Nitrogen availability, water-filled pore space, and N2O-N fluxes after biochar application and nitrogen fertilization.
The objective of this work was to investigate the impact of the application of wood biochar, combined with N fertilizations, on N2O-N fluxes, nitrogen availability, and water-filled pore space (WFPS) of a clayey Oxisol under rice (wet season) and common bean (dry season) succession. Manual static chambers were used to quantify N2O-N fluxes from soil immediately after a single application of wood biochar (32 Mg ha-1) and after four crop seasons with N applications (90 kg ha-1 N). Soil ammonium (N-NH4 +) and nitrate (N-NO3-) availability, as well as WFPS, was measured together with N2O-N fluxes. There was no interaction between biochar and N fertilization regarding N2O-N fluxes in any of the four seasons monitored, although these fluxes were clearly enhanced by N applications. At 1.5 and 2.5 years after biochar application, the WFPS decreased. In addition, in the seasons characterized by low WFPS, N2O-N fluxes and soil N-NO3 - and N-NH4 + availability were enhanced after N applications. Long-term experiments in the field are important to quantify the impacts of biochar on N2O-N fluxes and to determine the dynamics of these fluxes on soil-related variables.
Main Authors: | CARVALHO, M. T. de M., MADARI, B. E., BASTIAANS, L., VAN OORT, P. A. J., LEAL, W. G. de O., SOUZA, D. M. de, SANTOS, R. C. dos, MATSUSHIGE, I., MAIA, A. de H. N., HEINEMANN, A. B., MEINKE, H. |
---|---|
Other Authors: | MARCIA THAIS DE MELO CARVALHO, CNPAF; BEATA EMOKE MADARI, CNPAF; LAMMERT BASTIAANS, WAGENINGEN UNIVERSITY; PEPIJN ADRIANUS JOHANNES VAN OORT, AFRICARICE BENIN STATION; WESLEY GABRIEL DE OLIVEIRA LEAL, CNPAF; DIEGO MENDES DE SOUZA, CNPAF; ROBERTO CARLOS GOMES DOS SANTOS, CNPAF; IVA MATSUSHIGE, CNPAF; ALINE DE HOLANDA NUNES MAIA, CNPMA; ALEXANDRE BRYAN HEINEMANN, CNPAF; HOLGER MEINKE, UNIVERSITY OF TASMANIA. |
Format: | Artigo de periódico biblioteca |
Language: | English eng |
Published: |
2016-11-18
|
Subjects: | Gas efeito estufa, Fluxo de gases, Nitrogênio, Solo, Porosidade, Sistema de cultivo, Condicionador do solo, Nitrato, Amonia, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1056600 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Nitrogênio e fluxos de óxido nitroso em sistemas agrícolas integrados e Cerrado nativo.
by: SILVA, R. R., et al.
Published: (2015-04-23) -
Biochar: pyrogenic carbon for agricultural use: a critical review.
by: NOVOTNY, E. H., et al.
Published: (2016-01-18) -
Biochar: pyrogenic carbon for agricultural use: a critical review.
by: NOVOTNY, E. H., et al.
Published: (2015-06-08) -
Protocolo para medição de fluxos de gases de efeito estufa do solo.
by: ZANATTA, J. A., et al.
Published: (2014) -
Espectroscopia fotoacústica para quantificação da volatilização de amônia em solos fertilizados com uréia.
by: FERRAZ JUNIOR, R. S., et al.
Published: (2020-01-06)