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Published in J Environ Qual 3:405-406 (1974)
© 1974 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Nitrogen-15 Variations in Fertilizer Nitrogen1

H. D. Freyer and A. I. M. Aly2

ABSTRACT

Nitrogen-15 concentrations of some commonly used nitrogen fertilizers are measured. Ammonium-nitrogen has lower and nitrate-nitrogen has higher 15N concentrations than atmospheric nitrogen. The mean difference between both is about 4 {delta} 15N.

Key Words: nitrogen-isotope analysis • fertilizer-derived ammonium • fertilizer-derived nitrate

NOTES

1 Contribution from the Institute of Physical Chemistry, Nuclear Research Center Juelich (KFA), 517 Juelich, Federal Republic of Germany.

2 Research Chemist and Graduate Research Assistant, respectively.

Received for publication January 21, 1974.




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 1974 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.