| dc.contributor.author | Hauser, S. |
| dc.date.accessioned | 2019-12-04T11:18:29Z |
| dc.date.available | 2019-12-04T11:18:29Z |
| dc.date.issued | 2006 |
| dc.identifier.citation | Hauser, S. (2006). Nitrogen fixation and balance in burned versus mulched Mucuna pruriens var. utilis and Pueraria phaseoloides relay maize cropping systems. Conference on International Agricultural Research for Development (p. 1-4). Tropentag 2006 Bonn, October 11-13, 2006. |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/3222 |
| dc.description.abstract | The contribution of the cover crops Mucuna pruriens var. utilis and Pueraria phaseoloides to the N balance of a sole maize relay cropping system was estimated. Over 4 consecutive years, amounts of N in 8-9 months old aboveground M. pruriens, P. phaseoloides and natural fallow biomass and litter were determined. Fallow biomass was either burned or retained as mulch. Maize aboveground N uptake and N export with grain was determined. The amount of N2-fixed was estimated with the N difference method. In 1998, 1999, and 2000, N content in M. pruriens and P. phaseoloides biomass was higher than in natural fallow. In 2000 and 2001 biomass in previously burned plots contained less N than when biomass had been retained. Fallow-type and biomass management did not interact. Maize N uptake was higher after biomass burning in 1998, yet thereafter higher when biomass was retained. Fallow type had only in 1999 an effect, with highest maize N uptake in the P. phaseoloides system, followed by the M. pruriens system and the natural regrowth. The estimated amounts of N2-fixed were higher in the P. phaseoloidessystem; biomass management had no effect. Nitrogen export with maize grain was highest in the P. phaseoloides system, followed by the M. pruriens system; biomass management had no effect. Maize N uptake into the aboveground biomass and N export with grains was balanced by the amount of N in fallow biomass in all systems when biomass was retained. The amount of N2-fixed did not balance the amount taken up by the maize. In the M. pruriens system the N exported with grains was not balanced by N2 fixation, the P. phaseoloides system had a positive balance of N export in grain versus the amount of N2 fixed. |
| dc.language.iso | en |
| dc.subject | Nitrogen Fixation |
| dc.subject | Maize Grain |
| dc.subject | Mucuna Pruriens Var. Utilis |
| dc.subject | Pueraria Phaseoloides |
| dc.subject | Biomass |
| dc.title | Nitrogen fixation and balance in burned versus mulched Mucuna pruriens var. utilis and Pueraria phaseoloides relay maize cropping systems |
| dc.type | Conference Paper |
| dc.description.version | Peer Review |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.coverage.region | Africa |
| cg.coverage.region | Central Africa |
| cg.coverage.country | Cameroon |
| cg.authorship.types | CGIAR single centre |
| cg.iitasubject | Maize |
| cg.iitasubject | Nutrition |
| cg.iitasubject | Plant Health |
| cg.iitasubject | Soil Health |
| cg.accessibilitystatus | Limited Access |
| local.dspaceid | 94896 |
