Folia Microbiologica

, Volume 48, Issue 1, pp 76–82 | Cite as

Long-term fertilization affects the abundance of saprotrophic microfungi degrading resistant forms of soil organic matter

  • M. Gryndler
  • H. Hršelová
  • J. Klír
  • J. Kubát
  • J. Votruba


The effect of mineral and organic fertilization on the occurrence of soil microorganisms was determined in a field experiment. The colony-forming unit counts of saprotrophic microfungi, when estimated on a silicate gel medium containing fulvic acid as a sole carbon source, increased significantly with increasing doses of mineral and organic fertilization. Partial correlation analysis indicated that, unlike bacteria and actinomycetes, microfungi utilizing fulvic acid were significantly associated with soil organic carbon. No significant effects on bacteria and microfungi counted on common microbiological media were observed but counts of actinomycetes increased in a manured soil extensively fertilized by a mineral fertilizer. Fulvic acid utilizing microfungi, which are associated with areas rich in organics, play possibly the main role in mineralization of resistant forms of soil organic matter.


Soil Organic Matter Soil Organic Carbon Humic Substance Colony Form Unit Fulvic Acid 
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Copyright information

© Institute of Microbiology, Academy of Sciences of the Czech Republic 2003

Authors and Affiliations

  • M. Gryndler
    • 1
  • H. Hršelová
    • 1
  • J. Klír
    • 2
  • J. Kubát
    • 2
  • J. Votruba
    • 1
  1. 1.Institute of MicrobiologyAcademy of Sciences of the Czech RepublicPragueCzechia
  2. 2.Research Institute of Crop ProductionPragueCzechia

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