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Some factors in low‐temperature storage influencing the mineralisable‐nitrogen of soils
Author(s) -
Harding D. E.,
Ross D. J.
Publication year - 1964
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740151203
Subject(s) - soil water , nitrogen , nitrate , ammonium , incubation , ammonium nitrate , moisture , chemistry , environmental chemistry , water content , agronomy , zoology , environmental science , biology , soil science , geology , biochemistry , organic chemistry , geotechnical engineering
The effect of storing soils at −20° on their subsequent ability to mineralise nitrogen on incubation differs according to the soil, because significantly more mineral‐N (ammonium‐and nitrate‐N) and nitrate‐N was produced by three of four soils tested. These increases, apparently induced by freezing and thawing, may have been partly related to the moisture and carbon contents of the soils. Samples stored for different periods up to 6–9 months differed little in their rates of mineralisation. Experiments with added ammonium‐N suggested, however, that numbers of nitrifying organisms decreased after 6 months storage.