Priming effect of biuret addition on native soil N mineralisation under laboratory conditions

This study was carried out to quantify the priming effect of biuret on native soil nitrogen (N) mineralisation during a 112-day incubation. Addition of biuret (100 mg 15N-labelled biuret kg −1 soil) increased the turnover rate constant of soil organic matter and had a positive priming effect on nati...

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Bibliographic Details
Published in:Soil biology & biochemistry 2005-10, Vol.37 (10), p.1959-1961
Main Authors: Xue, J.M., Sands, R., Clinton, P.W., Payn, T.W., Skinner, M.F.
Format: Article
Language:English
Subjects:
15N-biuret
Agronomy. Soil science and plant productions
Biochemistry and biology
Biological and medical sciences
biuret
Chemical, physicochemical, biochemical and biological properties
forest soils
Fundamental and applied biological sciences. Psychology
isotope labeling
mineralization
Native soil N
Net N mineralisation
nitrogen
Physics, chemistry, biochemistry and biology of agricultural and forest soils
Priming effect
sandy loam soils
seed priming
silt loam soils
soil amendments
soil properties
Soil science
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Summary:This study was carried out to quantify the priming effect of biuret on native soil nitrogen (N) mineralisation during a 112-day incubation. Addition of biuret (100 mg 15N-labelled biuret kg −1 soil) increased the turnover rate constant of soil organic matter and had a positive priming effect on native soil N mineralisation in two soils. The additional mineralisation was 0.65% of the total soil N (equivalent to 47.1 kg N ha −1) in a sandy loam soil and 0.62% of the soil N (equivalent to 46.5 kg N ha −1) in a silt loam soil.
ISSN:0038-0717
1879-3428
DOI:10.1016/j.soilbio.2005.02.034