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

Published online by Cambridge University Press:  12 June 2017

Nancy D. Herman ,
Thomas J. Monaco  and
T. Jack Sheets
Nancy D. Herman
Affiliation:
Dep. Hortic. Sci., Pestic. Residue Res. Lab., North Carolina State Univ., Raleigh, NC 27650
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., Pestic. Residue Res. Lab., North Carolina State Univ., Raleigh, NC 27650
T. Jack Sheets
Affiliation:
Dep. Hortic. Sci., Pestic. Residue Res. Lab., North Carolina State Univ., Raleigh, NC 27650
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Abstract

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.

Keywords

Eleusine indica # ELEINPortulaca oleracea # POROLmethod of analysisdiphenamid
Type
Research Article
Information
Weed Science , Volume 31 , Issue 4 , July 1983 , pp. 567 - 571
Copyright
Copyright © 1983 Weed Science Society of America 

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References

Literature Cited

1. Beestman, G. B., and Deming, J. M. 1974. Dissipation of acetanilide herbicides from soils. Agron. J. 66:308–311.Google Scholar
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 45:689–692.Google Scholar
3. Conkin, R. A. 1978. Alachlor. Pages 255–265 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.Google Scholar
4. Hargrove, R. S., and Merkle, M. G. 1971. The loss of alachlor from soil. Weed Sci. 19:652–654.CrossRefGoogle Scholar
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.Google Scholar
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. 105:929–932.Google Scholar
7. Skroch, W. A., and Monaco, T. J. 1981. Chemical weed control in vegetable crops. Pages 389–399 in North Carolina Agric. Chem. Manual. School of Agric. and Life Sci., North Carolina State Univ., Raleigh.Google Scholar
8. Smith, A. E., and Phillips, D. V. 1975. Degradation of alachlor by Rhizoctonia solani . Agron. J. 67:347–349.Google Scholar
9. Tiedje, J. M., and Hagedorn, M. L. 1975. Degradation of alachlor by a soil fungus, Chaetomium globosum . J. Agric. Food Chem. 23:77–81.Google Scholar
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.Google Scholar
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.Google Scholar
12. Weed Science Society of America. 1979. Alachlor. Pages 8–10 in Herbicide Handbook, fourth edition. Weed Sci. Soc. Amer., Champaign, IL.Google Scholar
13. Zimdahl, R. L., and Clark, S. K. 1982. Degradation of three acetanilide herbicides in soil. Weed Sci. 30:545–548.Google Scholar