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. ISSN 1537-2537

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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:
Journal Article
Journal or Publication Title:
Journal of Environmental Quality
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2312
Subjects:
?? water science and technologypollutionenvironmental engineeringmanagement, monitoring, policy and lawwaste management and disposalge environmental sciences ??
ID Code:
22275
Deposited By:
Deposited On:
06 Feb 2009 16:51
Refereed?:
No
Published?:
Published
Last Modified:
15 Jul 2024 10:06