Nitrogen fixation and balance in burned versus mulched Mucuna pruriens var. utilis and Pueraria phaseoloides relay maize cropping systems
| dc.creator | Hauser, S. | |
| dc.date | 2006 | |
| dc.date | 2018-03-23T06:48:40Z | |
| dc.date | 2018-03-23T06:48:40Z | |
| dc.date.accessioned | 2026-06-27T15:54:47Z | |
| dc.description | 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.identifier | https://hdl.handle.net/10568/91740 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/117218 | |
| dc.language | en | |
| dc.rights | Limited Access | |
| dc.source | 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.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 |