Biochar and soil nitrous oxide emissions

Authors

  • Carlos Francisco Brazão Vieira Alho Universidade Federal Rural do Rio de Janeiro
  • Abmael da Silva Cardoso Universidade Federal Rural do 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, Universidade Federal Rural do Rio de Janeiro

Abmael da Silva Cardoso, Universidade Federal Rural do Rio de Janeiro

Bruno José Rodrigues Alves, Embrapa Agrobiologia

Etelvino Henrique Novotny, Embrapa Solos

Downloads

Published

2012-06-15

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

Issue

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

Section

SCIENTIFIC NOTES