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Vapor Absorption and Translocation of Dinitroaniline Herbicides in Oats (Avena sativa) and Peas (Pisum sativum)

Published online by Cambridge University Press:  12 June 2017

G. L. Jacques  and
R. G. Harvey
G. L. Jacques
Affiliation:
Dep. Agron., Univ. of Wisconsin, Madison, WI 53706
R. G. Harvey
Affiliation:
Dep. Agron., Univ. of Wisconsin, Madison, WI 53706
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Abstract

Roots or shoots of oats (Avena sativa L. ‘Dal’) and peas (Pisum sativum L. ‘Early Perfection’) were exposed to vapors of 14C-labeled benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine), dinitramine (N4,N4-diethyl-α,α,α-trifluoro-3,5-dinitrotoluene-2,4-diamine), fluchloralin [N-(2-chloroethyl)-2,6 dinitro-N-propyl-4-(trifluoromethyl)aniline], oryzalin (3,5-dinitro-N4,N4-dipropylsulfanilamide), profluralin [N-(cyclopropylmethyl)-α,α,α-trifluoro-2,6-dinitro-N-propyl-p-toluidine], and trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine). All of the dinitroaniline herbicides except oryzalin were absorbed by roots and shoots of germinating oats and peas. Some root-shoot translocation of the herbicides was observed in peas, but no shoot-root transport could be detected in either peas or oats. In peas, 14C from root-absorbed benefin, fluchloralin, profluralin and trifluralin was detected in shoots, and 14C from benefin and trifluralin was detected in cotyledons. In general, vapor absorption was correlated with rates of herbicide volatilization.

Keywords

Herbicide volatilityroot and shoot uptakevapor pressure
Type
Research Article
Information
Weed Science , Volume 27 , Issue 4 , July 1979 , pp. 371 - 374
Copyright
Copyright © 1979 by the Weed Science Society of America 

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