00922naa a2200193 a 450000100080000000500110000800800410001902200140006010000200007424501130009426000090020750000290021652003310024565000090057665300400058570000180062570000200064377300650066316303652015-03-16       2008    bl ---       0--  u    #d  a1519-89281 aJANTALIA, C. P.  aFluxes of nitrous oxide from soil under different crop rotations and tillage systems in the south of Brasil.  c2008  aParceria: Embrapa Trigo.  aThe aim of this study was to estimate the emission of N2O from cropping systems under conventional and zero tillage in an 18-year-old experiment conducted on a Rhodic Ferralsol in the South of Brazil. Fluxes of N2O were measured over two years using static-closed chambers in the two tillage systems with three crop rotations.  aSoja  aFixação biológica de nitrogênio1 aSANTOS, H. P.1 aALVES, B. J. R.  tNutrient Cycling in Agroecosystems, v, 82, p. 161-173, 2008.