Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-21T14:08:12.307Z Has data issue: false hasContentIssue false
  • English
  • Français

Sorption, Mobility and Degradation of Triclopyr and 2,4-D on Four Soils

Published online by Cambridge University Press:  12 June 2017

William G. Johnson ,
Terry L. Lavy  and
Edward E. Gbur
William G. Johnson
Affiliation:
Dep. Agron., Univ. Arkansas, Fayetteville, AR 72701
Terry L. Lavy
Affiliation:
Dep. Agron., Univ. Arkansas, Fayetteville, AR 72701
Edward E. Gbur
Affiliation:
Agric. Statistics Lab., Univ. Arkansas, Fayetteville, AR 72701
Get access Rights & Permissions [Opens in a new window]

Abstract

Laboratory studies were conducted to determine the relative sorption, mobility, and degradation rates of triclopyr and 2,4-D on two surface soils and two subsoils from the rice-producing areas of Arkansas. Triclopyr sorption was slightly greater than 2,4-D sorption. However, mobility of the herbicides on a given soil did not differ. Sorption of both herbicides was greatest and mobility lowest on a subsoil with the lowest pH. Triclopyr degradation rates were lower than 2,4-D degradation rates in a dark incubator. The average half life was 138 d for triclopyr and 21 d for 2,4-D. High soil moisture content (0 versus 100 kPa water tension) increased the rate of 2,4-D degradation. Triclopyr degraded more rapidly at 30 C than at 15 C. The dissipation rates of both herbicides were lowest on the soil on which sorption was greatest.

Keywords

2,4-D, (2,4-dichlorophenoxy)acetic acidtriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acidLeachingsoil moisturetemperature
Type
Soil, Air, and Water
Information
Weed Science , Volume 43 , Issue 4 , December 1995 , pp. 678 - 684
Copyright
Copyright © 1995 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. Crosby, D. G. and Tutgrass, H. O. 1966. Photodecomposition of 2,4-dichlorophenoxyacetic acid. J. Agric. Food Chem 14:596–599.Google Scholar
2. Dao, T. H., Marx, D. B., Lavy, T. L., and Dragun, J. 1982. Effect, and statistical evaluation, of soil sterilization on aniline and diuron adsorption isotherms. Soil Sci. Soc. Am. J. 46:963–969.Google Scholar
3. Fontaine, D. D., Lehman, R. G., and Miller, R. J. 1991. Soil adsorption of neutral and anionic forms of sulfonamide herbicide flumetsulam. J. Environ. Qual. 20:759–762.Google Scholar
4. Goodrich, J. A., Lykins, B. J. Jr., and Clark, R. M. 1991. Drinking water from agriculturally contaminated groundwater. J. Environ. Qual. 20:707–717.Google Scholar
5. Hillel, D. 1982. Introduction to Soil Physics. Pages 1–16. Academic Press, Orlando, FL.Google Scholar
6. Jotcham, J. R., Smith, D. W., and Stephenson, G. R. 1989. Comparative persistence and mobility of pyridine and phenoxy herbicides in soil. Weed Technol. 3:155–161.Google Scholar
7. Lee, C. H., Oloffs, P. C., and Szeto, S. Y. 1986. Persistence, degradation, and movement of triclopyr and its ethylene glycol butyl ether ester in a forest soil. J. Agric. Food Chem. 34:1075–1079.CrossRefGoogle Scholar
8. Call, P. J. and Gavit, P. D. 1986. Aqueous photolysis of triclopyr and its butoxyethyl ester and calculated environmental photodecomposition rates. Environ. Toxic. Chem. 5:879–885.Google Scholar
9. Johnson, W. G., Lavy, T. L., and Gbur, E. E. 1995. Persistence of triclopyr and 2,4-D in flooded and non-flooded soils. J. Environ. Qual. 24:(In press).Google Scholar
10. Lavy, T. L. 1975. Effects of soil pH and moisture on the direct radioassay of herbicides in soil. Weed Sci. 21:49–52.Google Scholar
11. Montgomery, D. C. 1984 Analysis of covariance. Pages 475–495 in Design and Analysis of Experiments. 2nd ed. John Wiley & Sons, Inc., New York, NY.Google Scholar
12. Montgomery, D. C. and Peck, E. A. 1992. Introduction to Linear Regression Analysis. 2nd ed. John Wiley & Sons, Inc., New York, NY. 527 pp.Google Scholar
13. McKellar, R. L. 1977. Determination of triclopyr, 3,5,6-trichloro-2-pyridinol and 2-methoxy-3,5,6-trichloropyridine in soil by gas chromatography. ACR 77.5. DowElanco, Midland, MI 48640. 23 pp.Google Scholar
14. Newton, M., Roberts, F, Allen, A., Kelpass, B., White, D., and Boyd, P. 1990. Deposition and dissipation of three herbicides in foliage, litter and soil of brushfields of southwest Oregon. J. Agric. Food Chem. 38:574–583.Google Scholar
15. Norris, L. A., Montgomery, M. L., and Warren, L. E. 1987. Triclopyr persistence in western Oregon hill pastures. Bull. Environ. Contam. Toxicol. 39:134–141.Google Scholar
16. Parker, L. W. and Doxtader, K. G. 1982. Kinetics of microbial decomposition of 2,4-D in soil: Effects of herbicide concentration. J. Environ. Qual. 11:679–684.Google Scholar
17. SAS Institute. 1985. SAS User's Guide: Statistics, Version 5, SAS Inst., Cary, NC. pp 261–268.Google Scholar
18. Shaler, T. A. and Klecka, G. M. 1986. Effects of oxygen concentration on biodegradation of 2,4-dichlorophenoxyacetic acid. Appl. Environ. Microbiol. 51:950–955.Google Scholar
19. Smith, A. E., Aubin, A. J., and Biederbeck, V. O. 1989. Effects of long-term 2,4-D and MCPA field applications on soil residues and their rates of breakdown. J. Environ. Qual. 18:299–302.Google Scholar
20. Solomon, K. R., Bowley, C. S., Liber, K., and Stephenson, G. R. 1988. Persistence of hexazinone (Velpar), triclopyr (Garlon), and 2,4-D in a northern Ontario aquatic environment. J. Agric. Food Chem. 36:1314–1318.CrossRefGoogle Scholar
21. Stephenson, G. R., Solomon, K. R., Bowhey, C. S., and Liber, K. 1990. Persistence, leachability, and lateral movement of triclopyr (Garlon) in selected Canadian forest soils. J. Agric. Food Chem. 38:584–588.Google Scholar
22. Wauchope, R. D. 1978 The pesticide content of surface waters draining from agricultural fields: A review. J. Environ. Qual. 7:459–472.Google Scholar
23. Wauchope, R. D., Buttler, T. M., Hornsby, A. G., Augustijn-Beckers, P.W.M., and Burt, J. P. 1992. The SCS/ARS/CES pesticide properties database for environmental decision making. Rev. Environ. Contam. Toxicol. 123:1–25.Google Scholar
24. Weber, J. B., Swain, L. R., Streck, H. J., and Sartori, J. L. 1986. Herbicide mobility in soil leaching columns Pages 189–200 in Camper, N. D., ed. Research Methods in Weed Science, 3rd ed. South. Weed Sci. Soc. Google Scholar