Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-22T21:20:01.909Z Has data issue: false hasContentIssue false
  • English
  • Français

Factors Influencing Microbial Degradation of 14C-Glyphosate to 14CO2 in Soil

Published online by Cambridge University Press:  12 June 2017

Loren J. Moshier  and
Donald Penner
Loren J. Moshier
Affiliation:
Dep. Crop and Soil Sci., Michigan State Univ., East Lansing, MI 48824
Donald Penner
Affiliation:
Dep. Crop and Soil Sci., Michigan State Univ., East Lansing, MI 48824
Get access Rights & Permissions [Opens in a new window]

Abstract

14C-glyphosate [N-(phosphonomethyl)glycine] degradation to 14CO2 was examined in a Spinks sandy loam, Collamer silt loam, and a Norfolk loamy sand. After 32 days, 40, 9.5, and 3% of the 14C-glyphosate was recovered as 14CO2 in the three soils, respectively. The degradation was primarily microbial. Phosphate additions stimulated 14C-glyphosate degradation to a limited extent in the Collamer silt loam but not in the Norfolk loamy sand. Additions of Fe+++ and Al+++ ions reduced degradation in the Spinks sandy loam. It is postulated that formation of colloidal Fe and Al precipitates in modified soils with concomitant adsorption of 14C-glyphosate is responsible for decreased availability of 14C-glyphosate to microorganisms. Mn++ additions were found to increase degradation. Spinks soil and carbon substrate amendments failed to substantially increase degradation rates in both soils with low degradation rates.

Keywords

Phosphateferric chloridepHglucose
Type
Research Article
Information
Weed Science , Volume 26 , Issue 6 , November 1978 , pp. 686 - 691
Copyright
Copyright © 1978 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Hance, R. J. 1976. Adsorption of glyphosate by soils. Pestic. Sci. 7:363–366.Google Scholar
2. Kaufman, D. D. 1964. Microbial degradation of 2,2-dichloropropionic acid in five soils. Can. J. Microbiol. 10:843–852.CrossRefGoogle ScholarPubMed
3. Kaufman, D. D. 1974. Degradation of pesticides by soil microorganisms. Pages 133–202 in Guenzi, W. D., ed. Pesticides in Soil and Water. Soil Sci. Soc. Am., Madison, Wisconsin.Google Scholar
4. Kaufman, D. D., Plimmer, J. R., Kearney, P. C., Blake, J., and Guardia, F. S. 1968. Chemical versus microbial decomposition of amitrole in soil. Weed Sci. 16:266–272.Google Scholar
5. Ladlie, J. S., Meggitt, W. F., and Penner, D. 1976. Effect of soil pH on microbial degradation, adsorption, and mobility of metribuzin. Weed Sci. 24:477–481.CrossRefGoogle Scholar
6. Lindsay, W. L. 1972. Inorganic phase equilibria of micronutrients in soils. Pages 43–46 in Mortvelt, J. J., ed. Micronutrients in Agriculture. Soil Sci. Soc. Am., Madison, Wisconsin.Google Scholar
7. Rueppel, M. L., Marvel, J. T., and Brightwell, B. B. 1975. The metabolism and dissipation of N-phosphonomethylglycine in soil and water. Am. Chem. Soc. Abstr. No. 26.Google Scholar
8. Sillen, L. G. and Martell, A. E. 1964. 2nd ed. Stability Constants of Metal-ion Complexes. Chem. Soc., Spec. Publ. No. 17, London.Google Scholar
9. Sprankle, P., Meggitt, W. F., and Penner, D. 1976. Adsorption, mobility and microbial degradation of glyphosate in soil. Weed Sci. 23:229–234.CrossRefGoogle Scholar
10. Tiedje, J. M. and Mason, B. B. 1974. Biodegradation of nitrilotriacetate (NTA) in soils. Soil Sci. Soc. Am. Proc. 38:278–283.CrossRefGoogle Scholar
11. Weed Science Society of America. 1974. Herbicide Handbook, 3rd ed. pp. 201–204. WSSA, Champaign, Illinois.Google Scholar