Fertilizer and residue quality effects on organic matter stabilization in soil aggregates
This study examined the influence of organic residue quality and N fertilizer on aggregate-associated SOM in maize cropping systems of southern Ghana. Six residue treatments of differing quality (Crotalaria juncea, Leucaena leucocephala, maize stover, sawdust, cattle manure and a control with no...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2009
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| Acceso en línea: | https://hdl.handle.net/10568/43457 |
| _version_ | 1855535312984342528 |
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| author | Fonte, Steven J. Yeboah, E. Ofori, P Quansah, GW Vanlauwe, Bernard Six, Johan |
| author_browse | Fonte, Steven J. Ofori, P Quansah, GW Six, Johan Vanlauwe, Bernard Yeboah, E. |
| author_facet | Fonte, Steven J. Yeboah, E. Ofori, P Quansah, GW Vanlauwe, Bernard Six, Johan |
| author_sort | Fonte, Steven J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | This study examined the influence of organic residue quality and N fertilizer on aggregate-associated SOM in maize cropping systems of southern Ghana. Six residue treatments of differing quality (Crotalaria juncea, Leucaena leucocephala, maize stover, sawdust, cattle manure and a control with no residues added) were applied at 4 Mg C ha-1 yr-1 both with and without fertilizer N additions (120 kg N ha-1 season-1). Soils (0-15cm) were sampled three years after study implementation and wet sieved into four aggregate size classes (8000–2000, 2000– 250, 250–53, and <53 ?m). Small macroaggregates (2000–250 ?m) were further separated into coarse particulate organic matter (>250 ?m), microaggregates within macroaggregates (53-250 ?m), and macroaggregate occluded silt and clay (<53 ?m). N fertilizer additions reduced aggregate stability as was evident from a 40% increase in the weight of the silt and clay fraction (P= 0.014) as well as a decrease in microaggregates across all residue types (P = 0.019). Fertilizer similarly affected C and N storage within these aggregate fractions, while effects of residue quality were largely insignificant. Our results suggest that fertilizer effects on soil aggregation may have important implications for long-term SOM dynamics. |
| format | Journal Article |
| id | CGSpace43457 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| record_format | dspace |
| spelling | CGSpace434572025-11-12T05:58:08Z Fertilizer and residue quality effects on organic matter stabilization in soil aggregates Fonte, Steven J. Yeboah, E. Ofori, P Quansah, GW Vanlauwe, Bernard Six, Johan maize soil organic matter crotalaria juncea leucaena leucocephala nitrogen fertilizers soil fertility cropping systems maíz materia orgánica del suelo abonos nitrogenados fertilidad del suelo sistemas de cultivo This study examined the influence of organic residue quality and N fertilizer on aggregate-associated SOM in maize cropping systems of southern Ghana. Six residue treatments of differing quality (Crotalaria juncea, Leucaena leucocephala, maize stover, sawdust, cattle manure and a control with no residues added) were applied at 4 Mg C ha-1 yr-1 both with and without fertilizer N additions (120 kg N ha-1 season-1). Soils (0-15cm) were sampled three years after study implementation and wet sieved into four aggregate size classes (8000–2000, 2000– 250, 250–53, and <53 ?m). Small macroaggregates (2000–250 ?m) were further separated into coarse particulate organic matter (>250 ?m), microaggregates within macroaggregates (53-250 ?m), and macroaggregate occluded silt and clay (<53 ?m). N fertilizer additions reduced aggregate stability as was evident from a 40% increase in the weight of the silt and clay fraction (P= 0.014) as well as a decrease in microaggregates across all residue types (P = 0.019). Fertilizer similarly affected C and N storage within these aggregate fractions, while effects of residue quality were largely insignificant. Our results suggest that fertilizer effects on soil aggregation may have important implications for long-term SOM dynamics. 2009 2014-09-24T08:42:09Z 2014-09-24T08:42:09Z Journal Article https://hdl.handle.net/10568/43457 en Open Access application/pdf |
| spellingShingle | maize soil organic matter crotalaria juncea leucaena leucocephala nitrogen fertilizers soil fertility cropping systems maíz materia orgánica del suelo abonos nitrogenados fertilidad del suelo sistemas de cultivo Fonte, Steven J. Yeboah, E. Ofori, P Quansah, GW Vanlauwe, Bernard Six, Johan Fertilizer and residue quality effects on organic matter stabilization in soil aggregates |
| title | Fertilizer and residue quality effects on organic matter stabilization in soil aggregates |
| title_full | Fertilizer and residue quality effects on organic matter stabilization in soil aggregates |
| title_fullStr | Fertilizer and residue quality effects on organic matter stabilization in soil aggregates |
| title_full_unstemmed | Fertilizer and residue quality effects on organic matter stabilization in soil aggregates |
| title_short | Fertilizer and residue quality effects on organic matter stabilization in soil aggregates |
| title_sort | fertilizer and residue quality effects on organic matter stabilization in soil aggregates |
| topic | maize soil organic matter crotalaria juncea leucaena leucocephala nitrogen fertilizers soil fertility cropping systems maíz materia orgánica del suelo abonos nitrogenados fertilidad del suelo sistemas de cultivo |
| url | https://hdl.handle.net/10568/43457 |
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