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| Ambus, P.; Petersen, S.O.; Soussana, J.-F.. |
| Deposition of urine and dung by grazing animals is a strong source for N2O production and evolution in grass pastures. Investigations have shown that at least 20% of the annual losses of N2O from a grazed pasture may be associated with urine patches. Moreover, it is well known that urine depositions causes plant damage (scorching) and root death. It can therefore be hypothesized that organic C is released, which may further stimulate the production of N2O. In this study we have used combined 13C-pulse labeling and 15N-labeled urine in order to determine the amount of plant derived C respired in response to the urine application and assess the N2O emission factor from urine patches. Over a six weeks course the cumulated amount of CO2 evolved equaled the... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops; Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/10143/1/AGEE2979-Jan2007.pdf |
