Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD
Integrated soil fertility management (ISFM) technologies for African smallholders should consider (i) within-farm soil heterogeneity; (ii) long-term dynamics and variability; (iii) manure quality and availability; (iv) access to fertilizers; and (v) competing uses for crop residues. We used the mode...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2008
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| Acceso en línea: | https://hdl.handle.net/10568/43274 |
| _version_ | 1855522170827964416 |
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| author | Tittonell, Pablo A. Corbeels, Marc Wijk, Mark T. van Vanlauwe, Bernard Giller, Kenneth E. |
| author_browse | Corbeels, Marc Giller, Kenneth E. Tittonell, Pablo A. Vanlauwe, Bernard Wijk, Mark T. van |
| author_facet | Tittonell, Pablo A. Corbeels, Marc Wijk, Mark T. van Vanlauwe, Bernard Giller, Kenneth E. |
| author_sort | Tittonell, Pablo A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Integrated soil fertility management (ISFM) technologies for African smallholders should consider (i) within-farm soil heterogeneity; (ii) long-term dynamics and variability; (iii) manure quality and availability; (iv) access to fertilizers; and (v) competing uses for crop residues. We used the model FIELD (Field-scale resource Interactions, use Efficiencies and Long term soil fertility Development) to explore allocation strategies of manure and fertilizers. Maize response to N fertilizer from 0 to 180 kg N ha?1 (±30 kg P ha?1) distinguished poorly responsive fertile (e.g., grain yields of 4.1–5.3 t ha?1 without P and of 7.5–7.5 t ha?1 with P) from responsive (1.0–4.3 t ha?1 and 2.2–6.6 t ha?1) and poorly responsive infertile fields (0.2–1.0 t ha?1 and 0.5–3.1 t ha?1). Soils receiving manure plus fertilizers for 12 yr retained 1.1 to 1.5 t C ha?1 yr?1 when 70% of the crop residue was left in the field, and 0.4 to 0.7 t C ha?1 yr?1 with 10% left. Degraded fields were not rehabilitated with manures of local quality (e.g., 23–35% C, 0.5–1.2% N, 0.1–0.3% P) applied at realistic rates (3.6 t dm ha?1 yr?1) for 12 yr without fertilizers. Mineral fertilizers are necessary to kick-start soil rehabilitation through hysteretic restoration of biomass productivity and C inputs to the soil. |
| format | Journal Article |
| id | CGSpace43274 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace432742024-08-27T10:35:37Z Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD Tittonell, Pablo A. Corbeels, Marc Wijk, Mark T. van Vanlauwe, Bernard Giller, Kenneth E. Integrated soil fertility management (ISFM) technologies for African smallholders should consider (i) within-farm soil heterogeneity; (ii) long-term dynamics and variability; (iii) manure quality and availability; (iv) access to fertilizers; and (v) competing uses for crop residues. We used the model FIELD (Field-scale resource Interactions, use Efficiencies and Long term soil fertility Development) to explore allocation strategies of manure and fertilizers. Maize response to N fertilizer from 0 to 180 kg N ha?1 (±30 kg P ha?1) distinguished poorly responsive fertile (e.g., grain yields of 4.1–5.3 t ha?1 without P and of 7.5–7.5 t ha?1 with P) from responsive (1.0–4.3 t ha?1 and 2.2–6.6 t ha?1) and poorly responsive infertile fields (0.2–1.0 t ha?1 and 0.5–3.1 t ha?1). Soils receiving manure plus fertilizers for 12 yr retained 1.1 to 1.5 t C ha?1 yr?1 when 70% of the crop residue was left in the field, and 0.4 to 0.7 t C ha?1 yr?1 with 10% left. Degraded fields were not rehabilitated with manures of local quality (e.g., 23–35% C, 0.5–1.2% N, 0.1–0.3% P) applied at realistic rates (3.6 t dm ha?1 yr?1) for 12 yr without fertilizers. Mineral fertilizers are necessary to kick-start soil rehabilitation through hysteretic restoration of biomass productivity and C inputs to the soil. 2008-09 2014-09-24T08:41:53Z 2014-09-24T08:41:53Z Journal Article https://hdl.handle.net/10568/43274 en Limited Access Wiley |
| spellingShingle | Tittonell, Pablo A. Corbeels, Marc Wijk, Mark T. van Vanlauwe, Bernard Giller, Kenneth E. Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD |
| title | Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD |
| title_full | Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD |
| title_fullStr | Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD |
| title_full_unstemmed | Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD |
| title_short | Combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of Kenya : Explorations using the crop-soil model FIELD |
| title_sort | combining organic and mineral fertilizers for integrated soil fertility management in smallholder farming systems of kenya explorations using the crop soil model field |
| url | https://hdl.handle.net/10568/43274 |
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