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Studies on the mode of action of asulam in bracken (Pteridium aquilinum L. Kuhn)

Published online by Cambridge University Press:  05 December 2011

R. C. Kirkwood ,
P. Veerasekaran  and
W. W. Fletcher
R. C. Kirkwood
Affiliation:
Department of Biology, University of Strathclyde, Glasgow Gl 1XW
P. Veerasekaran
Affiliation:
Department of Biology, University of Strathclyde, Glasgow Gl 1XW
W. W. Fletcher
Affiliation:
Department of Biology, University of Strathclyde, Glasgow Gl 1XW
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Synopsis

The efficiency of bracken control using foliage-applied translocated herbicides depends upon the accumulation of a potentially lethal concentration of the active ingredient at the sites of action, the rhizome buds. There is evidence that the level of herbicide accumulation at these target sites is determined by a number of factors including the efficiency of cuticle penetration, absorption, translocation, metabolism and activity at the enzyme target sites. The level of metabolic activity of the rhizome/frond buds may be critical, dormant buds possibly receiving a sublethal dose. These buds may later become active and act as foci for reinfestation.

The nature of these problems is discussed with particular reference to studies carried out on the mode of action of [14C]asulam.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 81 , Issue 1-2: Bracken in Scotland , 1982 , pp. 85 - 96
Copyright
Copyright © Royal Society of Edinburgh 1982

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