Biomassa microbiana e estoques de C e N do solo em diferentes sistemas de manejo, no Cerrado do Estado do Piauí - DOI: 10.4025/actasciagron.v31i3.687

Maria da Conceição Bezerra da Silva Matias; Adeodato Ari Cavalcante Salviano; Luiz Fernando de Carvalho Leite; Ademir Sérgio Ferreira de Araújo

doi:10.4025/actasciagron.v31i3.687

Microbial biomass and C and N stocks in soil under different management systems in the ‘Cerrado’ of Piauí State - DOI: 10.4025/actasciagron.v31i3.687

Maria da Conceição Bezerra da Silva Matias UFPI
Adeodato Ari Cavalcante Salviano UFPI
Luiz Fernando de Carvalho Leite EMBRAPA
Ademir Sérgio Ferreira de Araújo UFPI

DOI: https://doi.org/10.4025/actasciagron.v31i3.687

Keywords: no-tillage, microbial biomass, basal respiration

Abstract

The aim of this study was to verify the effects of different soil tillage systems on microbial biomass and the total organic C and N stocks in an Oxisol. The soil tillage systems evaluated were: no-tillage (PD) and conventional tillage (PC). A deforested area (ARD) and another with native vegetation (AVN) were used as references. The soil samples were collected in the 0-5, 5-10 and 10-20 cm depths, and in these soil samples were quantified the contents and total stocks of C and N, basal respiration, microbial biomass C (Cmic), and microbial (Cmic/COT) and metabolic (_qCO₂) quotients. The values of microbial biomass C (Cmic) in the soil under PD were higher than those observed in PC and ARD in all depths. The area under no-tillage (PD) showed larger contents of C and N, and stocks of C on the surface of the soil. For the stocks of N, there were no differences among the evaluated areas, in all depths. No-tillage adoption provides an increase in the soil microbial biomass and total C and N stocks, indicating improvement in soil quality.

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Author Biography

Ademir Sérgio Ferreira de Araújo, UFPI

Tem experiência na área de Agronomia, com ênfase em Microbiologia e Bioquímica do Solo, atuando principalmente nos seguintes temas: indicadores biológicos de qualidade do solo, fixação de nitrogênio, atividade e biomassa microbiana e biodegradação, poluição do solo e qualidade ambiental. Líder do grupo de pesquisas "Ecologia microbiana do solo da região Meio Norte" (UFPI/CNPq). Consultor ad-hoc para o CNPq e FAPEPI. Revisor de periódicos Biochemical Enginering Journal e Water, Air & Soil Pollution (Elsevier). Currículo Lattes

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Published

2009-06-23

How to Cite

Matias, M. da C. B. da S., Salviano, A. A. C., Leite, L. F. de C., & Araújo, A. S. F. de. (2009). Microbial biomass and C and N stocks in soil under different management systems in the ‘Cerrado’ of Piauí State - DOI: 10.4025/actasciagron.v31i3.687. Acta Scientiarum. Agronomy, 31(3), 517-521. https://doi.org/10.4025/actasciagron.v31i3.687

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Issue

Vol 31 No 3 (2009)

Section

Soils

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