Abstract
A laboratory incubation experiment was conducted to compare the effects of NH sup+inf4 and NO sup-inf3 on mineralization of N from 15N-labelled vetch (Vicia villosa Rotn) in an Illinois Mollisol, and to determine the effect of a nitrification inhibitor (nitrapyrin) on mineralization of vetch N when used with NH sup+inf4 . The addition of either NH sup+inf4 or NO sup-inf3 (100 and 200 mg N kg-1 soil) significantly increased mineralization of vetch N during incubation for 40 days. The effect was greater with NH sup+inf4 than with NO sup-inf3 , and a further increase occurred in the presence of nitrapyrin (10 mg kg-1 soil). The addition of NO sup-inf3 retarded the nitrification of NH sup+inf4 -N derived from vetch.
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Azam, F., Mulvaney, R.L. & Simmons, F.W. Effects of ammonium and nitrate on mineralization of nitrogen from leguminous residues. Biol Fert Soils 20, 49–52 (1995). https://doi.org/10.1007/BF00307840
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DOI: https://doi.org/10.1007/BF00307840