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Persistence and Distribution of Monuron and Neburon in an Aquatic Environment

Published online by Cambridge University Press:  12 June 2017

Peter A. Frank
Peter A. Frank*
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Denver, Colorado
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Abstract

The loss of 3-(p-chlorophenyl)-1,1-dimethylurea (monuron) and 1-butyl-3-(3,4-dichlorophenyl)-1-methylurea (neburon) from an aquatic situation was studied. Appreciable loss of herbicides did not occur until 8 and 16 weeks after application of neburon and monuron, respectively. Periods of loss at an accelerated rate followed until approximately 50% of the herbicides disappeared. Further loss was observed but at a steadily decreasing rate. Approximately 15% of the monuron and 39% of the neburon remained after 128 weeks. More monuron was found in water than in soil during the first 32 weeks. After 32 weeks, most of the monuron was found in the soil and was largely in the top 4 in. The largest fraction of neburon was recovered from the soil and soil surface during all 128 weeks. Monuron moved down in the soil more readily than neburon.

Type
Research Article
Information
Weeds , Volume 14 , Issue 3 , July 1966 , pp. 219 - 222
Copyright
Copyright © 1966 Weed Science Society of America 

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References

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