01706naa a2200253 a 450000100080000000500110000800800410001902400320006010000220009224501070011426000090022152009360023065300170116665300250118370000200120870000220122870000210125070000180127170000240128970000170131370000190133070000180134977300850136720275352015-10-29       2015    bl ---       0--  u    #d7 a10.102/acs.est.5b015042DOI1 aPAREDES, D. da S.  aNitrous oxide and methane fluxes following ammonium sulfate and vinasse application on sugar cane soil  c2015  aThis study aimed to quantify nitrous oxide (N2O) and methane (CH4) emission/sink response from sugar cane soil treated with fertilizer nitrogen (N) and vinasse applied separately or in sequence, the latter being investigated with regard to the time interval between applications for a possible effect on emissions. The study was carried out in a traditional area of unburned sugar cane in São Paulo state, Brazil. Two levels of N fertilization (0 and 100 kg N ha?1) with no added vinasse and combined with vinasse additions at different times (100 m?3 ha?1 at 3 and 15 days after N fertilization) were evaluated. Methane and N2O fluxes were monitored for 211 days. On average, the soil was a sink for CH4, which was not affected by the treatments. Emissions of N2O were induced by N fertilizer and vinasse applications. For ammonium sulfate, 0.6% of the added N was emitted as N2O, while for vinasse, this ranged from 1.0 to 2.2%.  aN fertilizer  aSugarcane production1 aALVES, B. J. R.1 aSANTOS, M. A. dos1 aDANTAS, A. A. C.1 aBOLONHEZI, D.1 aSANT'ANNA, S. A. C.1 aURQUIAGA, S.1 aLIMA, M. A. de1 aBODDEY, R. M.  tEnvironmental Science & Technology, Washington, DCgv. 49, p. 11209-11217, 2015.