Abstract
The changes in size, activity and structure of soil microbial community caused by N fertilization were studied in a laboratory incubation experiment. The rates of N fertiliser applied (KNO3) were 0 (control), 100 and 2,000 μg N g−1 soil. Despite no extra C sources added, a high percentage of N was immobilized. Whereas no significant increase of microbial C was revealed during incubation period, microbial growth kinetics as determined by the substrate-induced growth-response method demonstrated a significant decrease in the specific growth rate of microbial community in soil treated with 2,000 μg N g−1 soil. Additionally, a shift in microbial community structure resulting in an increase in fungal biomarkers, mainly in the treatment with 2,000 μg N g−1 soil was visible.
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This research was supported by Alexander von Humboldt Foundation, Russian Foundation for Basic Researches, and Russian Academy of Sciences.
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Yevdokimov, I., Gattinger, A., Buegger, F. et al. Changes in microbial community structure in soil as a result of different amounts of nitrogen fertilization. Biol Fertil Soils 44, 1103–1106 (2008). https://doi.org/10.1007/s00374-008-0315-1
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DOI: https://doi.org/10.1007/s00374-008-0315-1