Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone
The functioning of trees as a safety-net for capturing nutrients leached beyond the reach of crop roots was evaluated by investigating changes in exchangeable cations (Ca, Mg, and K) and pH in a wide range of medium to long term alley cropping trials in the derived savanna of West Africa, compared t...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2005
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/44087 |
| _version_ | 1855513647494725632 |
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| author | Vanlauwe, Bernard Aihou, K. Tossah, B.K. Diels, J. Sanginga, Nteranya Merckx, Roel |
| author_browse | Aihou, K. Diels, J. Merckx, Roel Sanginga, Nteranya Tossah, B.K. Vanlauwe, Bernard |
| author_facet | Vanlauwe, Bernard Aihou, K. Tossah, B.K. Diels, J. Sanginga, Nteranya Merckx, Roel |
| author_sort | Vanlauwe, Bernard |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The functioning of trees as a safety-net for capturing nutrients leached beyond the reach of crop roots was evaluated by investigating changes in exchangeable cations (Ca, Mg, and K) and pH in a wide range of medium to long term alley cropping trials in the derived savanna of West Africa, compared to no-tree control plots. Topsoil Ca content, effective cation exchange capacity, and pH were substantially higher under <em>Senna</em> <em>siamea</em> than under <em>Leucaena leucocephala</em>, <em>Gliricidia sepium</em>, or the no-tree control plots in sites with a Bt horizon rich in exchangeable Ca. This was shown to be largely related to the recovery of Ca from the subsoil under <em>Senna</em> trees. The increase of the Ca content of the topsoil under <em>Senna</em> relative to the no-tree control treatment was related to the total amount of dry matter applied since trial establishment. The lack of increase in Ca accumulation under the other species was related to potential recovery of Ca from the topsoil itself and/or substantial Ca leaching. The accumulation of Ca in the topsoil under <em>Senna</em> had a marked effect on the topsoil pH, the latter increasing significantly compared with the <em>Leucaena</em>, <em>Gliridia</em>, and no-tree control treatments. In conclusion, the current work shows that the functioning of the often hypothesized 'safety-net' of trees in a cropping system depends on (i) the tree species and on (ii) the presence of a subsoil of suitable quality, i.e., clay enriched and with high Ca saturation. |
| format | Journal Article |
| id | CGSpace44087 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2005 |
| publishDateRange | 2005 |
| publishDateSort | 2005 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace440872024-03-24T15:23:57Z Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone Vanlauwe, Bernard Aihou, K. Tossah, B.K. Diels, J. Sanginga, Nteranya Merckx, Roel gliricidia sepium leucaena leucocephala senna siamea hedges plant litter savannas top soil calcium agroforestry soil ph leucaena lecocephala cerca viva hojarasca sabanas capa arable del suelo calcio agroforesteria ph del suelo subsoil litterfall prunings subsoil ca content topsoil trees biomass The functioning of trees as a safety-net for capturing nutrients leached beyond the reach of crop roots was evaluated by investigating changes in exchangeable cations (Ca, Mg, and K) and pH in a wide range of medium to long term alley cropping trials in the derived savanna of West Africa, compared to no-tree control plots. Topsoil Ca content, effective cation exchange capacity, and pH were substantially higher under <em>Senna</em> <em>siamea</em> than under <em>Leucaena leucocephala</em>, <em>Gliricidia sepium</em>, or the no-tree control plots in sites with a Bt horizon rich in exchangeable Ca. This was shown to be largely related to the recovery of Ca from the subsoil under <em>Senna</em> trees. The increase of the Ca content of the topsoil under <em>Senna</em> relative to the no-tree control treatment was related to the total amount of dry matter applied since trial establishment. The lack of increase in Ca accumulation under the other species was related to potential recovery of Ca from the topsoil itself and/or substantial Ca leaching. The accumulation of Ca in the topsoil under <em>Senna</em> had a marked effect on the topsoil pH, the latter increasing significantly compared with the <em>Leucaena</em>, <em>Gliridia</em>, and no-tree control treatments. In conclusion, the current work shows that the functioning of the often hypothesized 'safety-net' of trees in a cropping system depends on (i) the tree species and on (ii) the presence of a subsoil of suitable quality, i.e., clay enriched and with high Ca saturation. 2005-02 2014-10-02T08:33:13Z 2014-10-02T08:33:13Z Journal Article https://hdl.handle.net/10568/44087 en Limited Access Springer Vanlauwe, B., Aihou, K., Tossah, B.K. et al. Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone. Plant Soil 269, 285–296 (2005). https://doi.org/10.1007/s11104-004-0599-3 |
| spellingShingle | gliricidia sepium leucaena leucocephala senna siamea hedges plant litter savannas top soil calcium agroforestry soil ph leucaena lecocephala cerca viva hojarasca sabanas capa arable del suelo calcio agroforesteria ph del suelo subsoil litterfall prunings subsoil ca content topsoil trees biomass Vanlauwe, Bernard Aihou, K. Tossah, B.K. Diels, J. Sanginga, Nteranya Merckx, Roel Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone |
| title | Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone |
| title_full | Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone |
| title_fullStr | Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone |
| title_full_unstemmed | Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone |
| title_short | Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone |
| title_sort | senna siamea trees recycle ca from a ca rich subsoil and increase the topsoil ph in agroforestry systems in the west african derived savanna zone |
| topic | gliricidia sepium leucaena leucocephala senna siamea hedges plant litter savannas top soil calcium agroforestry soil ph leucaena lecocephala cerca viva hojarasca sabanas capa arable del suelo calcio agroforesteria ph del suelo subsoil litterfall prunings subsoil ca content topsoil trees biomass |
| url | https://hdl.handle.net/10568/44087 |
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