Direct Assimilation of Ammonium Salts by Plants

It has recently been shown that the soil of some of the Rothamsted Grass Plots which have received ammonium salts for many years in succession has become distinctly acid and that, consequently, nitrifying organisms have become greatly reduced in numbers. Nitrification is limited to portions of soil...

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Bibliographic Details
Published in:The Journal of agricultural science 1909-10, Vol.3 (2), p.179-194
Main Authors: Hutchinson, H. B., Miller, N. H. J.
Format: Article
Language:English
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Summary:It has recently been shown that the soil of some of the Rothamsted Grass Plots which have received ammonium salts for many years in succession has become distinctly acid and that, consequently, nitrifying organisms have become greatly reduced in numbers. Nitrification is limited to portions of soil directly in contact with the few particles of calcium carbonate still remaining in the soil. It is evident therefore that more or less of the nitrogen assimilated by the grasses must be in a form, or in forms, other than nitrate—probably mainly as ammonium salt. In view of these results it seemed desirable to obtain additional evidence of direct assimilation of ammonium salts by plants.
ISSN:0021-8596
1469-5146
DOI:10.1017/S0021859600001118