Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-26T08:07:39.944Z Has data issue: false hasContentIssue false

Leaching of Oxyfluorfen in Container Media

Published online by Cambridge University Press:  12 June 2017

Menashe Horowitz
Affiliation:
Dep. Ornamental Hortic., Agric. Res. Orgn., Bet Dagan, Israel
Clyde L. Elmore
Affiliation:
Dep. Bot., Univ. Calif., Davis, CA 95616

Abstract

Bentgrass was used to bioassay oxyfluorfen in leaching experiments done in columns of soilless potting media and soils, with herbicide incorporated into the upper 2 to 4 cm. Depth of herbicide leaching increased in order in the following soils: peat and sand (1:1) mix, Stockton clay soil, Yolo fine sandy loam soil, and redwood bark and sand (3:1) mix. Depth of leaching was not related to soil organic matter content. Equilibration experiments showed that peat adsorbed 4 to 5 times more oxyfluorfen than redwood bark. Less leaching was observed in potting mixtures containing peat than bark. Raising the oxyfluorfen dose from 20 to 200 ppmw increased the depth of leaching and concentration of herbicide in the leachate, while a 10-fold increase in water volume had only a limited effect. Twenty ppmw of oxyfluorfen incorporated in the top of a peat-containing potting medium has a low risk of leaching out of the container.

Type
Research
Copyright
Copyright © 1990 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. Elmore, C. L. 1985. Ornamentals and Turf. p. 415426 in Principles of Weed Control in California. Thompson Publ., Fresno, CA.Google Scholar
2. Fadayomi, O., and Warren, G. F. 1977. Adsorption, desorption and leaching of nitrogen and oxyfluorfen. Weed Sci. 25:97100.Google Scholar
3. Hance, R. J. 1965. The adsorption of urea and some of its derivatives by a variety of soils. Weed Res. 5:98107.CrossRefGoogle Scholar
4. Harris, C. I., and Sheets, T. J. 1965. Influence of soil properties on adsorption and phytotoxicity of CIPC, diuron and simazine. Weeds 13:215219.CrossRefGoogle Scholar
5. Helling, C. 1971. Pesticide mobility in soils, III. Influence of soil properties. Soil Sci. Soc. Am. Proc. 35:743748.CrossRefGoogle Scholar
6. Hesse, P. R. 1972. Carbon and organic matter. p. 204254 in A Textbook of Soil Chemical Analysis. Chemical Publ. Co., New York.Google Scholar
7. Horowitz, M., Elmore, C. L., and Boquist, D. 1989. Directed application of (Goal) oxyfluorfen to container-grown euonymus, to minimize phytotoxicity and leaching. J. Environ. Hortic. 7:1721.Google Scholar
8. Lambert, S. M., Porter, P. E., and Schiefferstein, R. H. 1965. Movement and sorption of chemicals applied to the soil. Weeds 13:185190.CrossRefGoogle Scholar
9. Moles, A., and Whitcomb, C. E. 1976. Movement of Ronstar in containers as influenced by growing media. South. Nurserymen Assoc. Res. Conf., Annu. Rep. 21:137.Google Scholar
10. Neel, P. L. 1972. Weed control in containers with herbicide-impregnated mulch materials. Proc. Fl. State Hortic. Soc. 85:409413.Google Scholar
11. Peter, C. J., and Weber, J. B. 1985. Adsorption and efficacy of trifluralin and butralin as influenced by soil properties. Weed Sci. 33:861867.Google Scholar
12. Rahman, A., and Matthews, L. J. 1979. Effect of soil organic matter on the phytotoxicity of thirteen s-triazine herbicides. Weed Sci. 27:158161.Google Scholar
13. Skimina, C. A. 1984. Phytotoxicity and efficacy of oxyfluorfen in container crop production. Proc. 36th Annu. Calif. Weed Conf. 36:145151.Google Scholar
14. Smith, E. M. 1988. Chemical weed control in commercial nursery and landscape plantings. Ohio Coop. Ext. Serv., Publ. MM-297.Google Scholar
15. Weber, J. B. 1987. Physical/chemical interactions of herbicides with soil. Proc. 39th Annu. Calif. Weed Conf. 21:96109.Google Scholar
16. Weber, J. B., and Whitacre, D. M. 1982. Mobility of herbicides in soil columns under saturated and unsaturated conditions. Weed Sci. 30:579584.CrossRefGoogle Scholar
17. Whitcomb, C. E. 1984. Plant Production in Containers. Lacebark Publ., Stillwater, OK.Google Scholar
18. Whitcomb, C. E., and Boyer, C. 1980. Activity of Ronstar (oxadiazon) in containers as affected by the growth media. Nursery Res. J. 6:1418.Google Scholar
19. Williams, D. B., and Sanders, J. 1984. The origin and dissemination of weed seeds in container-grown nursery stock. South. Nurserymen Assoc. Res. Conf., Annu. Rep. 29:244251.Google Scholar