SSSAJ Journal of Natural Resources and Life Sciences Education
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Published in Soil Sci Soc Am J 19:7-12 (1955)
© 1955 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Dissolved Oxygen in Saturated Soil1

A. D. Scott and D. D. Evans2

ABSTRACT

The polarographic method of measuring dissolved oxygen in saturated soil presented previously by the authors was used in the laboratory to determine what happens to dissolved oxygen in saturated soils that have no plants growing on them. Air dry soils were placed in a special glass cylinder and flooded with air saturated distilled water. The dissolved oxygen content was then recorded for an interval of time. The dissolved oxygen started to decrease immediately after the soil was flooded, and within 10 hours it had disappeared entirely. After the oxygen was depleted, more oxygen was added to the same saturated soils by flushing them with oxygen laden solutions. This added oxygen disappeared even more rapidly than it did in the freshly flooded soils.

Oxidation-reduction potentials were measured in situ with bright platinum electrodes to determine the relationship between these potentials and the dissolved oxygen present. The potentials measured were not found to be a reliable index of the dissolved oxygen present.

NOTES

1 Journal Paper No. J-2497 of the Iowa Agr. Exp. Sta., Ames, Iowa, Project No. 1235. Presented before Div. I, Soil Science Society of America, Dallas, Tex., Nov. 19, 1953.

2 Associate Professor and Assistant Professor in soils, respectively. (Junior author now Associate Professor in soils, Oregon State College, Corvallis, Oreg.)

Received for publication April 3, 1954.




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and Life Sciences Education		 Vadose Zone Journal
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Environmental Quality		 The Plant Genome
Copyright © 1955 by the Soil Science Society of America.