Hostname: page-component-8448b6f56d-xtgtn Total loading time: 0 Render date: 2024-04-23T19:37:17.318Z Has data issue: false hasContentIssue false
  • English
  • Français

Butylate Persistence and Activity in Soils Previously Treated with Thiocarbamates

Published online by Cambridge University Press:  12 June 2017

Gary L. Tuxhorn ,
Fred W. Roeth ,
Alex R. Martin  and
Robert G. Wilson
Gary L. Tuxhorn
Affiliation:
Dep. Agron., Univ. Nebraska, Clay Center 68933
Fred W. Roeth
Affiliation:
Dep. Agron., Univ. Nebraska, Lincoln 68583
Alex R. Martin
Affiliation:
Dep. Agron., Univ. Nebraska, Lincoln 68583
Robert G. Wilson
Affiliation:
Dep. Agron., Univ. Nebraska, Scottsbluff, NE 69361
Get access Rights & Permissions [Opens in a new window]

Abstract

Butylate [S-ethyl bis(2-methylpropyl)carbamothioate] persistence was compared in three soils that were treated annually with four thiocarbamate herbicides in 1981 and 1982. Butylate degraded faster in soils treated two consecutive years with butylate + dichlormid (2,2-dichloro-N,N-di-2-prophenylacetamide) than in soils treated for 2 yr with EPTC (S-ethyl dipropyl carbamothioate) + dichlormid, cycloate (S-ethyl cyclohexylethylcarbamothioate), vernolate (S-propyl dipropylcarbamothioate) + dichlormid, or from previously untreated soils. Butylate + dichlormid applications in 1981 and 1982 enhanced butylate degradation in 1983 at all locations and reduced weed control at two locations. Previously untreated soil or soil previously treated with two annual applications of butylate + dichlormid was treated with 6 ppmw butylate, incubated for 14 days, analyzed for residual butylate, and bioassayed for herbicide activity. Bioassay indicated higher herbicidal activity than was predicted by the residual butylate concentration. A herbicidally active metabolite may be produced during the soil degradation of butylate.

Keywords

Herbicide enhancementaccelerated degradationmetaboliteweed controlEPTC
Type
Soil, Air, and Water
Information
Weed Science , Volume 34 , Issue 6 , November 1986 , pp. 961 - 965
Copyright
Copyright © 1986 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Casida, J. E., Gray, R. A., and Tilles, H. 1974. Thiocarbamate sulfoxides, potent selective, and biodegradable herbicides. Science. 184:573–574.CrossRefGoogle ScholarPubMed
2. Kaufman, D. D., Katan, Y., Edwards, D. F., and Jordan, E. G. 1985. Microbial adaptation and metabolism of pesticides. Pages 437–451 in Hilton, J. L., ed. Agricultural Chemicals of the Future. BARC Symp. in Agric. Res. No. 8. Rowan & Alanheld Publishers, Totowa, NJ.Google Scholar
3. Obrigawitch, T., Martin, A. R., and Roeth, F. W. 1983. Degradation of thiocarbamate herbicides in soils exhibiting rapid EPTC breakdown. Weed Sci. 31:187–192.CrossRefGoogle Scholar
4. Obrigawitch, T., Roeth, F. W., Martin, A. R., and Wilson, R. G. Jr. 1982. Addition of R-33865 to EPTC for extended herbicidal activity. Weed Sci. 30:422–427.CrossRefGoogle Scholar
5. Obrigawitch, T., Wilson, R. G., Martin, A. R., and Roeth, F. W. 1982. The influence of temperature, moisture, and prior EPTC application on the degradation of EPTC in soils. Weed Sci. 30: 175–181.CrossRefGoogle Scholar
6. Rahman, A. and James, T. K. 1983. Decreased activity of EPTC + R-25788 following repeated use in some New Zealand soils. Weed Sci. 31:783–789.CrossRefGoogle Scholar