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Weed Control by Alachlor and Residues in Sweet Potato (Ipomoea batatas) and Soil

  • Nancy D. Herman (a1), Thomas J. Monaco (a1) and T. Jack Sheets (a1)


Alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide] at 3.4 and 6.7 kg/ha controlled weeds present in sweet potatoes (Ipomoea batatas L. ‘Jewel’, ‘Centennial’, ‘Caromex’) at two locations in North Carolina. Yield was not reduced from slight early season injury observed with the herbicide treatments. Most sweet potato root samples contained less than the detectable limit of 0.05 ppmw of alachlor. At one location, samples of the cultivars Jewel and Centennial that received 6.7 kg/ha contained 0.06 and 0.05 ppmw, respectively. Averaged over locations, residue levels in soil samples from plots treated at 6.7 kg/ha decreased from 1.55 ppmw initially to less than 0.05 ppmw by 16 weeks after application.



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1. Beestman, G. B., and Deming, J. M. 1974. Dissipation of acetanilide herbicides from soils. Agron. J. 66:308311.
2. Chahal, D. S., Bans, I. S., and Chopra, S. L. 1976. Degradation of alachlor [2-chloro-N-(methoxymethyl)-2′,6′-diethylacetanilide] by soil fungi. Plant and Soil 45:689692.
3. Conkin, R. A. 1978. Alachlor. Pages 255265 in Zweig, G. and Sherma, J., eds., Analytical Methods of Pesticides and Plant Growth Regulators. Vol. X, New and Updated Methods. Academic Press, New York.
4. Hargrove, R. S., and Merkle, M. G. 1971. The loss of alachlor from soil. Weed Sci. 19:652654.
5. Hernandez, T. P., Thibodeaux, S. D., and Constantin, R. 1977. Weed control in sweet potatoes and subsequent evaluation for effect on quality. HortScience 12:236.
6. Hunt, T. W., Monaco, T. J., and Sheets, T. J. 1980. Residue and efficacy studies of alachlor on cabbage and soil. J. Amer. Soc. Hort. Sci. 105:929932.
7. Skroch, W. A., and Monaco, T. J. 1981. Chemical weed control in vegetable crops. Pages 389399 in North Carolina Agric. Chem. Manual. School of Agric. and Life Sci., North Carolina State Univ., Raleigh.
8. Smith, A. E., and Phillips, D. V. 1975. Degradation of alachlor by Rhizoctonia solani . Agron. J. 67:347349.
9. Tiedje, J. M., and Hagedorn, M. L. 1975. Degradation of alachlor by a soil fungus, Chaetomium globosum . J. Agric. Food Chem. 23:7781.
10. U.S. Department of Health, Education, Food and Drug Administration. 1969. Pesticide Analytical Manual, Vol. 11, Methods for Individual Pesticide Residues, Section 120.249. U.S. Government Printing Office, Washington, DC.
11. U.S. Government Printing Office. 1981. Code of Federal Regulations. Tolerances and exemptions from tolerances for pesticide chemicals in or on raw agricultural commodities. Title 40, Part 180.249. Washington, DC.
12. Weed Science Society of America. 1979. Alachlor. Pages 810 in Herbicide Handbook, fourth edition. Weed Sci. Soc. Amer., Champaign, IL.
13. Zimdahl, R. L., and Clark, S. K. 1982. Degradation of three acetanilide herbicides in soil. Weed Sci. 30:545548.


Weed Control by Alachlor and Residues in Sweet Potato (Ipomoea batatas) and Soil

  • Nancy D. Herman (a1), Thomas J. Monaco (a1) and T. Jack Sheets (a1)


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