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DIRECT MEASUREMENTS OF THE DISTRIBUTION OF OXYGEN IN SOIL AGGREGATES AND IN COLUMNS OF FINE SOIL CRUMBS
Author(s) -
GREENWOOD D. J.,
GOODMAN D.
Publication year - 1967
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1967.tb01499.x
Subject(s) - agar gel , diffusion , soil water , chemistry , soil science , oxygen , environmental chemistry , environmental science , thermodynamics , biology , organic chemistry , physics , microbiology and biotechnology
Summary The micro electrode of Evans and Naylor was modified to permit measurements of oxygen concentration in soil and was used to determine the distribution of oxygen in ( a ) agar which contained yeast and glucose and served as a model of a respiring water‐saturated soil; ( b ) saturated spherical soil aggregates; ( c ) partly saturated columns of fine soil crumbs. Measurements in (a) and ( b ) but not in ( c ) agreed closely with predictions by diffusion theory. The disagreement appeared to result from water being unevenly distributed in the columns.