plough depth. Preventing hardpans to form or ameliorate existing hardpans will allow plants root more deeply, increase water infiltration and reduce runoff, all re...
| Autores principales: | , , , |
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
International Livestock Research Institute
2013
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/34238 |
| _version_ | 1855527344566960128 |
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| author | Tebebu, Tigist Y. Baver, C. Stoof, C. Steenhuis, Tammo S. |
| author_browse | Baver, C. Steenhuis, Tammo S. Stoof, C. Tebebu, Tigist Y. |
| author_facet | Tebebu, Tigist Y. Baver, C. Stoof, C. Steenhuis, Tammo S. |
| author_sort | Tebebu, Tigist Y. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Restrictive soil layers commonly known as hardpans restrict water and airflow in the soil profile and impede plant root growth below the plough depth. Preventing hardpans to form or ameliorate existing hardpans will allow plants root more deeply, increase water infiltration and reduce runoff, all resulting in greater amounts of water available for the crop (i.e. green water). However, there has been a lack of research on understanding the influence of transported disturbed soil particles (colloids) from the surface to the subsurface to form restrictive soil layers, which is a common occurrence in degraded soils. In this study, we investigated the effect of disturbed soil particles on clogging up of soil pores to form hardpans. Unsaturated sand column experiments were performed by applying 0.04 g/ml soil water solution in two sand textures. For each experiment, soil water solution infiltration process was visualized using a bright field microscope and soil particles remained in the sand column was quantified collecting and measuring leachate at the end of the experiment in the soil and water lab of Cornell University. Preliminary results show that accumulation of significant amount of soil particles occur in between sand particles and at air water interfaces, indicating the clogging of soil pores occurs as a result of disturbed fine soil particles transported from the soil surface to the subsurface. |
| format | Book Chapter |
| id | CGSpace34238 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | International Livestock Research Institute |
| publisherStr | International Livestock Research Institute |
| record_format | dspace |
| spelling | CGSpace342382023-09-25T07:46:41Z Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity Tebebu, Tigist Y. Baver, C. Stoof, C. Steenhuis, Tammo S. soil water Restrictive soil layers commonly known as hardpans restrict water and airflow in the soil profile and impede plant root growth below the plough depth. Preventing hardpans to form or ameliorate existing hardpans will allow plants root more deeply, increase water infiltration and reduce runoff, all resulting in greater amounts of water available for the crop (i.e. green water). However, there has been a lack of research on understanding the influence of transported disturbed soil particles (colloids) from the surface to the subsurface to form restrictive soil layers, which is a common occurrence in degraded soils. In this study, we investigated the effect of disturbed soil particles on clogging up of soil pores to form hardpans. Unsaturated sand column experiments were performed by applying 0.04 g/ml soil water solution in two sand textures. For each experiment, soil water solution infiltration process was visualized using a bright field microscope and soil particles remained in the sand column was quantified collecting and measuring leachate at the end of the experiment in the soil and water lab of Cornell University. Preliminary results show that accumulation of significant amount of soil particles occur in between sand particles and at air water interfaces, indicating the clogging of soil pores occurs as a result of disturbed fine soil particles transported from the soil surface to the subsurface. 2013-11-01 2013-12-14T14:44:30Z 2013-12-14T14:44:30Z Book Chapter https://hdl.handle.net/10568/34238 en https://hdl.handle.net/10568/33929 Open Access application/pdf International Livestock Research Institute Tebebu, T., Baver, C., Stoof, C. and Steenhuis, T. 2013. Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity. IN: Wolde, M. (ed). 2013, Rainwater management for resilient livelihoods in Ethiopia: Proceedings of the Nile Basin Development Challenge Science Meeting, Addis Ababa, 9–10 July 2013. NBDC Technical Report 5. Nairobi, Kenya: ILRI. |
| spellingShingle | soil water Tebebu, Tigist Y. Baver, C. Stoof, C. Steenhuis, Tammo S. Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity |
| title | Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity |
| title_full | Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity |
| title_fullStr | Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity |
| title_full_unstemmed | Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity |
| title_short | Visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity |
| title_sort | visualizing clogging up of soil pores in tropical degraded soils and their impact on green water productivity |
| topic | soil water |
| url | https://hdl.handle.net/10568/34238 |
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