The influence of humic and fulvic acids on silver uptake by perennial ryegrass, and its relevance to the cycling of silver in soils

Jones, K. C. and Peterson, P. J. (1986) The influence of humic and fulvic acids on silver uptake by perennial ryegrass, and its relevance to the cycling of silver in soils. Plant and Soil, 95 (1). pp. 3-8. ISSN 0032-079X

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Abstract

An experiment in which perennial ryegrass (Lolium perenne L.) was grown in solution cultures containing various forms of radiosilver (110mAg) is ptake of labelled Ag from solutions containing either AgNO3, Ag2SO4, AgCH3COO, Ag-humic acid (HA) or Ag-fulvic acid (FA) complexes is compared. In each case concentrations of Ag in the plant roots was several fold higher than in the plant shoots. However the Ag concentration in roots from the Ag-HA preparations was only about 5% of that from the AgNO3 solutions; from Ag-FA it was 18%. Transport index values were highest for plants grown in the Ag-HA solution, indicating greater mobility of Ag within these plants. Preliminary data for a selective extraction procedure performed on Ag-HA preparations suggest sorption onto various active sites. The relevance of these findings to the cycling of Ag within soils is discussed.

Item Type: Journal Article
Journal or Publication Title: Plant and Soil
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1100/1110
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 137857
Deposited By: ep_importer_pure
Deposited On: 15 Oct 2019 14:45
Refereed?: Yes
Published?: Published
Last Modified: 01 Jan 2020 12:18
URI: https://eprints.lancs.ac.uk/id/eprint/137857

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