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Measurement of Nitrogen Supplying-power of Soils by Extraction with Sodium Bicarbonate

Nature volume 203, pages 1307–1308 (1964)Cite this article

Abstract

GREATLY increased use of fertilizer nitrogen has stimulated interest in the development of more precise methods of measuring the nitrogen supplying-power of soils and estimating fertilizer nitrogen requirements. At present, four approaches are used for this purpose: (1) microbiological methods1 in which nitrogen mineralized during a prescribed period of incubation, usually of 1–2 weeks' duration, is measured; (2) total nitrogen; (3) mineral nitrogen content of fresh2 samples; and (4) nitrogen mineralized as a result of chemical treatment involving acid3,4 or alkaline hydrolysis5.

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Authors and Affiliations

  1. Research Station, Canada Department of Agriculture, Fredericton, New Brunswick

    A. A. MACLEAN

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  1. A. A. MACLEAN
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MACLEAN, A. Measurement of Nitrogen Supplying-power of Soils by Extraction with Sodium Bicarbonate. Nature 203, 1307–1308 (1964). https://doi.org/10.1038/2031307a0

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