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The influence of organic and mineral nitrogen fertilizers on microbial biomass nitrogen and extractable organic nitrogen in long-term experiments with maize

Author

Listed:
  • J. Černý

    (Czech University of Agriculture in Prague, Czech Republic)

  • J. Balík

    (Czech University of Agriculture in Prague, Czech Republic)

  • D. Pavlíková

    (Czech University of Agriculture in Prague, Czech Republic)

  • M. Zitková

    (Czech University of Agriculture in Prague, Czech Republic)

  • K. Sýkora

    (Czech University of Agriculture in Prague, Czech Republic)

Abstract

Microbial biomass nitrogen and extractable organic nitrogen in extractions by 0.05M K2SO4 and 0.01M CaCl2 were studied in a long-term experiment with successive growing of silage maize. The highest content of microbial biomass nitrogen was measured for manure treatment, by 38-133% higher than for the control. In treatments with applications of mineral nitrogen fertilizers microbial biomass N was lower on average by 22-30% against the control. Extractable organic nitrogen was also lower in treatments with mineral N fertilizers compared to the control: by 23% in ammonium sulphate treatment and by 29% in DAM. The highest content of extractable organic nitrogen was determined for manure treatment. There was a positive correlation (r = 0.44-0.9) between microbial biomass nitrogen and extractable organic nitrogen in the extractions by 0.01M CaCl2 and 0.05M K2SO4.

Suggested Citation

  • J. Černý & J. Balík & D. Pavlíková & M. Zitková & K. Sýkora, 2003. "The influence of organic and mineral nitrogen fertilizers on microbial biomass nitrogen and extractable organic nitrogen in long-term experiments with maize," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 49(12), pages 560-564.
    • Handle: RePEc:caa:jnlpse:v:49:y:2003:i:12:id:4194-pse
    DOI: 10.17221/4194-PSE
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    Citations

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    Cited by:

    1. L. Růžek & M. Nováková & K. Voříšek & I. Skořepová & L. Vortelová & Z. Kalfařová & J. Černý & T. Částka & W. Barabasz, 2005. "Microbial biomass-C determined using CaCl2 and K2SO4 as extraction reagents," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 51(10), pages 439-446.
    2. J. Černý & J. Balík & M. Kulhánek & K. Čásová & V. Nedvěd, 2010. "Mineral and organic fertilization efficiency in long-term stationary experiments," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 56(1), pages 28-36.
    3. L. Růžek & K. Voříšek & S. Strnadová & M. Nováková & W. Barabasz, 2004. "Microbial characteristics, carbon and nitrogen content in cambisols and luvisols," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 50(5), pages 196-204.
    4. S.S. Gonet & B. Debska, 2006. "Dissolved organic carbon and dissolved nitrogen in soil under different fertilization treatments," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 52(2), pages 55-63.

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