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Biological and Chemical Degradation of Atrazine in Three Oregon Soils

Published online by Cambridge University Press:  12 June 2017

H. D. Skipper  and
V. V. Volk
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Abstract

Microbial degradation of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) and 2-hydroxy-4-(ethylamino)-6-(isopropylamino)-s-triazine (hydroxyatrazine) was investigated in three Oregon soils. Hydrolysis of atrazine was determined by the presence of 14C-hydroxyatrazine in methanol extracts. Respired 14CO2 from the 14C-ethyl side chain of atrazine represented less than 10% of the added 14C in the soils after 28 days. Degradation was dependent on soil type, atrazine concentration, and moisture content. The isopropyl and ring constituents of atrazine were subject to minimal attack. The hydroxyatrazine ring was attacked more readily than the atrazine ring. Hydroxyatrazine accounted for approximately 10% of the extracted 14C from 14C-atrazine-treated Parkdale-A, Parkdale-C, and Coker soils and 40% from the Woodburn soil. Hydrolysis was the dominant pathway of detoxification in the Woodburn soil, whereas detoxification of atrazine in Parkdale-A, Parkdale-C, and Coker soils was a combination of chemical hydrolysis and slow microbial degradation by N-dealkylation of the ethyl side chain constituent.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 4 , July 1972 , pp. 344 - 347
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Armstrong, D. E. and Chesters, G. 1968. Adsorption catalyzed chemical hydrolysis of atrazine. Environ. Sci. Technol. 2:683–689.Google Scholar
2. Bray, G. A. 1960. A simple efficient liquid scintillator for counting aqueous solutions in a liquid scintillation counter. Anal. Biochem. 1:279–285.CrossRefGoogle Scholar
3. Gibson, D. T. 1968. Microbial degradation of aromatic compounds. Science 164:389–396.Google Scholar
4. Goswami, K. P. and Green, R. E. 1971. Microbial degradation of the herbicide atrazine and its 2-hydroxy analog in submerged soils. Environ. Sci. Technol. 5:426–429.CrossRefGoogle Scholar
5. Harris, C. I. 1967. Fate of 2-chloro-s-triazine herbicides in soil. J. Agr. Food Chem. 15:157–162.CrossRefGoogle Scholar
6. Hayaishi, O. and Nozaki, M. 1969. Nature and mechanisms of oxygenases. Science 164:389–396.Google Scholar
7. Kaufman, D. D. and Kearney, P. C. 1970. Microbial degradation of s-triazine herbicides. Residue Reviews 32: 235–265.Google ScholarPubMed
8. McCormick, L. L. and Hiltbold, A. E. 1966. Microbiological decomposition of atrazine and diuron in soil. Weeds 14:77–82.CrossRefGoogle Scholar
9. Mortland, M. M. and Raman, K. V. 1968. Surface acidity of smectites in relation to hydration, exchangeable cation and structure. Clays and Clay Minerals 16:393–398.CrossRefGoogle Scholar
10. Parr, J. F. and Reuszer, H. W. 1962. Organic matter decomposition as influenced by oxygen level and flow rate of gases in the constant aeration method. Soil Sci. Soc. Amer. Proc. 26:552–556.CrossRefGoogle Scholar
11. Roeth, F. W., Lavy, T. L. and Burnside, O. C. 1969. Atrazine degradation in two soil profiles. Weed Sci. 17:202–205.CrossRefGoogle Scholar
12. Sheets, T. J. and Shaw, W. C. 1963. Herbicidal properties and persistence in soils of s-triazines. Weeds 11:15–21.CrossRefGoogle Scholar
13. Skipper, H. D., Gilmour, C. M. and Furtick, W. R. 1967. Microbial versus chemical degradation of atrazine in soils. Soil Sci. Soc. Amer. Proc. 31:653–656.CrossRefGoogle Scholar
14. Weber, J. B. and Coble, H. D. 1968. Microbial decomposition of diquat adsorbed on montmorillonite and kaolinite clays. J. Agr. Food Chem. 16:475–478.Google Scholar