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Interactions of Diclofop-Methyl and 2,4-D in Cultivated Oats (Avena sativa)

Published online by Cambridge University Press:  12 June 2017

R. A. Fletcher  and
D. M. Drexler
R. A. Fletcher
Affiliation:
Dep. Environ. Biol., Univ. of Guelph, Guelph, Ontario, Canada N1G 2W1
D. M. Drexler
Affiliation:
Dep. Environ. Biol., Univ. of Guelph, Guelph, Ontario, Canada N1G 2W1
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Abstract

The chlorophyll levels and growth of oat (Avena sativa L. ‘Elgin’) seedlings were drastically reduced after foliar application of diclofop-methyl {methyl 2-[4-(2,4-dichlorophenoxy)phenoxy] propanoate}. The leaves were chlorotic and necrotic with the newly emerging leaves being most affected. Plants treated with 2,4-D [(2,4-dichlorophenoxy)acetic acid] were similar to the controls. When 2,4-D was applied to intact plants in combination with diclofop-methyl the toxicity symptoms produced by diclofop-methyl were reduced. Diclofop-methyl disrupted membrane integrity and inhibited chlorophyll formation in excised leaf segments. Addition of 2,4-D with diclofop-methyl did not change the effects produced by diclofop-methyl alone in excised leaf segments.

Keywords

Antagonismchlorophyllmembrane
Type
Research Article
Information
Weed Science , Volume 28 , Issue 4 , July 1980 , pp. 363 - 366
Copyright
Copyright © 1980 by the Weed Science Society of America 

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References

Literature Cited

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