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Absorption, Accumulation, and Metabolism of Benefin, Diphenamid, and Pebulate by Tobacco Seedlings

Published online by Cambridge University Press:  12 June 2017

John W. Long ,
Lafayette Thompson Jr.  and
C. E. Rieck
John W. Long
Affiliation:
Dep. of Agron., Univ. of Kentucky, Lexington, KY 40506
Lafayette Thompson Jr.
Affiliation:
Dep. of Agron., Univ. of Kentucky, Lexington, KY 40506
C. E. Rieck
Affiliation:
Dep. of Agron., Univ. of Kentucky, Lexington, KY 40506
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Abstract

Benefin accumulated rapidly in the roots of tobacco (Nicotiana tabacum L. ‘Kentucky 14′) seedlings incubated in nutrient solution containing 14C-labeled benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine) and remained in the roots unaltered. Very low levels of radioactivity were detected in the shoots. Diphenamid (N,N-dimethyl-2,2-diphenylacetamide) accumulated in the shoots of treated plants throughout the treatment period but remained at low levels in the roots. Diphenamid was extensively metabolized in the shoots but only to a slight extent in the roots. The carbon-14 of pebulate (S-propyl butylethylthiocarbamate) accumulated in moderate amounts in both the roots and shoots of the tobacco seedlings, but attempts to recover pebulate failed.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 1 , January 1974 , pp. 42 - 47
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

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