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This article in SSSAJ

  1. Vol. 45 No. 4, p. 826-828
     
    Received: Nov 18, 1980
    Accepted: Mar 23, 1981


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doi:10.2136/sssaj1981.03615995004500040031x

Variation in Natural N-15 Abundance of Central Saskatchewan Soils1

  1. R. E. Karamanos,
  2. R. P. Voroney and
  3. D. A. Rennie2

Abstract

Abstract

Natural 15N abundance data from 38 well-drained cultivated, 11 native pasture, and 9 saline seep soil profiles from Saskatchewan were compiled. The mean δa15N value (per mill 15N excess) for all surface soil samples was 9.4 with a standard deviation of 3.0. Land use was not a factor determining δa 15N values as there was no differences in the δa15N values of surface soil samples from cultivated and native pasture areas; the mean δa15N value for both these types of profiles was 8.6 with a standard deviation of 1.9. However, the mean δa15N value for saline seeps (13.8 ± 3.8) was significantly higher than that of either well-drained cultivated or pasture soils.

Spatial variability does not appear to unduly limit use of natural variations in 15N abundance to study important agronomic processes in Chernozemic soils.

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