Biochar and soil nitrous oxide emissions.

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Author(s): ALHO, C. F. B. V.; CARDOSO, A. da S.; ALVES, B. J. R.; NOVOTNY, E. H.

Summary: The 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.

Publication year: 2012

Types of publication: Journal article

Unit: Embrapa Soils

Keywords: Efeito Estufa, Gas de efeito estufa, Lignocellulosic residues, Pirólise, Resíduo lignocelulósico, biochar, gases

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