| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Nitrogen availability, water-filled pore space, and N2O-N fluxes after biochar application and nitrogen fertilization
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| Autores: |
Carvalho,Márcia Thaís de Melo
Madari,Beáta Emoke
Bastiaans,Lammert
Oort,Pepijn Adrianus Johannes van
Leal,Wesley Gabriel de Oliveira
Souza,Diego Mendes de
Santos,Roberto Carlos dos
Matsushige,Iva
Maia,Aline de Holanda Nunes
Heinemann,Alexandre Bryan
Meinke,Holger
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| Data: |
2016-09-01
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| Ano: |
2016
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| Palavras-chave: |
Cropping systems
Gas fluxes
Greenhouse gases
Nitrate and ammonium
Soil amendment
Soil porosity
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| Resumo: |
Abstract 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901203
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/s0100-204x2016000900020
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.51 n.9 2016
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| Direitos: |
info:eu-repo/semantics/openAccess
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