caa a22 4500 477110320 CHVBK 20180405111607.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00011172 doi (NATIONALLICENCE)springer-10.1007/BF00011172 Fate of urine nitrogen on mineral and peat soils in New Zealand [Elektronische Daten] [T. Clough, R. Sherlock, K. Cameron, S. Ledgard] A field lysimeter experiment was conducted over 150 days to examine the fate of synthetic urinary nitrogen (N) applied to peat and mineral soils, with and without a water table. At the start of the winter season, synthetic urine labelled with 15N, was applied at 500 kg N ha−1. Plant uptake, leaching losses and nitrous oxide (N2O) fluxes were monitored. Total plant uptake ranged from 11% to 35% of the urine-N applied depending on soil type and treatment. Plant uptake of applied N was greater in the presence of a water table in the mineral soil. Nitrate-N (NO3 --N) was only detected in leachates from the mineral soil, at concentrations up to 146 μg NO3 --N mL−1. Presence of a water table in the mineral soil reduced leaching losses (as inorganic-N) from 47% to 6%, incrased plant uptake and doubled apparent denitrification losses. In the peat soils leaching losses of applied urine-N as inorganic-N were low (<5%). Losses of N as N2O were greater in the mineral soil than in the peat soils, with losses of 3% and <1% of N applied respectively after 100 days. Apparent denitrification losses far exceeded N2O losses and it is postulated that the difference could be due to dinitrogen (N2) loss and soil entrapment of N2. Kluwer Academic Publishers, 1996 dentrification nationallicence leaching nationallicence lysimeter nationallicence 15N nationallicence ryegrass nationallicence white clover nationallicence Clough T. AgResearch, Ruakura Agricultural Research Centre, Hamilton, New Zealand aut Sherlock R. Soil Science Department, Lincoln University, Canterbury, New Zealand aut Cameron K. Soil Science Department, Lincoln University, Canterbury, New Zealand aut Ledgard S. AgResearch, Ruakura Agricultural Research Centre, Hamilton, New Zealand aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 178/1(1996-01-01), 141-152 0032-079X 178:1<141 1996 178 11104 https://doi.org/10.1007/BF00011172 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00011172 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Clough T. AgResearch, Ruakura Agricultural Research Centre, Hamilton, New Zealand aut NATIONALLICENCE 700 1- Sherlock R. Soil Science Department, Lincoln University, Canterbury, New Zealand aut NATIONALLICENCE 700 1- Cameron K. Soil Science Department, Lincoln University, Canterbury, New Zealand aut NATIONALLICENCE 700 1- Ledgard S. AgResearch, Ruakura Agricultural Research Centre, Hamilton, New Zealand aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 178/1(1996-01-01), 141-152 0032-079X 178:1<141 1996 178 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer