Models for the field-based toxicity of copper and zinc salts to wheat in 11 Australian soils and comparison to laboratory-based models

Warne, Michael St. J., Heemsbergen, Diane, McLaughlin, Mike, Bell, Mike, Broos, Kris, Whatmuff, Mark, Barry, Glenn, Nash, David, Pritchard, Deb and Penney, Nancy (2008) Models for the field-based toxicity of copper and zinc salts to wheat in 11 Australian soils and comparison to laboratory-based models. Environmental Pollution, 156 3: 707-714. doi:10.1016/j.envpol.2008.06.012


Author Warne, Michael St. J.
Heemsbergen, Diane
McLaughlin, Mike
Bell, Mike
Broos, Kris
Whatmuff, Mark
Barry, Glenn
Nash, David
Pritchard, Deb
Penney, Nancy
Title Models for the field-based toxicity of copper and zinc salts to wheat in 11 Australian soils and comparison to laboratory-based models
Journal name Environmental Pollution   Check publisher's open access policy
ISSN 0269-7491
1873-6424
Publication date 2008-12-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.envpol.2008.06.012
Volume 156
Issue 3
Start page 707
End page 714
Total pages 8
Place of publication East Park, Kidlington, Oxford, U.K.
Publisher Pergamon
Language eng
Formatted abstract
Laboratory-based relationships that model the phytotoxicity of metals using soil properties have been developed. This paper presents the first field-based phytotoxicity relationships. Wheat (Triticum aestivum L.) was grown at 11 Australian field sites at which soil was spiked with copper (Cu) and zinc (Zn) salts. Toxicity was measured as inhibition of plant growth at 8 weeks and grain yield at harvest. The added Cu and Zn EC10 values for both endpoints ranged from approximately 3 to 4760 mg/kg. There were no relationships between field-based 8-week biomass and grain yield toxicity values for either metal. Cu toxicity was best modelled using pH and organic carbon content while Zn toxicity was best modelled using pH and the cation exchange capacity. The best relationships estimated toxicity within a factor of two of measured values. Laboratory-based phytotoxicity relationships could not accurately predict field-based phytotoxicity responses.
Keyword Zinc
Copper
Wheat
Phytotoxicity
Soil properties
Microbial processes
Contaminated soils
Sewage Sludge
Cadmium
Plants
pH
Speciation
Metals
Cd
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article note: "Field-based toxicity of Cu and Zn to wheat can be modelled using soil properties. Laboratory-based models should not be used to estimate toxicity in the field".

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
 
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Created: Tue, 08 Mar 2011, 00:35:48 EST