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Effects of Ultraviolet Light on Herbicides

Published online by Cambridge University Press:  12 June 2017

L. S. Jordan ,
J. D. Mann  and
B. E. Day
L. S. Jordan
Affiliation:
Department of Horticultural Science, University of California, Riverside, California
J. D. Mann
Affiliation:
Department of Horticultural Science, University of California, Riverside, California
B. E. Day
Affiliation:
Department of Horticultural Science, University of California, Riverside, California
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Abstract

Recrystallized 3-(p-chlorophenyl)-1,1-dimethylurea (monuron), 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron), 3-phenyl-1,1-dimethyl-urea (fenuron), 1-n-butyl-3-(3,4-dichlorophenyl)-1-methylurea (neburon), 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine), 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine), 5-bromo-3-isopropyl-6-methyluracil (isocil), and 5-bromo-3-sec-butyl-6-methyluracil (bromacil) were deposited in thin layers on aluminum planchets, irradiated with far, middle, and near ultraviolet light and collected in ethanol. Spectral changes in the ultraviolet region and losses were determined spectrophotometrically. The greatest changes and losses occurred with far ultraviolet and the least with near ultraviolet irradiation. Little or no spectral changes occurred in the dark, but there was some loss of each herbicide.

Type
Research Article
Information
Weeds , Volume 13 , Issue 1 , January 1965 , pp. 43 - 46
Copyright
Copyright © 1965 Weed Science Society of America 

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References

Literature Cited

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