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The Fate of 2,4-D Applied to Viking Birdsfoot Trefoil and a Resistant Intercross

Published online by Cambridge University Press:  12 June 2017

W. M. Blacklow  and
D. L. Linscott
W. M. Blacklow
Affiliation:
Department of Agronomy, Cornell University
D. L. Linscott
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Ithaca, N.Y.
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Abstract

The fate of the potassium salt of 2,4-dichlorophenoxyacetic acid (2,4-D) when applied to birdsfoot trefoil (Lotus corniculatus L., var. Viking) and an intercross resistant to 2,4-D was studied. No difference in spray retention per mg fresh weight between the two trefoils was detected and more than 98% of 2,4-D-2-14C was absorbed within 2 days after application. Herbicide moved from treated leaves to young leaves, stems, and roots in about equal quantities. Seven days after treatment, 70% of the 14C activity of 2-propanol extracts of both trefoils was 2,4-D-2-14C; the remaining activity of the extract was from unknown metabolites of 2,4-D. The total activity recovered from the tolerant selection and Viking, respectively, was 57% and 50% of that applied. The methods used failed to establish a clear basis for the difference in reaction of the two birdsfoot trefoils to 2,4-D.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 4 , October 1968 , pp. 516 - 519
Copyright
Copyright © Weed Science Society of America 

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References

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