Impact of residue characteristics on phosphorus availability in West African moist savanna soils
The role of residue characteristics in enhancing the availability of P was investigated in a greenhouse study using two soils from the northern Guinea savanna (NGS) and four from the derived savanna (DS) zones of the West African moist savanna. Eight organic residues of varying C-to-P ratio were use...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2004
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/43557 |
| _version_ | 1855538997501100032 |
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| author | Nwoke, O.C. Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Osonubi, O. |
| author_browse | Diels, J. Nwoke, O.C. Osonubi, O. Sanginga, Nteranya Vanlauwe, Bernard |
| author_facet | Nwoke, O.C. Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Osonubi, O. |
| author_sort | Nwoke, O.C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The role of residue characteristics in enhancing the availability of P was investigated in a greenhouse study using two soils from the northern Guinea savanna (NGS) and four from the derived savanna (DS) zones of the West African moist savanna. Eight organic residues of varying C-to-P ratio were used and maize ( Zea mays) was grown for 7 weeks. The effect of the organic residues on P availability (measured as resin P and maize P accumulation) differed among the soils. On average, the increase in resin P, calculated as {[(soil+residue)?control]/(control)×100}, was between 8% (Davié, DS) and 355% (Danayamaka, NGS). Maize P accumulation was increased by ca. 11% in Davié and Niaouli (DS) soils and 600% in Danayamaka soil. The increase in maize total dry matter yield (DMY) ranged from 2% to 649%. Residues with C-to-P ratio >200 produced lower DMY than those with lower ratios. Residue organic P (Po) extractable with 0.2 N H2SO4 (acid-Po) accounted for 92% ( P =0.0001) of the variation in DMY in a step-wise regression with residue parameters as independent variables and mean DMY as the dependent variable. The residue Po extractable with 0.5 M NaHCO3 (HCO3-Po) correlated significantly with DMY in Danayamaka and Davié soils, and with P accumulation in Danayamaka soil. The relationships between the residue Po and DMY might imply that Po fractions in decomposing residues contribute to P availability. However, the suitability of using the Po content of organic residues to predict their agronomic value with respect to P nutrition needs further evaluation. |
| format | Journal Article |
| id | CGSpace43557 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2004 |
| publishDateRange | 2004 |
| publishDateSort | 2004 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace435572024-08-27T10:37:05Z Impact of residue characteristics on phosphorus availability in West African moist savanna soils Nwoke, O.C. Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Osonubi, O. soil fertility savannas crop residues quality phosphorus fertilidad del suelo sabanas residuos de cosechas calidad fósforo The role of residue characteristics in enhancing the availability of P was investigated in a greenhouse study using two soils from the northern Guinea savanna (NGS) and four from the derived savanna (DS) zones of the West African moist savanna. Eight organic residues of varying C-to-P ratio were used and maize ( Zea mays) was grown for 7 weeks. The effect of the organic residues on P availability (measured as resin P and maize P accumulation) differed among the soils. On average, the increase in resin P, calculated as {[(soil+residue)?control]/(control)×100}, was between 8% (Davié, DS) and 355% (Danayamaka, NGS). Maize P accumulation was increased by ca. 11% in Davié and Niaouli (DS) soils and 600% in Danayamaka soil. The increase in maize total dry matter yield (DMY) ranged from 2% to 649%. Residues with C-to-P ratio >200 produced lower DMY than those with lower ratios. Residue organic P (Po) extractable with 0.2 N H2SO4 (acid-Po) accounted for 92% ( P =0.0001) of the variation in DMY in a step-wise regression with residue parameters as independent variables and mean DMY as the dependent variable. The residue Po extractable with 0.5 M NaHCO3 (HCO3-Po) correlated significantly with DMY in Danayamaka and Davié soils, and with P accumulation in Danayamaka soil. The relationships between the residue Po and DMY might imply that Po fractions in decomposing residues contribute to P availability. However, the suitability of using the Po content of organic residues to predict their agronomic value with respect to P nutrition needs further evaluation. 2004-05-01 2014-09-24T08:42:19Z 2014-09-24T08:42:19Z Journal Article https://hdl.handle.net/10568/43557 en Limited Access Springer |
| spellingShingle | soil fertility savannas crop residues quality phosphorus fertilidad del suelo sabanas residuos de cosechas calidad fósforo Nwoke, O.C. Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Osonubi, O. Impact of residue characteristics on phosphorus availability in West African moist savanna soils |
| title | Impact of residue characteristics on phosphorus availability in West African moist savanna soils |
| title_full | Impact of residue characteristics on phosphorus availability in West African moist savanna soils |
| title_fullStr | Impact of residue characteristics on phosphorus availability in West African moist savanna soils |
| title_full_unstemmed | Impact of residue characteristics on phosphorus availability in West African moist savanna soils |
| title_short | Impact of residue characteristics on phosphorus availability in West African moist savanna soils |
| title_sort | impact of residue characteristics on phosphorus availability in west african moist savanna soils |
| topic | soil fertility savannas crop residues quality phosphorus fertilidad del suelo sabanas residuos de cosechas calidad fósforo |
| url | https://hdl.handle.net/10568/43557 |
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