Modeling the toxicity of copper and zinc salts to wheat in 14 soils

Warne, Michael St. John, Heemsbergen, Diane, Stevens, Darryl, McLaughlin, Mike, Cozens, Gillian, Whatmuff, Mark, Broos, Kris, Barry, Glenn, Bell, Mike, Nash, David, Pritchard, Deb and Penney, Nancy (2008) Modeling the toxicity of copper and zinc salts to wheat in 14 soils. Environmental Toxicology and Chemistry, 27 4: 786-792. doi:10.1897/07-294.1

Author Warne, Michael St. John
Heemsbergen, Diane
Stevens, Darryl
McLaughlin, Mike
Cozens, Gillian
Whatmuff, Mark
Broos, Kris
Barry, Glenn
Bell, Mike
Nash, David
Pritchard, Deb
Penney, Nancy
Title Modeling the toxicity of copper and zinc salts to wheat in 14 soils
Journal name Environmental Toxicology and Chemistry   Check publisher's open access policy
ISSN 0730-7268
Publication date 2008-04-01
Sub-type Article (original research)
DOI 10.1897/07-294.1
Volume 27
Issue 4
Start page 786
End page 792
Total pages 7
Place of publication Pensacola, FL, United States
Publisher Society of Environmental Toxicology and Chemistry
Language eng
Formatted abstract
Interest is mounting in developing and utilizing soil-specific soil quality guidelines. This requires quantifying the effects that soil physicochemical properties have on various ecotoxicological endpoints, including phytotoxicity. To this end, 14 agricultural soils from Australia with differing soil properties were spiked with copper (Cu) and zinc (Zn) salts and used to conduct 21-d plant growth inhibition tests using wheat (Triticum aestivum L.) in pot trials. The toxicity of Cu and Zn was similar with 10% effect concentration (EC10) values ranging from 110 to 945 and from 235 to 965 mg/kg, respectively, while the corresponding median effect concentration (EC50) values ranged from 240 to 1,405 and 470 to 1,745 mg/kg, respectively. Copper toxicity values (EC10, EC20, and EC50) were best modeled by the logarithm of cation exchange capacity (CEC) and either soil pH or electrical conductivity. Zinc EC50 and EC20 values were best modeled using the logarithm of CEC, while the EC10 data were best modeled using soil pH and the logarithm of organic carbon. These models generally estimated toxicity within a factor of two of the measured values.
Keyword Copper
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
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Created: Tue, 08 Mar 2011, 00:35:58 EST