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Plant Selenium from Soil and the Atmosphere.

Haygarth, Philip M. and Harrison, Anthony F. and Jones, Kevin C. (1995) Plant Selenium from Soil and the Atmosphere. Journal of Environmental Quality, 24 (4). pp. 768-771.

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Abstract

Transfer of selenium (Se) to pasture is important for prevention of Se deficiency in livestock, yet little is known about the relative importance of inputs to pasture from soil and the atmosphere. An isotope dilution method was used to assess quantitatively the importance of these inputs to ryegrass. Soil was labelled with 75Se and subjected to two field treatments that were untreated (pH 6.0) and limed (pH 7.0). After an initial period of equilibration, the specific activity of Se associated with unwashed leaves became lower than that of soil. This indicated that atmospheric Se had been deposited onto and possibly incorporated into the ryegrass. The percent contribution of 75Se in pasture leaves derived from the soil was 47% (pH 6.0) and 70% (pH 7.0), with, by inference, the remainder coming from the atmosphere.

Item Type: Article
Journal or Publication Title: Journal of Environmental Quality
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22275
Deposited By: ep_ss_importer
Deposited On: 06 Feb 2009 16:51
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 15:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22275

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