The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa
The IITA in its research for sustainable soil fertility management has passed through several stages during which legume-based systems were always at the forefront. Alley cropping has N yields of more than 200 kg ha-1 with 50% N2 fixation. In the case of Mucuna cover cropping, the ecological benefit...
| Autores principales: | , , , , , , , |
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/103354 |
| _version_ | 1855534751600869376 |
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| author | Carsky, R.J. Sanginga, N. Schulz, S. Douthwaite, Boru Manyong, Victor M. Diels, J. Vanlauwe, Bernard Keatinge, J.D.H. |
| author_browse | Carsky, R.J. Diels, J. Douthwaite, Boru Keatinge, J.D.H. Manyong, Victor M. Sanginga, N. Schulz, S. Vanlauwe, Bernard |
| author_facet | Carsky, R.J. Sanginga, N. Schulz, S. Douthwaite, Boru Manyong, Victor M. Diels, J. Vanlauwe, Bernard Keatinge, J.D.H. |
| author_sort | Carsky, R.J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The IITA in its research for sustainable soil fertility management has passed through several stages during which legume-based systems were always at the forefront. Alley cropping has N yields of more than 200 kg ha-1 with 50% N2 fixation. In the case of Mucuna cover cropping, the ecological benefit was unequivocal, with more than 100 kg ha' of N2 fixed and consistently positive effects on crop yields. But adoption by farmers has been too low to bring the benefit of BNF to farm households. Based on these experiences, we have proposed increased emphasis on systems based on cowpea and soybean rotation because of their high adoptability although the benefits to the soil are small compared with Mucuna fallows and alley farming. Besides high protein grain production, cowpea and soybean rotation reduced densities of Striga hermonthica by 50% in farmer-managed trials and increased net benefits to farmers. Cover cropping and agroforestry systems can also be used for soil fertility management, but only if their adoptability increases by providing products needed by farmers. |
| format | Book Chapter |
| id | CGSpace103354 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2004 |
| publishDateRange | 2004 |
| publishDateSort | 2004 |
| record_format | dspace |
| spelling | CGSpace1033542023-12-08T19:25:22Z The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa Carsky, R.J. Sanginga, N. Schulz, S. Douthwaite, Boru Manyong, Victor M. Diels, J. Vanlauwe, Bernard Keatinge, J.D.H. soil fertility mucuna striga hermonthica agroforestry cowpeas soybeans farmers biological nitrogen fixation The IITA in its research for sustainable soil fertility management has passed through several stages during which legume-based systems were always at the forefront. Alley cropping has N yields of more than 200 kg ha-1 with 50% N2 fixation. In the case of Mucuna cover cropping, the ecological benefit was unequivocal, with more than 100 kg ha' of N2 fixed and consistently positive effects on crop yields. But adoption by farmers has been too low to bring the benefit of BNF to farm households. Based on these experiences, we have proposed increased emphasis on systems based on cowpea and soybean rotation because of their high adoptability although the benefits to the soil are small compared with Mucuna fallows and alley farming. Besides high protein grain production, cowpea and soybean rotation reduced densities of Striga hermonthica by 50% in farmer-managed trials and increased net benefits to farmers. Cover cropping and agroforestry systems can also be used for soil fertility management, but only if their adoptability increases by providing products needed by farmers. 2004 2019-08-21T14:13:01Z 2019-08-21T14:13:01Z Book Chapter https://hdl.handle.net/10568/103354 en Limited Access Carsky, R.J., Sanginga, N., Schulz, S., Douthwaite, B., Manyong, V.M., Diels, J., ... & Keatinge, J. D. (2004). The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa. In: R. Serraj, Symbiotic nitrogen fixation prospects for enhanced application intropical agriculture. New Delhi, India: Oxford and IBH Publishing Co. Pvt. Ltd., (p.145-161). |
| spellingShingle | soil fertility mucuna striga hermonthica agroforestry cowpeas soybeans farmers biological nitrogen fixation Carsky, R.J. Sanginga, N. Schulz, S. Douthwaite, Boru Manyong, Victor M. Diels, J. Vanlauwe, Bernard Keatinge, J.D.H. The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa |
| title | The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa |
| title_full | The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa |
| title_fullStr | The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa |
| title_full_unstemmed | The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa |
| title_short | The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa |
| title_sort | ability to fix n is not the only key to delivery of the benefits of bnf to farmers experience of iita in the savannas of africa |
| topic | soil fertility mucuna striga hermonthica agroforestry cowpeas soybeans farmers biological nitrogen fixation |
| url | https://hdl.handle.net/10568/103354 |
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