Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya
Many food production systems in sub-Saharan Africa are constrained by phosphorus (P). We hypothesized that within legume-cereal rotation systems: targeting P to the legume phase leads to higher system productivity, and that use of grain legumes leads to better economic returns than use of herbaceous...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Cambridge University Press
2010
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44135 |
| _version_ | 1855540475799273472 |
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| author | Kihara, Job Maguta Vanlauwe, Bernard Waswa, Boaz Shaban Kimetu, J.M. Chianu, Jonas N. Bationo, B. André |
| author_browse | Bationo, B. André Chianu, Jonas N. Kihara, Job Maguta Kimetu, J.M. Vanlauwe, Bernard Waswa, Boaz Shaban |
| author_facet | Kihara, Job Maguta Vanlauwe, Bernard Waswa, Boaz Shaban Kimetu, J.M. Chianu, Jonas N. Bationo, B. André |
| author_sort | Kihara, Job Maguta |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Many food production systems in sub-Saharan Africa are constrained by phosphorus (P). We hypothesized that within legume-cereal rotation systems: targeting P to the legume phase leads to higher system productivity, and that use of grain legumes leads to better economic returns than use of herbaceous legumes. Four P application regimes: (i) no P, (ii) P applied every season, (iii) P applied in season 1 only and (iv) P applied in season 2 only were tested for four seasons in three cropping systems (continuous maize, mucuna-maize rotation and soybean-maize rotation) in a split plot experiment set up in Nyabeda, western Kenya. Treatments where P was applied were better than no P treatments. While continuous cereal systems showed the need for application of P every second season, rotation systems involving mucuna and soyabean indicated that application in one out of three seasons could be sufficient. Nitrogen fertilizer equivalence was 52 to >90 kg N ha?1for soyabean and 37 to >90 kg N ha?1 for mucuna, depending on P fertilization and season. Analysis of marginal rates of return (MRR) showed that soybean-maize rotation with one application of P was the most economically viable option, with an MRR of at least 147% compared to other non-dominated options. |
| format | Journal Article |
| id | CGSpace44135 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace441352024-11-15T08:53:06Z Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya Kihara, Job Maguta Vanlauwe, Bernard Waswa, Boaz Shaban Kimetu, J.M. Chianu, Jonas N. Bationo, B. André soybeans zea mays mucuna intercropping fertilization phosphorus yields soil fertility soja cultivo intercalado aplicación de abonos fósforo rendimiento fertilidad del suelo Many food production systems in sub-Saharan Africa are constrained by phosphorus (P). We hypothesized that within legume-cereal rotation systems: targeting P to the legume phase leads to higher system productivity, and that use of grain legumes leads to better economic returns than use of herbaceous legumes. Four P application regimes: (i) no P, (ii) P applied every season, (iii) P applied in season 1 only and (iv) P applied in season 2 only were tested for four seasons in three cropping systems (continuous maize, mucuna-maize rotation and soybean-maize rotation) in a split plot experiment set up in Nyabeda, western Kenya. Treatments where P was applied were better than no P treatments. While continuous cereal systems showed the need for application of P every second season, rotation systems involving mucuna and soyabean indicated that application in one out of three seasons could be sufficient. Nitrogen fertilizer equivalence was 52 to >90 kg N ha?1for soyabean and 37 to >90 kg N ha?1 for mucuna, depending on P fertilization and season. Analysis of marginal rates of return (MRR) showed that soybean-maize rotation with one application of P was the most economically viable option, with an MRR of at least 147% compared to other non-dominated options. 2010-01 2014-10-02T08:33:19Z 2014-10-02T08:33:19Z Journal Article https://hdl.handle.net/10568/44135 en Limited Access Cambridge University Press |
| spellingShingle | soybeans zea mays mucuna intercropping fertilization phosphorus yields soil fertility soja cultivo intercalado aplicación de abonos fósforo rendimiento fertilidad del suelo Kihara, Job Maguta Vanlauwe, Bernard Waswa, Boaz Shaban Kimetu, J.M. Chianu, Jonas N. Bationo, B. André Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya |
| title | Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya |
| title_full | Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya |
| title_fullStr | Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya |
| title_full_unstemmed | Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya |
| title_short | Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya |
| title_sort | strategic phosphorus application in legume cereal rotations increases land productivity and profitability in western kenya |
| topic | soybeans zea mays mucuna intercropping fertilization phosphorus yields soil fertility soja cultivo intercalado aplicación de abonos fósforo rendimiento fertilidad del suelo |
| url | https://hdl.handle.net/10568/44135 |
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