Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-02T20:50:52.678Z Has data issue: false hasContentIssue false
  • English
  • Français

Washoff of Dicamba and 3,6-Dichlorosalicylic Acid from Turfgrass Foliage

Published online by Cambridge University Press:  12 June 2017

Mark J. Carroll ,
Robert L. Hill ,
Emy Pfeil  and
Albert E. Herner
Mark J. Carroll
Affiliation:
Dep. Agron., Univ. MD, College Park, MD 20742
Robert L. Hill
Affiliation:
Dep. Agron., Univ. MD, College Park, MD 20742
Emy Pfeil
Affiliation:
Environ, Chem. Lab. U.S. Dep. Agric. Res. Serv.: Natl. Res. Inst., Beltsville, MD 20705
Albert E. Herner
Affiliation:
Environ, Chem. Lab. U.S. Dep. Agric. Res. Serv.: Natl. Res. Inst., Beltsville, MD 20705
Get access Rights & Permissions [Opens in a new window]

Abstract

The functional relationships between rainfall intensities and amounts, and the washoff of dicamba and 3,6-DCSA from turfgrass foliage were determined. Dicamba was applied to Kentucky bluegrass field plots and the turfgrass was subjected to 2 to 58 mm of simulated rainfall 18 to 48 h later. Rainfall was applied at an average intensity of 20.6 or 39.9 mm h−1. The 39.9 mm h−1 intensity reduced dicamba washoff by 10% for a given amount of rainfall. Washoff of 3,6-DCSA was independent of rainfall intensity. When averaged over intensities, washoff of dicamba was best described by the equation y = 1 − 0.341x0.187, and 3,6-DCSA washoff by the equation y = exp(-0.210x), where x represents millimeters of rainfall and y, the proportion of compound remaining on the foliage after rainfall.

Keywords

Dicamba, 3,6-dichloro-2-methoxybenzoic acid3,6-DCSA, 3,6-dichlorosalicylic acidKentucky bluegrass, Poa pratensis L.Modeling
Type
Research
Information
Weed Technology , Volume 7 , Issue 2 , June 1993 , pp. 437 - 442
Copyright
Copyright © 1993 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. Casely, J. C. 1989. Variations in foliar pesticide performance attributable to humidity, dew and rain effects. Aspects Applied Biol. 21:215–225.Google Scholar
2. Comfort, S. D., Inskeep, W. P., and Macur, R. E. 1992. Degradation and transport of dicamba in a clay soil. J. Environ. Qual. 21:653–657.Google Scholar
3. Lauren, D. R., Taylor, H. J., and Rahman, A. 1988. Analysis of the herbicides dicamba, chlorpyralid and bromacil in asparagus by high performance liquid chromatography. J. Chrom. 439:470–475.Google Scholar
4. Linscott, D. L. and Hagin, R. D. 1968. Effects of two environmental factors on removal of 2,4-DB from forage. Weed Sci. 16:114–116.Google Scholar
5. McDowell, L. L., Willis, G. H., Southwick, L. M., and Smith, S. 1987. Fenvalerate washoff from cotton plants by rainfall. Pestic. Sci. 21:83–92.CrossRefGoogle Scholar
6. Meyer, L. D. and Harmon, W. C. 1979. Multiple-intensity rainfall simulator for erosion research on row sideslopes. Trans. Am. Soc. Agric. Eng. 22:100–103.Google Scholar
7. Murray, M. R. and Hall, J. K. 1989. Sorption-desorption of dicamba and 3-6-dichlorosalicylic acid in soils. J. Environ. Qual. 18:51–57.Google Scholar
8. Schwab, G. O., Frevert, R. K., Edminster, T. W., and Barnes, K. K. 1966. Soil and Water Conservation Engineering. 2nd ed. John Wiley & Sons, Inc., New York, NY.Google Scholar
9. Smith, A. E. 1974. Breakdown of the herbicide dicamba in Regina heavy clay. J. Agric. Food Chem. 21:708–710.Google Scholar
10. Smith, C. N. and Carsel, R. F. 1984. Foliar washoff of pesticides (FWOP) model: development and evaluation. J. Environ. Sci. Health B19:323–342.Google Scholar
11. Willis, G. H., McDowell, L. L., Smith, S., and Southwick, L. M. 1986. Permethrin washoff from cotton plants by simulated rainfall. J. Environ. Qual. 15:116–120.Google Scholar
12. Willis, G. H., McDowell, L. L., Smith, S., and Southwick, L. M. 1988. Rainfall amount and intensity effects on carbaryl washoff from cotton plants. Trans. Am. Soc. Agric. Eng. 31:86–90.Google Scholar