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Adsorption of Selective Grass Herbicides by Soils and Sediments

Published online by Cambridge University Press:  12 June 2017

Susan K. Rick ,
Fred W. Slife  and
Wayne L. Banwart
Susan K. Rick
Affiliation:
Dep. Agron., Univ. Illinois, Urbana, IL 61801
Fred W. Slife
Affiliation:
Dep. Agron., Univ. Illinois, Urbana, IL 61801
Wayne L. Banwart
Affiliation:
Dep. Agron., Univ. Illinois, Urbana, IL 61801
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Abstract

Soil factors that may affect activity of the propynyl ester of CGA-82725 {2-[(3,5-dichloro-2-pyridinyl) oxy] phenoxy] propanic acid}, methyl ester of haloxyfop {2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl] oxy] phenoxy] propanoic acid}, and butyl ester of fluazifop {(±)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl] oxy] phenoxy] propanoic acid} were examined. Adsorption of the three herbicides on three Illinois soils was similar but very low. Linear partion coefficients (Kd) ranged from 0 to 1.75 for CGA-82725 and haloxyfop, while no adsorption was detected for fluazifop on Drummer silty clay loam, Cisne silt loam, or Bloomfield sand. Conversion to the parent acid (active form) following application to the soil was rapid. The acid form was predominant for 2 months. Two metabolites were recovered; one was common to all three herbicides and intermediate in polarity to the acid and ester forms, and the other, unique to CGA-82725, was slightly more polar than the acid form. Extractability of the herbicides decreased dramatically over time. Haloxyfop and CGA-82725 leached to similar depths in soil column studies. Fluazifop tended to move more readily in the silty clay loam but less rapidly in the sand. Adsorption studies with 15 additional soil or sediment samples with widely varying physiochemical properties yielded adsorption (Kd) values of 0.79, 1.09, and 1.15 for fluazifop, haloxyfop, and CGA-82725, respectively, when averaged over all samples studied. Adsorption did not appear to be significantly influenced by organic carbon content, clay content, or pH.

Keywords

CGA-82725haloxyfopfluazifopsoil activityadsorptiondegradationmobilityextraction
Type
Soil, Air, and Water
Information
Weed Science , Volume 35 , Issue 2 , March 1987 , pp. 282 - 288
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

Literature Cited

1. Abernathy, J. R., Bean, B., and Gipson, J. R. 1983. Soil and foliar activity of selective grass herbicides. Abstr. Weed Sci. Soc. Am. Page 31.Google Scholar
2. Bean, B. W., Abernathy, J. R., and Gipson, J. R. 1983. Foliar and edaphic studies with selective grass herbicides. Proc. South. Weed Sci. Soc. 36:152.Google Scholar
3. Buhler, D. D. and Burnside, O. C. 1983. Soil activity of fluazifop, sethoxydim, and Dowco 453 {methyl 2-[4-((3-chloro-5′-(trifluoromethyl)-2-pyridinyl)oxy)phenoxy]propanoate}. Abstr. Weed Sci. Soc. Am. Page 29.Google Scholar
4. Colby, S. R., Bone, J. R., and Akhavein, A. A. 1982. PP009, a selective herbicide for control of perennial and annual grasses. Abstr. Weed Sci. Soc. Am. Page 14.Google Scholar
5. Hammond, L. E., Handly, J. V., Swann, R. L., and Hanson, C. L. 1982. Soil residual activity of Dowco 453 herbicide. Proc. North Cent. Weed Control Conf. 37:76.Google Scholar
6. Handly, J., Gerwick, C., and Vatne, R. 1983. Preemergence potential for haloxyfop-methyl in soybean production. Proc. North Cent. Weed Control Conf. 38:10.Google Scholar
7. Hassett, J. J., Banwart, W. L., Wood, S. G., and Means, J. G. 1981. Sorption of α-napthol: Implications concerning the limits of hydrophobic sorption. Soil Sci. Soc. Am. J. 45:38–42.Google Scholar
8. Hill, E. R. and Peek, J. W. 1982. CGA-82725 – A new grass herbicide for broadleaf crops. Abstr. Weed Sci. Soc. Am. Page 16.Google Scholar
9. Karickhoff, S. W., Brown, D. S., and Scott, T. A. 1979. Sorption of hydrophobic pollutants on natural sediments. Water Res. 13:241–248.CrossRefGoogle Scholar
10. McAvoy, W. J. 1982. Today's herbicide: Poast. Weeds Today. 13(2):7–8.Google Scholar
11. Porter, D. J. and Harvey, R. G. 1983. Wild proso millet (Panicum miltaceum L.) control in soybeans with postemergence herbicides. Abstr. Weed Sci. Soc. Am. Page 8.Google Scholar
12. Ready, E. L., Bates, J. J., and Ekeh, M. K. 1981. Fluazifop (PP009): A new selective herbicide for control of perennial and annual grasses. Proc. North Cent. Weed Control Conf. 36:112.Google Scholar
13. Theisen, A. and Harward, M. E. 1962. A paste method for preparation of slides for clay mineral identification by x-ray diffraction. Soil Sci. Soc. Am. Proc. 26:90–91.CrossRefGoogle Scholar
14. Threewitt, T. B., Taylor, T. D., Judy, M. L., Kern, C. L., and Stahlberg, L. A. 1981. CGA-82725 – A new postemergence grass herbicide for soybeans. Proc. North Cent. Weed Control Conf. 36:113.Google Scholar
15. Velovitch, J. J. 1982. New postemergence herbicides for controlling grass weeds in soybeans. Weeds Today 13(2):12–18.Google Scholar
16. Weber, J. B. and Whitacre, D. M. 1982. Mobility of herbicides in soil columns under saturated- and unsaturated-flow conditions. Weed Sci. 30:579–584.Google Scholar