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Absorption and Translocation of 14C-Ethalfluralin in Cucumber (Cucumis sativus)

Published online by Cambridge University Press:  12 June 2017

M. D. Willis
Affiliation:
Michigan State Univ.
A. R. Putnam
Affiliation:
Dep. Hort. and Pestic. Res. Ctr., Michigan State Univ., E. Lansing, MI 48824

Abstract

Absorption and translocation of 14C-ethalfluralin (N-ethyl-N-(2-methyl-2-propenyl)-2,6-dinitro-4-(trifluoromethyl)benzenamine) were measured in cucumber plants in the field and greenhouse. In field enclosures, cucumbers treated with 1.68 or 3.36 kg ai/ha preemergence soil-surface applications of 14C-ethalfluralin accumulated significantly more 14C in leaves than in petioles, stems, or fruits. In greenhouse studies, 14C-ethalfluralin vapor was absorbed by both cucumber seedling stems and cotyledons. Seedlings absorbed 14C-ethalfluralin from a nutrient solution and translocated 14C into all plant parts. Cucumber absorbed 14C-ethalfluralin topically applied to the stem and translocated 14C acropetally, while only limited basipetal translocation occurred. Although cotyledons absorbed 14C-ethalfluralin, very little 14 C moved out of the treated tissue.

Type
Physiology, Chemistry, and Biochemistry
Copyright
Copyright © 1986 by the Weed Science Society of America 

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