Fuller, W.H. and Lanspa, K. (1975) Uptake of iron and copper by sorghum from mine tailings. Journal of Environmental Quality, 4 (3). pp. 417-422.
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Abstract
Tailings from a lead-zinc-copper mine, representative of mine wastes in the Southwest, were reacted with sulfuric acid and ammonia to develop a product which has agricultural value for supplying trace elements, primarily iron. Iron-sulfur compounds (pyrites) are the dominant trace metal-containing minerals. When reacted at 200C for 2 hours with concentrated H2SO4, the water-soluble Fe content of the tailings increases manyfold. Water-soluble Cu also increased but to a very limited amount. Acid-treated tailings stimulated plant growth and Fe uptake by two varieties of sorghum on an agriculturally important calcareous soil of the desert Southwest. The evidence points to a practical possibility of combining stack-gas waste oxides of S (as H2SO4) and mine-tailing wastes into agricultural products. The research further revealed significant growth responses to elemental S applied to soil, which could not be duplicated with SO4 ions, and which were not related to N, P, K, Mn, Cu, or S deficiency. However, response was correlated with Fe and some factor(s) associated with acidification during oxidation of elemental S
| Item Type: | Article |
|---|---|
| Author Affiliation: | University of Arizona Agricultural Experiment Station, Tucson, AZ 87521, USA |
| Subjects: | Plant Protection |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 31 Aug 2012 04:55 |
| Last Modified: | 31 Aug 2012 04:56 |
| Official URL: | http://dx.doi.org/10.2134/jeq1975.0047242500040003... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/7624 |
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