The effect of nitrogenous fertilizers on the nitrification of forest soils |
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Authors: | Budimir Popovic |
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Affiliation: | (1) Dept of Ecology and Enviromental Research, Swedish University of Agricultural Science, 750 07 Uppsala, Sweden |
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Abstract: | The effect of fertilization with urea and ammonium nitrate on nitrogen mineralization was studied in a series of laboratory incubation experiments. The samples (humus layer) were collected from field experiments with different applications of fertilizers during a period of 11–14 years. The nitrogen fertilization influenced some chemical properties of the humus layer such as pH, N-Kjeldahl content and the content of inorganic nitrogen, especially in the samples from North Sweden. Nitrate nitrogen was formed in humus samples classified as non-nitrifying in several cases, usually after urea fertilization. |
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Keywords: | Nitrogen fertilization nitrification C/N ratio forest soils incubation experiment |
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