Data/hora: 03/06/2024 09:42:55

Provedor de dados: | 86
País: | Brazil
Título: | Soil biological attributes in pastures of different ages in a crop-livestock integrated system
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.
Data: | 2011-10-01
Ano: | 2011
Palavras-chave: | Metabolic quotient; Microbial biomass carbon; Microbial quotient; Soil respiration.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001000021

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2011001000021
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.46 n.10 2011
Fonte: | info:eu-repo/semantics/openAccess