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

Authors

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

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

Issue

Vol. 31 No. 3 (2009)

Section

Soils

License

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I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

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