Abstract
DIQUAT as the dibromide (I) is the active constituent of ‘Reglone’* herbicide, which is being used in a wide variety of weed control problems1. It has been shown2,3 that the related bipyridylium herbicide ‘Gramoxone’*, based on the paraquat cation, is subject to significant photochemical degradation in sunlight at certain times of the year; the present communication is concerned with the breakdown of diquat dibromide when exposed to sunlight, which has been studied in the course of a detailed examination of the fate of the chemical after application.
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References
Springett, R. H., Outlook on Agriculture, 4, 226 (1965).
Slade, P., Nature, 207, 515 (1965).
Slade, P., Weed Res., 6, 158 (1966).
Luckiesh, M., Artificial Sunlight (Crosby Lockwood and Sons, London, 1930).
Smith, I., Chromatographic and Electrophoretic Techniques, 396 (W. Heinemann Ltd., London, 1960).
Funderburk, H. H., and Lawrence, J. M., Weeds, 12, 259 (1964).
Slade, P., Symp. on Use of Isotopes in Weed Res. (Vienna: FAO/IAEA, 1966).
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SLADE, P., SMITH, A. Photochemical Degradation of Diquat. Nature 213, 919–920 (1967). https://doi.org/10.1038/213919a0
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DOI: https://doi.org/10.1038/213919a0
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