Biochar and soil nitrous oxide emissions

Carlos Francisco Brazão Vieira Alho; Abmael da Silva Cardoso; Bruno José Rodrigues Alves; Etelvino Henrique Novotny

doi:10.1590/S1678-3921.pab2012.v47.10030

Biochar and soil nitrous oxide emissions

Authors

Carlos Francisco Brazão Vieira Alho Federal Rural University of Rio de Janeiro
Abmael da Silva Cardoso Federal Rural University of Rio de Janeiro
Bruno José Rodrigues Alves Embrapa Agrobiologia
Etelvino Henrique Novotny Embrapa Solos

DOI:

https://doi.org/10.1590/S1678-3921.pab2012.v47.10030

Keywords:

lignocellulosic residues, greenhouse gases, pyrolysis

Abstract

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.

Author Biographies

Carlos Francisco Brazão Vieira Alho, Federal Rural University of Rio de Janeiro
Abmael da Silva Cardoso, Federal Rural University of Rio de Janeiro
Bruno José Rodrigues Alves, Embrapa Agrobiologia
Etelvino Henrique Novotny, Embrapa Solos

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Published

2012-06-15

Issue

v.47, n.5, maio 2012: 3rd International Biochar Conference

Section

SCIENTIFIC NOTES

How to Cite

Alho, C. F. B. V., Cardoso, A. da S., Alves, B. J. R., & Novotny, E. H. (2012). Biochar and soil nitrous oxide emissions. Pesquisa Agropecuaria Brasileira, 47(5), 722-725. https://doi.org/10.1590/S1678-3921.pab2012.v47.10030

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Biochar and soil nitrous oxide emissions

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