Sulphur studies in soil

Freney, J. R. (John Raymond) (1957). Sulphur studies in soil M.Sc Thesis, School of Molecular and Microbial Sciences, The University of Queensland.

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Author Freney, J. R. (John Raymond)
Thesis Title Sulphur studies in soil
School, Centre or Institute School of Molecular and Microbial Sciences
Institution The University of Queensland
Publication date 1957
Thesis type M.Sc Thesis
Total pages 26
Language eng
Subjects 0701 Agriculture, Land and Farm Management
Formatted abstract
A study of techniques for the determination of sulphate in soil, was made and a new method was developed. This method made use of the insolubility of barium sulphate to separate the sulphur from interfering substances. The barium sulphate was determined, via reduction to hydrogen sulphide, as methylene blue.

A method was also developed for the determination of the sulphur status of a series of basaltic soils. (Sulphur status was measures by the growth of Phalaris tuberosa L. in pots.) Reducible sulphur, determined by digesting the soil with a mixture containing hydriodic acid, red phosphorus, and formic acid was found to be strongly correlated with plant growth, and was therefore a reliable indicator of the sulphur status of this series of soils.

The reducible sulphur was found to be sulphate sulphur which was tightly bound up in the organic matter. It can not be extracted by any of the normal extractants used for the determination of “available” nutrients in soil.
Keyword Soils -- Sulfur content.

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
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Created: Mon, 27 Sep 2010, 09:40:11 EST by Ning Jing on behalf of Social Sciences and Humanities Library Service