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Alachlor and metolachlor transformation pattern in corn and soil

Published online by Cambridge University Press:  20 January 2017

Kassim Al-Khatib ,
Jolene Baumgartner Unland ,
Brian L. S. Olson  and
David W. Graham
Jolene Baumgartner Unland
Affiliation:
Dow AgroSciences LLC, 9330 Zionsville Road, Indianapolis, IN 46268
Brian L. S. Olson
Affiliation:
NW Area Extension Office, Kansas State University, Colby, KS 67701-0786
David W. Graham
Affiliation:
Department of Civil and Environmental Engineering, University of Kansas, Lawrence, KS 66045
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Abstract

Experiments were conducted in a growth chamber to study alachlor and metolachlor metabolism in soil and corn and to determine if alachlor and metolachlor and their metabolites are exuded from corn roots to the growth medium. Alachlor was more readily absorbed by corn than was metolachlor. The absorption of alachlor and metolachlor was 72 and 55%, respectively, 10 d after seedling emergence (DAE). Alachlor and metolachlor were rapidly metabolized in corn, although metabolism rates were higher with metolachlor than with alachlor. Ten similar alachlor metabolites were detected in roots and shoots. In addition, two metabolites were detected only in the shoots, and one metabolite was detected only in the roots. Metolachlor metabolism in corn produced fewer metabolites than did alachlor metabolism. At 5 DAE, 10 and 9 metabolites were detected in shoots and roots, respectively. The metabolism of alachlor and metolachlor in soil showed patterns similar to the metabolism in corn but produced fewer metabolites. One unique alachlor metabolite appeared in soil but not in corn. Roots of corn seedlings treated with 14C-alachlor or 14C-metolachlor released significant amounts of radioactivity to the surrounding growth medium 5 d after treatment. Plants treated with alachlor released more radioactivity than did plants treated with metolachlor.

Keywords

Alachlormetolachlorcorn, Zea mays ‘Patriot 6168’Absorptiontranslocationherbicide metabolismroot exudation
Type
Research Article
Information
Weed Science , Volume 50 , Issue 5 , October 2002 , pp. 581 - 586
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Aga, D. S., Thurman, E. M., and Pomes, M. L. 1996. Identification of new sulfonic acid metabolite of metolachlor in soil. Environ. Sci. Technol. 30:592–597.Google Scholar
Ahrens, W. H. ed. 1994. Herbicide Handbook. 7th ed. Champaign, IL: Weed Science Society of America. pp. 9–12, 197–200.Google Scholar
Armstrong, T. F., Meggitt, W. F., and Penner, D. 1973. Absorption, translocation, and metabolism of alachlor by yellow nutsedge. Weed Sci. 4:357–360.Google Scholar
Bouchard, D. C., Lavy, T. L., and Marx, D. B. 1982. Fate of metribuzin, metolachlor, and fluometuron in soil. Weed Sci. 30:629–632.Google Scholar
Braverman, M. P., Lavy, T. L., and Marx, D. B. 1986. The degradation and bioactivity of metolachlor in soil. Weed Sci. 34:479–484.Google Scholar
Breaux, E. J., Patanella, J. E., and Sanders, E. F. 1987. Chloroacetanilide herbicide selectivity: analysis of glutathione and homoglutathione in tolerant, susceptible, and safened seedlings. J. Agric. Food Chem. 35:474–478.Google Scholar
Chesters, G., Simsiman, G. V., Lavy, J., Alhajjar, B. J., Rathulla, R. N., and Harkin, J. M. 1989. Environmental fate of alachlor and metolachlor. Rev. Environ. Contam. Toxicol. 110:1–74.Google Scholar
Cottingham, C. K. and Hatzios, K. K. 1992. Basis of differential tolerance of two corn hybrids (Zea mays) to metolachlor. Weed Sci. 40:359–363.CrossRefGoogle Scholar
Dixon, G. A. and Stoller, E. W. 1982. Differential toxicity, absorption, translocation, and metabolism in corn (Zea mays) and yellow nutsedge (Cyperus esculentus). Weed Sci. 30:225–230.Google Scholar
Field, J. A. and Thurman, E. M. 1996. Glutathione conjugation and contaminant transformation. Environ. Sci. Technol. 30:1413–1418.CrossRefGoogle Scholar
Fuerst, E. P. 1987. Understanding the mode of action of the chloroacetamide and thiocarbamate herbicides. Weed Technol. 1:270–277.Google Scholar
Graham, D. W., Miley, K., deNoyelles, F., Smith, V. H., Thurman, M., and Carter, R. 2000. Alachlor transformation patterns in aquatic field microcosms under variable oxygen and nutrient conditions. Water Res. 34:4054–4062.Google Scholar
Graham, W. J., Graham, D. W., deNoyelles, F., Smith, V. H., Larive, C. K., and Thurman, E. M. 1999. Metolachlor and alachlor breakdown product formation patterns in aquatic field microcosms. Environ. Sci. Technol. 33:4471–4476.Google Scholar
Hickman, M. V., Messersmith, C. G., and Lym, R. G. 1989. Picloram release from leafy spurge (Euphorbia esula) roots in field. Weed Sci. 37:167–174.Google Scholar
Hoagland, D. R. and Arnon, D. I. 1950. The Water-Culture Method for Growing Plants Without Soil. Berkeley, CA: California Agricultural Experimental Station, Circ. 347.Google Scholar
Holden, L. R., Graham, J. A., Whitmore, R. W., Alexander, W. J., Pratt, R. W., Liddle, S. K., and Piper, L. L. 1992. Results of the national alachlor well water survey. Environ. Sci. Technol. 26:935–943.Google Scholar
Hurt, W. and Foy, C. L. 1965. Some factors affecting the excretion of foliarly applied dicamba and picloram from roots of black valentine beans. Plant Physiol. (Suppl.) 40:48.Google Scholar
Kolpin, D. W., Thurman, E. M., and Goolsby, D. A. 1996. Occurrence of selected pesticides and their metabolites in near-surface aquifers of the midwestern U.S. Environ. Sci. Technol. 30:335–340.Google Scholar
Lamoureux, G. L. and Rusness, D. G. 1983. Malonylcysteine conjugates as end-products of glutathione metabolism in plants. Pages 295–300 In Miyamoto, J. and Kearney, P. C., eds. Pesticide Chemistry: Human Welfare and the Environment. New York: Pergamon Press.Google Scholar
LeBaron, H. M. and McFarland, J. E. 1988. Metolachlor. Pages 335–382 In Kearney, P. C. and Kaufman, D. D., eds. Herbicides Chemistry, Degradation, and Mode of Action. Volume 3. New York: Marcel Dekker.Google Scholar
Linder, P. J., Mitchell, J. W., and Freeman, G. D. 1964. Persistence and translocation of exogenous regulating compounds that exude from roots. J. Agric. Food Chem. 12:437–438.Google Scholar
Lingle, S. E. and Suttle, J. C. 1985. A model system for the study of 2,4-D translocation in leafy spurge. Can. J. Plant Sci. 65:369–377.Google Scholar
Marrs, K. A. 1996. The functions and regulation of glutathione S-transferases in plants. Annu. Rev. Plant Physiol. 47:127–158.Google Scholar
National Agricultural Statistics Service. 1999. Agricultural Chemical Usage, 1998 Field Crops Summary. Washington, D.C.: U.S. Department of Agriculture, p. 140.Google Scholar
Neidermyer, R. W. and Nalewaja, J. D. 1969. Uptake, translocation and fate of 2,4-D in nightflowering catchfly and common lambsquarters. Weed Sci. 17:528–532.Google Scholar
Novick, N. J., Mukherjee, R., and Alexander, M. 1986. Metabolism of alachlor and propachlor in suspensions of pretreated soils and in samples from ground water aquifers. J. Agric. Food Chem. 34:721–725.CrossRefGoogle Scholar
Obrigawitch, T., Abernathy, J. R., and Gipson, J. R. 1980. Response of yellow (Cyperus esculentus) and purple (Cyprus rotundus) nutsedge to metolachlor. Weed Sci. 28:708–715.Google Scholar
Olson, B. L., Al-Khatib, K., Stahlman, P., and Isakson, P. J. 2000. Efficacy and metabolism of MON 37500 in Triticum aestivum and weedy grass species as affected by temperature and soil moisture. Weed Sci. 48:541–548.Google Scholar
Pothuluri, J. V., Moorman, T. B., Obenhuber, D. C., and Wauchope, R. D. 1990. Aerobic and anaerobic degradation of alachlor in samples from a surface-to-groundwater profile. J. Environ. Qual. 19:525–530.CrossRefGoogle Scholar
Reid, C.P.P. and Hurt, W. 1970. Root exudation of herbicides by woody plants: allelopathic implications. Nature 225:291.Google Scholar
Rubin, B., Kirino, O., and Casida, J. E. 1985. Chemistry and action of N-phenylmaleamic acids and their progenitors as selective herbicide antidotes. J. Agric. Food Chem. 33:489–494.Google Scholar
Sharma, M. P., Chang, F. Y., and Vanden Born, W. H. 1971. Penetration and translocation of picloram in Canada thistle. Weed Sci. 19:349–355.Google Scholar
Sharp, D. B. 1988. Alachlor. Pages 301–333 In Kearney, P. C. and Kaufman, D. D., eds. Herbicides Chemistry, Degradation, and Mode of Action, Volume 3. New York: Marcel Dekker.Google Scholar
Thurman, E. M., Goolsby, D. A., Aga, D. S., Pomes, M. L., and Meyer, M. T. 1996. Occurrence of alachlor and its sulfonated metabolite in rivers and reservoirs in the midwestern United States: the importance of sulfonation in the transport of the chloroacetinilide herbicides. Environ. Sci. Technol. 30:569–574.Google Scholar
Vuilleumier, S. 1997. Bacterial glutathione S-transferase: what are they good for? J. Bacteriol. 179:1431–1441.Google Scholar
Walker, A., Moon, A. H., and Welch, S. J. 1992. Influence of temperature, soil moisture and soil characteristics on the persistence of alachlor. Pestic. Sci. 35:109–116.Google Scholar
Weed, D. A., Kanwar, R. S., and Salvador, R. J. 1999. A simple model of alachlor dissipation. J. Environ. Qual. 28:1406–1412.Google Scholar
Zimdahl, R. L. and Clark, S. K. 1982. Degradation of three acetanilide herbicides in soil. Weed Sci. 30:545–548.Google Scholar