01383naa a2200277 a 450000100080000000500110000800800410001902400570006010000220011724500690013926000090020852005840021765000120080165000100081365000210082365000140084465000180085865300250087665300290090165300140093065300300094470000220097470000200099670000190101677300700103519372562021-11-03       2012    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1590/S0100-204X20120005000132DOI1 aALHO, C. F. B. V.  aBiochar and soil nitrous oxide emissions.h[electronic resource]  c2012  aThe objective of this work was to evaluate the effect of biochar application on soil nitrous oxide emissions. The experiment was carried out in pots under greenhouse conditions. Four levels of ground commercial charcoal of 2 mm (biochar) were evaluated in a sandy Albaqualf (90% of sand): 0, 3, 6, and 9 Mg ha‑1. All treatments received 100 kg ha‑1 of N as urea. A cubic effect of biochar levels was observed on the N2O emissions. Biochar doses above 5 Mg ha‑1 started to mitigate the emissions in the evaluated soil. However, lower doses promote the emissions.  abiochar  agases  aGreenhouse gases  aPyrolysis  aEfeito Estufa  aGas de efeito estufa  aLignocellulosic residues  aPirólise  aResíduo lignocelulósico1 aCARDOSO, A. da S.1 aALVES, B. J. R.1 aNOVOTNY, E. H.  tPesquisa Agropecuária Brasileiragv. 47, n. 5, p. 722-725, 2012.