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Factors Affecting Translocation of 2,4-D in Leafy Spurge

Published online by Cambridge University Press:  12 June 2017

James H. Hunter
Affiliation:
Canada Dep. of Agr., Regina Research Station, Box 440, Regina, Saskatchewan
G. I. McIntyre
Affiliation:
Canada Dep. of Agr., Regina Research Station, Box 440, Regina, Saskatchewan

Abstract

The translocation of foliar-applied 14C-labelled 2,4-D [(2,4-dichlorophenoxy)acetic acid] in seedlings of leafy spurge (Euphorbia esula L.) was investigated. Approximately 90% of the tracer was extracted from the tissues with 80% ethanol. Seven days after treatment 48% of the 14C in the shoot extract and 75% of that extracted from the root were identified chromatographically as 2,4-D. Translocation out of the treated leaves and into the shoot, root, and root buds was significantly increased both by decapitation of the shoot and by increasing the nitrogen supply. This effect is attributed to the marked promotion of bud growth produced by both of these treatments.

Type
Research Article
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

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