|
|
| Bol, Roland; Petersen, Søren O.; Christofides, Calliopi; Dittert, Klaus; Hansen, Martin Nørregaard. |
| Urine patches are significant hot-spots of C and N transformations. To investigate the effects of urine composition on C and N turnover and gaseous emissions from a Danish pasture soil, a field plot study was carried out in September 2001. Cattle urine was amended with two levels of 13C- and 15N-labeled urea, corresponding to 5.58 and 9.54 g urea-N l-1, to reflect two levels of protein intake. Urine was then added to a sandy-loam pasture soil equivalent to a rate of 23.3 or 39.8 g urea-N m-2. Pools and isotopic labeling of nitrous oxide (N2O) and CO2 emissions, extractable urea, ammonium (NH4+), and nitrate (NO3-), and plant uptake were monitored during a 14 d period, while ammonia (NH3) losses were estimated in separate plots amended with unlabeled urine.... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2004 |
URL: http://orgprints.org/4060/1/4060.pdf |
| |
