Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-27T09:24:32.371Z Has data issue: false hasContentIssue false
  • English
  • Français

Microbial degradation of imazaquin and imazethapyr

Published online by Cambridge University Press:  12 June 2017

Jerry L. Flint  and
William W. Witt
Jerry L. Flint
Affiliation:
Department of Agronomy, University of Kentucky, Lexington, KY 40546
Get access Rights & Permissions [Opens in a new window]

Abstract

Laboratory studies were conducted to investigate the processes of imazaquin and imazethapyr degradation in soil. Microbial degradation of 14C-imazaquin and 14C-imazethapyr was monitored by measuring 14CO2 evolution compared to nonsterile soil. 14CO2 evolution was greatest from carboxyl-labeled imazaquin and imazethapyr compared to ring-labeled imazaquin and imazethapyr. A corn root bioassay indicated nearly complete loss of herbicidal activity in nonsterile soil after 5 mo, but herbicide activity was reduced only 14% in sterile soil. 14CO2 evolution more than doubled when soil temperature increased from 15 to 30 C. Total CO2 production responded similarly. Degradation of imazaquin and imazethapyr increased as soil moisture increased from 15% (-2.4 MPa) to 75% of field capacity (-0.03 MPa).

Keywords

Imazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidimazethapyr, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidcorn, Zea may slBiodegradation14CO2 evolutionherbicide persistence
Type
Soil, Air, and Water
Information
Weed Science , Volume 45 , Issue 4 , August 1997 , pp. 586 - 591
Copyright
Copyright © 1997 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

Anderson, J.P.E. 1981. Soil moisture and the rates of biodegradation of diallate and triallate. Soil Biol. Biochem. 13: 155–161.CrossRefGoogle Scholar
Anderson, J.P.E. 1984. Herbicide degradation in soil: influence of microbial biomass. Soil Biol. Biochem. 16: 483–489.CrossRefGoogle Scholar
Anderson, J.P.E. and Domsch, K. H. 1976. Microbial degradation of the thiocarbamate herbicide, diallate, in soils and by pure cultures of soil microorganisms. Arch. Environ. Contam. Toxicol. 4: 1–7.Google Scholar
Anderson, J.P.E. and Domsch, K. H. 1978. A physiological method for the quantitative measurement of microbial biomass in soils. Soil Biol. Biochem. 10: 215–221.Google Scholar
Anderson, J.P.E. and Domsch, K. H. 1980. Relationship between herbicide concentration and the enzymatic degradation of 14C-diallate and 14C-triallate in soil. Arch. Environ. Contam. Toxicol. 9: 259–268.Google Scholar
Basham, G. W. and Lavy, T. L. 1987. Microbial and photolytic dissipation of imazaquin in soil. Weed Sci. 35: 865–870.Google Scholar
Basham, G., Lavy, T. L., Oliver, L. R., and Scott, H. D. 1987. Imazaquin persistence and mobility in three Arkansas soils. Weed Sci. 35: 576–582.CrossRefGoogle Scholar
Cantwell, J. R., Liebl, R. A., and Slife, F. W. 1989. Biodegradation characteristics of imazaquin and imazethapyr. Weed Sci. 37: 815–819.Google Scholar
Choi, J. S., Fermanian, T. W., Wehner, D. J., and Spomer, L. A. 1988. Effect of temperature, moisture, and soil texture on DCPA degradation. Agron. J. 80: 108–113.CrossRefGoogle Scholar
Gilmour, J. T., Clark, M. D., and Sigua, G. C. 1985. Estimating net nitrogen mineralization from carbon dioxide evolution. Soil Sci. Soc. Am. J. 49: 1398–1402.CrossRefGoogle Scholar
Goetz, A. J., Wehtje, G., Walker, R. H., and Hajek, B. 1986. Soil solution and mobility characterization of imazaquin. Weed Sci. 34: 788–793.Google Scholar
Hamaker, J. W. and Goring, C.A.I. 1976. Turnover of pesticide residues in the soil. in Kaufman, D. D., Still, G. G., Paulson, G. D., and Bandal, S. K., eds. Bound and Conjugated Residues. American Chemical Society Symposium Series 29. Washington, DC: American Chemical Society, pp. 219–243.Google Scholar
Hance, R. J. 1973. The effect of nutrients on the decomposition of the herbicides atrazine and linuron incubated with soil. Pestic. Sci. 4: 817–821.CrossRefGoogle Scholar
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.Google Scholar
Loux, M. M., Liebl, R. A., and Slife, F. W. 1989. Availability and persistence of imazaquin, imazethapyr, and clomazone in soil. Weed Sci. 37: 259–267.Google Scholar
Mills, J. A. and Witt, W. W. 1989. Efficacy, phytotoxicity, and persistence of imazaquin, imazethapyr, and clomazone in no-till double-crop soybeans (Glycine max). Weed Sci. 37: 353–359.CrossRefGoogle Scholar
Mills, J. A. and Witt, W. W. 1991. Dissipation of imazaquin and imazethapyr under conventional and no-tillage soybean (Glycine max). Weed Technol. 5: 586–591.Google Scholar
Morrill, L. G., Mahilum, B. C., and Mohiuddin, S. C. 1982. Sorption/desorption of organic compounds by soil and soil components. in Organic Compounds in the Soil: Sorption, Degradation, and Persistence. Ann Arbor, MI: Ann Arbor Science Butterworth Group, pp. 1–93.Google Scholar
Potts, C. 1986. Validation of HPLC Method M-1631 for the Determination of CL 252,214 Residues in Soil. Princeton, NJ: American Cyanamid. 12 p.Google Scholar
Renner, K. A., Meggitt, W. F., and Leavitt, R. R. 1988. Influence of rate, method of application, and tillage on imazaquin persistence in soil. Weed. Sci. 36: 90–95.CrossRefGoogle Scholar
Savage, K. E. 1978. Persistence of several dinitroaniline herbicides as affected by soil moisture. Weed Sci. 26: 465–471.Google Scholar
Segel, I. H. 1976. Biochemical Calculations. 2nd ed. New York: J. Wiley, 279 p.Google Scholar
Skipper, H. D., Mueller, J. G., Ward, V. L., and Wagner, S. C. 1986. Microbial degradation of herbicides. in Camper, N. D., ed. Research Methods in Weed Science. 3rd ed. Champaign, IL: Southern Weed Science Society, pp. 458–475.Google Scholar
Steel, R.G.D. and Torrie, J. H. 1980. In Principles and Procedures of Statistics. 2nd ed. New York: McGraw-Hill, pp. 258–278.Google Scholar
Wagner, G. H. 1975. Microbial growth and turnover. in Paul, E. E. and McLaren, A. D., eds. Soil Biochemistry. Volume 3. New York: Marcel-Dekker, pp. 269–305.Google Scholar
Walker, A. 1976. Simulation of herbicide persistence in soil. II. Simazine and linuron in long-term experiments. Pestic. Sci. 7: 50–58.CrossRefGoogle Scholar
Walker, A. 1987. Herbicide persistence in soil. Rev. Weed Sci. 3: 1–18.Google Scholar
Wolt, J. D., Rhodes, G. N., Graveel, J. G., Glosauer, E. M., Amin, M. K., and Church, P. L. 1989. Activity of imazaquin in soil solution as affected by incorporated wheat (Triticum aestivum) straw. Weed Sci. 37: 254–258.Google Scholar
Zimdahl, R. L., Catizone, P., and Butcher, A. C. 1984. Degradation of pendimethalin in soil. Weed Sci. 32: 408–412.CrossRefGoogle Scholar