Field Trial of Dolomitic Limestone as an In Situ Soil Remediation Technique to Reduce Nickel Toxicity in Soybean and Oat

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Field Trial of Dolomitic Limestone as an In Situ Soil Remediation Technique to Reduce Nickel Toxicity in Soybean and Oat

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dc.contributor.advisor Hale, Beverley
dc.contributor.author Cioccio, Stephen Christopher
dc.date 2012-06-25
dc.date.accessioned 2012-09-14T18:35:32Z
dc.date.available 2012-09-14T18:35:32Z
dc.date.issued 2012-09-14
dc.identifier.uri http://hdl.handle.net/10214/4005
dc.description.abstract As more contaminated sites are being discovered, new in situ remediation techniques need to be developed. Chemically treating soil with lime to increase soil pH is a method that may decrease the bioavailability of the contaminant. To test the usefulness of rendering metal-contaminated soils alkaline with dolomitic lime, to improve crop performance, field trials at a site in Port Colborne, ON, with soil nickel concentration (as high as 5000 mg/kg) from refinery emissions were completed. Oat and soybean yield, as well as plant uptake and bioavailabilty of nickel in soil were evaluated. Liming Ni-contaminated soils decreased soybean foliar Ni concentrations from 36.68 µg/g in unlimed fields to 19.98 µg/g in 50 t/ha limed fields in the 2007 growing season; yield of both oat and soybean in unlimed soils was the same (p>0.05) as at a reference site, suggesting that for these soils, remediation is not necessary for yield. en_US
dc.language.iso en en_US
dc.subject Nickel en_US
dc.subject Soybean en_US
dc.subject Oat en_US
dc.subject Bioavailability en_US
dc.subject Remediation en_US
dc.subject Liming en_US
dc.subject Soil Treatment en_US
dc.subject Risk Assessment en_US
dc.title Field Trial of Dolomitic Limestone as an In Situ Soil Remediation Technique to Reduce Nickel Toxicity in Soybean and Oat en_US
dc.type Thesis en_US
dc.degree.programme Land Resource Science en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Land Resource Science en_US


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