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Soil Microbial Activity in Conventional and Organic Agricultural Systems

Author

Listed:
  • Ademir S.F. Araújo

    () (Laboratório de Qualidade do Solo, Universidade Federal do Piauí, Centro de Ciências Agrárias, Teresina, PI, 64000-000, Brazil)

  • Luiz F.C. Leite

    () (Embrapa Meio Norte, Av. Duque de Caxias, SN, Teresina, PI, 64000-000, Brazil)

  • Valdinar B. Santos

    () (Universidade Estadual do Piauí, Av. Nossa Senhora de Fátima, Parnaíba, PI, 64202-220, Brazil)

  • Romero F.V. Carneiro

    () (Laboratório de Qualidade do Solo, Universidade Federal do Piauí, Centro de Ciências Agrárias, Teresina, PI, 64000-000, Brazil)

Abstract

The aim of this study was to evaluate microbial activity in soils under conventional and organic agricultural system management regimes. Soil samples were collected from plots under conventional management (CNV), organic management (ORG) and native vegetation (AVN). Soil microbial activity and biomass was significantly greater in ORG compared with CNV. Soil bulk density decreased three years after adoption of organic system. Soil organic carbon (SOC) was higher in the ORG than in the CNV. The soil under organic agricultural system presents higher microbial activity and biomass and lower bulk density than the conventional agricultural system.

Suggested Citation

  • Ademir S.F. Araújo & Luiz F.C. Leite & Valdinar B. Santos & Romero F.V. Carneiro, 2009. "Soil Microbial Activity in Conventional and Organic Agricultural Systems," Sustainability, MDPI, Open Access Journal, vol. 1(2), pages 1-9, June.
  • Handle: RePEc:gam:jsusta:v:1:y:2009:i:2:p:268-276:d:5136
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    More about this item

    Keywords

    microbial activity; microbial biomass; soil organic matter; bulk density;

    JEL classification:

    • Q - Agricultural and Natural Resource Economics; Environmental and Ecological Economics
    • Q0 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General
    • Q2 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation
    • Q3 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Nonrenewable Resources and Conservation
    • Q5 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics
    • Q56 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth
    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products

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