Nor, Y.M. and Tabatabai, M.A. (1977) Oxidation of elemental sulfur in soils. Soil Science Society of America Journal, 41 (4). pp. 736-741.
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Abstract
Studies of oxidation of elemental S in soils showed that thiosulfate and tetrathionate are produced during S oxidation in soils. In this work, unamended and elemental S-amended soils were incubated (30°C) under aerobic conditions for various times. The amounts of S2O3-, S4O6-, and SO4-S produced during incubation were determined. Results showed that S2O32- was produced within the first few days of incubation and that S4O62- accumulated in some soils. The rate of S oxidation increased with increasing incubation temperature (5, 15, and 30°C) and with increasing the rate of S application (50, 100, and 200 µg S/g soil). For 100 µg S/g soil, the rates of oxidation of elemental S in 10 Iowa surface soils ranged from 39 to 75 µg S/g soil after incubation at 30°C for 70 days; rates were more rapid in alkaline soils than in acid soils. There was little change in pH of soils even when the S application rate was increased from 50 to 200 µg S/g soil. The rate of S oxidation was lower in air-dried soils than in field-moist soils
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Agronomy, Iowa State University, Ames |
| Subjects: | Soil Science and Microbiology > Soil Sciences |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 13 Dec 2012 10:31 |
| Last Modified: | 13 Dec 2012 10:31 |
| Official URL: | http://dx.doi.org/10.2136/sssaj1977.03615995004100... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/9086 |
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