Hostname: page-component-77c89778f8-9q27g Total loading time: 0 Render date: 2024-07-21T22:41:02.788Z Has data issue: false hasContentIssue false
  • English
  • Français

Time-dependent adsorption of imazethapyr to soil

Published online by Cambridge University Press:  20 January 2017

David H. Johnson ,
Dale L. Shaner ,
James Deane ,
Lorraine A. Mackersie  and
Gary Tuxhorn
Dale L. Shaner
Affiliation:
BASF Agro Research, P.O. Box 400, Princeton, NJ 08543
James Deane
Affiliation:
BASF Agro Research, P.O. Box 400, Princeton, NJ 08543
Lorraine A. Mackersie
Affiliation:
BASF Agro Research, P.O. Box 400, Princeton, NJ 08543
Gary Tuxhorn
Affiliation:
BASF Agro Research, P.O. Box 400, Princeton, NJ 08543
Get access Rights & Permissions [Opens in a new window]

Abstract

Time-dependent adsorption of imazethapyr was studied in the laboratory on a sandy loam soil at 16% moisture for 30 d. Soil pH was adjusted to 4.5 to 6.8. Concentration of imazethapyr in soil water declined rapidly within the first day of incubation for all soil pH levels, indicating rapid initial adsorption. However, the concentration of imazethapyr in the soil water continued to decline slowly over time. Even at pH 6.8, where batch equilibrium studies at high solution to soil ratios indicated low adsorption, only 22% of the applied imazethapyr was in solution 10 d after treatment (DAT), and 10% 30 DAT. Soil column mobility studies also showed a rapid decline in mobility as time after application increased. The amount of imazethapyr remaining in soil columns rapidly increased within 4 to 10 DAT, even at pH 7.8, where low adsorption is predicted. Imazethapyr was stable during the time of these experiments, so degradation to less soluble or more tightly bound products is not the reason for the increased adsorption. These results indicate that batch equilibrium studies that use slurries with high solution to soil ratios (often 2:1 or higher) and short equilibration times may not accurately predict mobility of acidic herbicides in the field, where moisture content is lower.

Keywords

ImazethapyrSoil moisturemobilityleachingadsorption hysteresis
Type
Research Article
Information
Weed Science , Volume 48 , Issue 6 , December 2000 , pp. 769 - 775
Copyright
Copyright © 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

Ahrens, W. H., ed. 1994. Herbicide Handbook. 7th ed. Champaign, IL: Weed Science Society of America. 167 p.Google Scholar
Basham, G., Lavy, T., Oliver, L., and Scott, H. D. 1987. Imazaquin persistence and mobility in three Arkansas soils. Weed Sci. 35:576–582.Google Scholar
Che, M., Loux, M. M., Traina, S. J., and Logan, T. J. 1992. Effect of pH on sorption and desorption of imazaquin and imazethapyr on clays and humic acid. J. Environ. Qual. 21:698–703.Google Scholar
Devine, J. 1991. Residue analysis. Pages 173–178 In Shaner, D. L. and O’Connor, S. L., eds. The Imidazolinone Herbicides. Boca Raton, FL: CRC Press.Google Scholar
Flint, J. L. and Witt, W. W. 1997. Microbial degradation of imazaquin and imazethapyr. Weed Sci. 45:586–591.CrossRefGoogle Scholar
Franklin, R. E., Quisenberry, V. L., Gossett, B. J., and Murdock, E. C. 1994. Selection of herbicide alternatives based on probable leaching to groundwater. Weed Technol. 8:6–16.Google Scholar
Gan, J., Weimer, M. R., Koskinen, W. C., Buhler, D. D., Wyse, D. L., and Becker, R. L. 1994. Sorption and desorption of imazethapyr and 5-hydroxyimazethapyr in Minnesota soils. Weed Sci. 42:92–97.Google Scholar
Goetz, A. J. and Lavy, T. L. 1988. Mobility and sorptive properties of imazethapyr in Arkansas soils. Proc. South. Weed Sci. Soc. 41:337.Google Scholar
Goetz, A. J., Lavy, T. L., and Gbur, E. E. Jr. 1990. Degradation and field persistence of imazethapyr. Weed Sci. 38:421–428.Google Scholar
Hillel, D. 1982. Introduction to Soil Physics. Orlando, FL: Academic Press, pp. 1–16.Google Scholar
Loux, M. M., Liebl, R. A., and Slife, F. W. 1989a. Adsorption of imazaquin and imazethapyr on soils, sediments, and selected adsorbents. Weed Sci. 37:712–718.Google Scholar
Loux, M. M., Liebl, R. A., and Slife, F. W. 1989b. Availability and persistence of imazaquin, imazethapyr, and clomazone in soil. Weed Sci. 37:259–267.CrossRefGoogle Scholar
Mangels, G. 1991. Behavior of the imidazolinone herbicides in soil—a review of literature. Pages 191–209 In Shaner, D. L. and O’Connor, S. L., eds. The Imidazolinone Herbicides. Boca Raton, FL: CRC Press.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
O’Dell, J. D., Wolt, J. D., and Jardine, P. M. 1992. Transport of imazethapyr in undisturbed soil columns. Soil Sci. Soc. Am. J. 56:1711–1715.Google Scholar
Oliveira, R. S., Koskinen, W. C., Ferreira, F. A., Khakural, B. R., Mulla, D. J., and Robert, P. J. 1999. Spatial variability of imazethapyr sorption in soil. Weed Sci. 47:243–248.Google Scholar
Raman, K. V. and Mortland, M. M. 1969. Proton transfer at clay mineral surfaces. Soil Sci. Soc. Am. Proc. 33:313–317.Google Scholar
Renner, K. A., Meggitt, W. F., and Penner, D. 1988. Effect of soil pH on imazaquin and imazethapyr adsorption to soil and phytotoxicity to corn (Zea mays). Weed Sci. 36:78–83.CrossRefGoogle Scholar
Shaner, D. L. and O’Connor, S. L., eds. 1991. The Imidazolinone Herbicides. Appendix A. Boca Raton, FL: CRC Press, p. 262.Google Scholar
Stougaard, R. N., Shea, P. J., and Martin, A. R. 1990. Effect of soil type and pH on adsorption, mobility, and efficacy of imazaquin and imazethapyr. Weed Sci. 38:67–73.CrossRefGoogle Scholar
Weber, J. and Swain, L. R. 1986. Herbicide mobility in soil leaching columns. Pages 189–200 In Camper, N. D., ed. Research Methods in Weed Science. Champaign, IL: Southern Weed Science Society.Google Scholar
Wepplo, P. J. 1991. Chemical and physical properties of the imidazolinones. Pages 15–29 In Shaner, D. L. and O’Connor, S. L., eds. The Imidazolinone Herbicides. Boca Raton, FL: CRC Press.Google Scholar