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Effect of Alfalfa (Medicago sativa) Roots on Movement of Atrazine and Alachlor Through Soil

Published online by Cambridge University Press:  12 June 2017

Amy B. Zins ,
Donald L. Wyse  and
William C. Koskinen
Amy B. Zins
Affiliation:
Dep. Agron. and Plant Genetics, Univ. Minnesota, St. Paul, MN 55108
Donald L. Wyse
Affiliation:
Dep. Agron. and Plant Genetics, Univ. Minnesota, St. Paul, MN 55108
William C. Koskinen
Affiliation:
Agric. Res. Serv., U. S. Dep. Agric., St. Paul, MN 55108
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Abstract

A column leaching study was conducted in a greenhouse to determine the movement of atrazine and alachlor through soil as affected by alfalfa roots in three stages of decay. Alfalfa was grown in soil columns for 6 months and then killed with glyphosate. The 14C-atrazine and 14C-alachlor were applied to soil columns with bromide following 2, 13, or 26 weeks of root decomposition. Most of the herbicide remained in the top 9 cm of soil. However, atrazine and alachlor soil distribution profiles indicated greater preferential movement in columns with roots than in columns without roots. Higher levels of atrazine and alachlor were bound to soil at lower depths in the presence of roots than without roots. Adsorption of atrazine and alachlor on soil with and without alfalfa roots was not significantly different as determined by Freundlich adsorption isotherms. Degradation rates for atrazine and alachlor were not substantially different between soil with and without roots. Although only small amounts of the applied herbicide leached through the columns, preferential flow of herbicides through root-mediated soil macropores and cracks could be a mechanism of herbicide transport through soil under appropriate conditions.

Keywords

Alachlor 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetanilideatrazine 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamineglyphosate, N-(phosphonomethyl)glycinealfalfa, (Medicago sativa ‘Nitro’)Soil macroporessorptionleachingherbicide degradationgroundwater quality
Type
Soil, Air, and Water
Information
Weed Science , Volume 39 , Issue 2 , June 1991 , pp. 262 - 269
Copyright
Copyright © 1991 Weed Science Society of America 

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References

Literature Cited

1. Aubertin, G. M. 1971. Nature and extent of macropores in forest soils and their influence on surface water movement. USDA For. Serv. Res. Paper NE-192. 32.Google Scholar
2. Barley, K. P. 1954. Effects of root growth and decay on the permeability of synthetic sandy loam. Soil Sci. 78:205–210.Google Scholar
3. Baver, L. D., Gardner, W. H., and Gardner, W. R. 1972. Pages 154—177 in Soil Physics. 4th ed. John Wiley and Sons, New York.Google Scholar
4. Beven, K. and Germann, P. 1982. Macropores and water flow in soils. Water Resour. Res. 18:1311–1325.Google Scholar
5. Bowman, R. S. and Rice, R. C. 1986. Accelerated herbicide leaching resulting from preferential flow phenomena and its implications for groundwater contamination. In Proc. FOCUS Conference on Southwestern Groundwater Issues. Phoenix, AZ. Nat. Water Well Assoc., Dublin, OH.Google Scholar
6. Clay, S. A., Allmaras, R. R., Koskinen, W. C., and Wyse, D. L. 1988. Desorption of atrazine and cyanazine from soil. J. Environ. Qual. 17:719–723.CrossRefGoogle Scholar
7. Clay, S. A. and Koskinen, W. C. 1990. Characterization of alachlor and atrazine desorption from soil. Weed Sci. 38:74–80.Google Scholar
8. 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
9. Jury, W. A., Elabd, H., Clendening, L. D., and Resketo, M. 1986. Evaluation of pesticide transport screening models under field conditions. Pages 384—395 in Garner, W. Y., Honeycutt, R. C., and Nigg, H. N., eds. Evaluation of Pesticides in Groundwater (ACS Symposium Series; 315). American Chemical Society, Washington, DC.Google Scholar
10. Klaseus, T. G., Buzicky, G. C., and Schneider, E. C. 1988. Pesticides and groundwater: surveys of selected Minnesota Wells. Report to Legislative Commission on Minnesota Resources.Google Scholar
11. Koskinen, W. C. 1984. Methazole adsorption-desorption in soil. Weed Sci. 32:273–278.Google Scholar
12. Lavy, T. L. 1975. Effects of soil pH and moisture on the direct radioassay of herbicides in soil. Weed Sci. 23:49–52.Google Scholar
13. Lavy, T. L., Messersmith, C. G., and Knoche, H. W. 1972. Direct liquid scintillation radioassay of 14C-labeled herbicides in soil. Weed Sci. 20:215–219.Google Scholar
14. Quisenberry, V. L. and Phillips, R. E. 1976. Percolation of surface applied water in the field. Soil Sci. Soc. Am. J. 40:484–489.Google Scholar
15. Skipper, H. D., Gilmour, C. M., and Furtick, W. R. 1967. Microbial versus chemical degradation of atrazine in soils. Soil Sci. Soc. Am. Proc. 31:653–656.Google Scholar
16. Swanson, R. A. and Dutt, G. R. 1973. Chemical and physical processes that affect atrazine and distribution in soil systems. Soil Sci. Soc. Am. Proc. 37:872–876.Google Scholar
17. Tames, R. S. and Hance, R. J. 1969. The adsorption of herbicides by roots. Plant Soil 30:221–226.Google Scholar
18. Tippkotter, R. 1983. Morphology, spatial arrangement and origin of macropores in some hapludalfs, West Germany. Geoderma 29:355–371.CrossRefGoogle Scholar
19. Thomas, G. W. and Phillips, R. E. 1979. Consequences of water movement in macropores. J. Environ. Qual. 8:149–152.Google Scholar
20. Van de Pol, R. M., Wierenga, P. J., and Nielson, D. R. 1977. Solute movement in a field soil. Soil Sci. Soc. Am. J. 41:10–13.CrossRefGoogle Scholar
21. Wehtje, G., Mielke, L. N., Leavitt, J.R.C., and Schepers, J. S. 1984. Leaching of atrazine in the root zone of an alluvial soil in Nebraska. J. Environ. Qual. 13:507–513.Google Scholar
22. Wolf, D. C. and Marin, J. P. 1975. Microbial decomposition of ring-14C atrazine, cyanuric acid, and 2-chloro-4,6-diamino-s-triazine. J. Environ. Qual. 4:134–139.CrossRefGoogle Scholar