Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status
Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986–2002) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-trees)...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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2005
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| Online Access: | https://hdl.handle.net/10568/43641 |
| _version_ | 1855532597785919488 |
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| author | Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Merckx, Roel |
| author_browse | Diels, J. Merckx, Roel Sanginga, Nteranya Vanlauwe, Bernard |
| author_facet | Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Merckx, Roel |
| author_sort | Vanlauwe, Bernard |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986–2002) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-trees) system on the other hand, all cropped annually with a maize–cowpea rotation. All systems had a plus and minus fertilizer treatment. Over the years, the annual biomass return through tree prunings declined steadily, but more drastically for Leucaena than for Senna. In 2002, the nitrogen contribution from Leucaena residues stabilized at about 200 kg N/ha/year, while the corresponding value for Senna was about 160 kg N/ha/year. On average, the four Leucaena prunings were more equal in biomass as well as in amounts of N, P and cations, while the first Sennapruning was always contributing up to 60% of the annual biomass or nutrient return. Maize crop yields declined steadily in all treatments, but the least so in the Senna + fertilizer treatment where in 2002 still 2.2 tonnes/ha of maize were obtained. Nitrogen fertilizer use efficiency was usually higher in the Senna treatment compared to the control or the Leucaena treatment. Added benefits due to the combined use of fertilizer N and organic matter additions were observed only for the Sennatreatment and only in the last 6 years. At all other times, they remained absent or were even negative in the Leucaenatreatments for the first 3 years. Most chemical soil fertility parameters decreased in all the treatments, but less so in the alley cropping systems. The presence of trees had a positive effect on remaining carbon stocks, while they were reduced compared to the 1986 data. Trees had a positive effect on the maintenance of exchangeable cations in the top soil. Exchangeable Ca, Mg and K – and hence ECEC – were only slightly reduced after 16 years of cropping in the tree-based systems, and even increased in the Senna treatments. In the control treatments, values for all these parameters reduced to 50% or less of the original values after 16 years. All the above points to the Senna-based alley system with fertilizers as the more resilient one. This is reflected in all soil fertility parameters, in added benefits due to the combined use of fertilizer nitrogen and organic residue application and in a more stable maize yield over the years, averaging 2.8 tonnes/ha with maximal deviations from the average not exceeding 21%. |
| format | Journal Article |
| id | CGSpace43641 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2005 |
| publishDateRange | 2005 |
| publishDateSort | 2005 |
| record_format | dspace |
| spelling | CGSpace436412025-11-12T05:57:27Z Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Merckx, Roel soil fertility alley cropping leucaena leucocephala senna siamea zea mays maize vigna unguiculata cowpeas soil chemicophysical properties fertilizer application biomass dry matter content nitrogen fixation yields fertilidad del suelo cultivo entre líneas maíz caupí propiedades físico - químicas suelo aplicación de abonos biomasa contenido de materia seca fijación del nitrógeno rendimiento Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986–2002) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-trees) system on the other hand, all cropped annually with a maize–cowpea rotation. All systems had a plus and minus fertilizer treatment. Over the years, the annual biomass return through tree prunings declined steadily, but more drastically for Leucaena than for Senna. In 2002, the nitrogen contribution from Leucaena residues stabilized at about 200 kg N/ha/year, while the corresponding value for Senna was about 160 kg N/ha/year. On average, the four Leucaena prunings were more equal in biomass as well as in amounts of N, P and cations, while the first Sennapruning was always contributing up to 60% of the annual biomass or nutrient return. Maize crop yields declined steadily in all treatments, but the least so in the Senna + fertilizer treatment where in 2002 still 2.2 tonnes/ha of maize were obtained. Nitrogen fertilizer use efficiency was usually higher in the Senna treatment compared to the control or the Leucaena treatment. Added benefits due to the combined use of fertilizer N and organic matter additions were observed only for the Sennatreatment and only in the last 6 years. At all other times, they remained absent or were even negative in the Leucaenatreatments for the first 3 years. Most chemical soil fertility parameters decreased in all the treatments, but less so in the alley cropping systems. The presence of trees had a positive effect on remaining carbon stocks, while they were reduced compared to the 1986 data. Trees had a positive effect on the maintenance of exchangeable cations in the top soil. Exchangeable Ca, Mg and K – and hence ECEC – were only slightly reduced after 16 years of cropping in the tree-based systems, and even increased in the Senna treatments. In the control treatments, values for all these parameters reduced to 50% or less of the original values after 16 years. All the above points to the Senna-based alley system with fertilizers as the more resilient one. This is reflected in all soil fertility parameters, in added benefits due to the combined use of fertilizer nitrogen and organic residue application and in a more stable maize yield over the years, averaging 2.8 tonnes/ha with maximal deviations from the average not exceeding 21%. 2005 2014-09-24T08:42:26Z 2014-09-24T08:42:26Z Journal Article https://hdl.handle.net/10568/43641 en Open Access application/pdf |
| spellingShingle | soil fertility alley cropping leucaena leucocephala senna siamea zea mays maize vigna unguiculata cowpeas soil chemicophysical properties fertilizer application biomass dry matter content nitrogen fixation yields fertilidad del suelo cultivo entre líneas maíz caupí propiedades físico - químicas suelo aplicación de abonos biomasa contenido de materia seca fijación del nitrógeno rendimiento Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Merckx, Roel Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status |
| title | Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status |
| title_full | Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status |
| title_fullStr | Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status |
| title_full_unstemmed | Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status |
| title_short | Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status |
| title_sort | long term integrated soil fertility management in south western nigeria crop performance and impact on the soil fertility status |
| topic | soil fertility alley cropping leucaena leucocephala senna siamea zea mays maize vigna unguiculata cowpeas soil chemicophysical properties fertilizer application biomass dry matter content nitrogen fixation yields fertilidad del suelo cultivo entre líneas maíz caupí propiedades físico - químicas suelo aplicación de abonos biomasa contenido de materia seca fijación del nitrógeno rendimiento |
| url | https://hdl.handle.net/10568/43641 |
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