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Absorption and Distribution of Diuron–C14

Published online by Cambridge University Press:  12 June 2017

D. E. Bayer  and
S. Yamaguchi
D. E. Bayer
Affiliation:
Department of Botany, University of California, Davis, California
S. Yamaguchi
Affiliation:
Department of Botany, University of California, Davis, California
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Abstract

Diuron, 3-(3,4-dichlorophenyl)-1,1-dimethylurea-C14, moved primarily in the apoplast with the transpiration stream, and did not move with the plant assimilates of red kidney bean, soybean, and barley plants. There did not appear to be a species difference in absorption, distribution, and accumulation. Uptake and distribution increased progressively as duration of treatments increased from 6 hours to 16 days. No phloem movement and distribution was observed in the 16-day treatment time. The addition of a surfactant did not alter the translocation pattern of diuron.

The evidence obtained from gross autoradiographs did not eliminate the possibility that very small amounts of diuron may get into the symplast. However, it did indicate that if diuron moved into the symplast, it was restricted and the movement of diuron out of the area of application by phloem was very limited.

Type
Research Article
Information
Weeds , Volume 13 , Issue 3 , July 1965 , pp. 232 - 235
Copyright
Copyright © 1965 Weed Science Society of America 

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References

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