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Science 18 December 1964:
Vol. 146. no. 3651, pp. 1574 - 1575
DOI: 10.1126/science.146.3651.1574
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Articles

Variations of Nitrogen-15 Abundance in Soils

H. H. Cheng 1, J. M. Bremner 1, and A. P. Edwards 1

1 Department of Agronomy, Iowa State University, Ames 50010

A survey of the isotopic composition of soil nitrogen has shown that there is variation in the abundance of nitrogen-15 in soils and in different forms of soil nitrogen. The variation detected is small, but it cannot be attributed to analytical errors and should be considered in studies of nitrogen transformation in soils when nitrogen-15 is used as a tracer.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Fertilizer Nitrogen: Contribution to Nitrate in Surface Water in a Corn Belt Watershed.
D. H. Kohl, G. B. Shearer, and B. Commoner (1971)
Science 174, 1331-1334
   Abstract »    PDF »
Nitrogen-15: Microbiological Alteration of Abundance.
R. P. Wellman, F. D. Cook, and H. R. Krouse (1968)
Science 161, 269-270
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)