Trade-offs between the short and long term effects of residue quality on soil C and N dynamics
The decline of soil organic matter (SOM) and its associated fertility is one of the most important constraints to enhanced crop productivity in sub-Saharan Africa. Integrated soil fertility management recognizes the potential benefits of the combined use of organic residue and mineral fertilizer inp...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2011
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44195 |
| _version_ | 1855521445789040640 |
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| author | Gentile, R Vanlauwe, Bernard Chivenge, Pauline P. Six, Johan |
| author_browse | Chivenge, Pauline P. Gentile, R Six, Johan Vanlauwe, Bernard |
| author_facet | Gentile, R Vanlauwe, Bernard Chivenge, Pauline P. Six, Johan |
| author_sort | Gentile, R |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The decline of soil organic matter (SOM) and its associated fertility is one of the most important constraints to enhanced crop productivity in sub-Saharan Africa. Integrated soil fertility management recognizes the potential benefits of the combined use of organic residue and mineral fertilizer inputs for improved crop yield and SOM build up. However, these benefits may be controlled by residue quality. We examined the short- to long-term C and N dynamics following application of different quality residues with and without N fertilizer in a series of experiments comprising different timescales of measurement in a Kenyan Humic Nitisol. The combined results of these studies indicate that residue quality and fertilizer additions alter short-term C and N mineralization. Combining low quality residue and fertilizer inputs immobilized a greater amount of fertilizer-N than high quality residue. Under field conditions, this reduction in available N induced by the combination of low quality residue and fertilizer reduced environmental N losses and created a positive interactive effect on crop N uptake. While input management manipulated short-term nutrient dynamics, it did not influence long-term SOM stabilization. The input of residue, regardless of quality, contributed to long-term soil fertility improvement. In conclusion, organic residue quality can be manipulated to optimize short-term nutrient dynamics while still conferring the same benefits to long-term SOM contents. |
| format | Journal Article |
| id | CGSpace44195 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace441952024-08-27T10:35:31Z Trade-offs between the short and long term effects of residue quality on soil C and N dynamics Gentile, R Vanlauwe, Bernard Chivenge, Pauline P. Six, Johan maize npk fertilizers soil fertility maíz abonos npk fertilidad del suelo The decline of soil organic matter (SOM) and its associated fertility is one of the most important constraints to enhanced crop productivity in sub-Saharan Africa. Integrated soil fertility management recognizes the potential benefits of the combined use of organic residue and mineral fertilizer inputs for improved crop yield and SOM build up. However, these benefits may be controlled by residue quality. We examined the short- to long-term C and N dynamics following application of different quality residues with and without N fertilizer in a series of experiments comprising different timescales of measurement in a Kenyan Humic Nitisol. The combined results of these studies indicate that residue quality and fertilizer additions alter short-term C and N mineralization. Combining low quality residue and fertilizer inputs immobilized a greater amount of fertilizer-N than high quality residue. Under field conditions, this reduction in available N induced by the combination of low quality residue and fertilizer reduced environmental N losses and created a positive interactive effect on crop N uptake. While input management manipulated short-term nutrient dynamics, it did not influence long-term SOM stabilization. The input of residue, regardless of quality, contributed to long-term soil fertility improvement. In conclusion, organic residue quality can be manipulated to optimize short-term nutrient dynamics while still conferring the same benefits to long-term SOM contents. 2011-01 2014-10-02T08:33:24Z 2014-10-02T08:33:24Z Journal Article https://hdl.handle.net/10568/44195 en Open Access Springer |
| spellingShingle | maize npk fertilizers soil fertility maíz abonos npk fertilidad del suelo Gentile, R Vanlauwe, Bernard Chivenge, Pauline P. Six, Johan Trade-offs between the short and long term effects of residue quality on soil C and N dynamics |
| title | Trade-offs between the short and long term effects of residue quality on soil C and N dynamics |
| title_full | Trade-offs between the short and long term effects of residue quality on soil C and N dynamics |
| title_fullStr | Trade-offs between the short and long term effects of residue quality on soil C and N dynamics |
| title_full_unstemmed | Trade-offs between the short and long term effects of residue quality on soil C and N dynamics |
| title_short | Trade-offs between the short and long term effects of residue quality on soil C and N dynamics |
| title_sort | trade offs between the short and long term effects of residue quality on soil c and n dynamics |
| topic | maize npk fertilizers soil fertility maíz abonos npk fertilidad del suelo |
| url | https://hdl.handle.net/10568/44195 |
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