| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Soil biological attributes in pastures of different ages in a crop-livestock integrated system
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| Autores: |
Muniz,Luciano Cavalcante
Madari,Beata Emöke
Trovo,José Benedito de Freitas
Cantanhêde,Ilka South de Lima
Machado,Pedro Luiz Oliveira de Almeida
Cobucci,Tarcísio
França,Aldi Fernandes de Souza
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| Data: |
2011-10-01
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| Ano: |
2011
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| Palavras-chave: |
Metabolic quotient
Microbial biomass carbon
Microbial quotient
Soil respiration
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| Resumo: |
The objective of this work was to evaluate the effect of the pasture (Urochloa brizantha) component age on soil biological properties, in a crop-livestock integrated system. The experiment was carried out in a Brazilian savannah (Cerrado) area with 92 ha, divided into six pens of approximately 15 ha. Each pen represented a different stage of the pasture component: formation, P0; one year, P1; two years, P2; three years, P3; and final with 3.5 years, Pf. Samples were taken in the 0-10 cm soil depth. The soil biological parameters - microbial biomass carbon (MBC), microbial biomass respiration (C-CO2), metabolic quotient (qCO2), microbial quotient (q mic), and total organic carbon (TOC) - were evaluated and compared among different stages of the pasture, and between an adjacent area under native Cerrado and another area under degraded pasture (PCD). The MBC, q mic and TOC increased and qCO2 reduced under the different pasture stages. Compared to PCD, the pasture stages had higher MBC, q mic and TOC, and lower qCO2. The crop-livestock integrated system improved soil microbiological parameters and immobilized carbon in the soil in comparison to the degraded pasture.
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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=S0100-204X2011001000021
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2011001000021
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.46 n.10 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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