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The Metabolism of Atrazine, Chloramben, and Dicamba in Earthworms (Lumbricus terrestris) from Treated and Untreated Plots

Published online by Cambridge University Press:  12 June 2017

Hang Chio  and
J. R. Sanborn
Hang Chio
Affiliation:
Illinois Natural History Survey, Illinois Agric. Exp. Stn., and the Univ. of Illinois, Urbana, Il 61801
J. R. Sanborn
Affiliation:
Illinois Natural History Survey, Illinois Agric. Exp. Stn., and the Univ. of Illinois, Urbana, Il 61801
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Abstract

The metabolism of three 14C-ring-labeled herbicides, atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine], chloramben (3-amino-2,5-dichlorobenzoic acid), and dicamba (3,6-dichloro-o-anisic acid) was studied in the earthworm, Lumbricus terrestris L., taken from plots treated with these herbicides for the past 10 yr and from control plots treated with no herbicides. For the two benzoic acid herbicides, acetone extracts of sand and earthworms from untreated plots contained more unmetabolized herbicide than similar extracts of sand and earthworms from treated plots, indicating a net enhancement of metabolism in worms from treated plots. For atrazine, the amount of unchanged herbicide in the acetone extracts of earthworm and sand were nearly equivalent. Finally, the relative metabolic stability of the three herbicides in decreasing order in earthworms from both control and untreated plots was chloramben>atrazine>dicamba.

Type
Research Article
Information
Weed Science , Volume 26 , Issue 4 , July 1978 , pp. 331 - 335
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

Literature Cited

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