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Assessing Benthic Barriers vs. Aggressive Cutting as Effective Yellow Flag Iris (Iris pseudacorus) Control Mechanisms

Published online by Cambridge University Press:  20 January 2017

Catherine S. Tarasoff ,
Kailee Streichert ,
Wendy Gardner ,
Brian Heise ,
John Church  and
Thomas G. Pypker
Catherine S. Tarasoff*
Affiliation:
Agrowest Consulting, Kamloops, BC V2E 2M8, Canada
Kailee Streichert
Affiliation:
Department of Natural Resources, Thompson Rivers University, 900 McGill Road, Kamloops, BC V2C 0C8, Canada
Wendy Gardner
Affiliation:
Department of Natural Resources, Thompson Rivers University, 900 McGill Road, Kamloops, BC V2C 0C8, Canada
Brian Heise
Affiliation:
Department of Natural Resources, Thompson Rivers University, 900 McGill Road, Kamloops, BC V2C 0C8, Canada
John Church
Affiliation:
Department of Natural Resources, Thompson Rivers University, 900 McGill Road, Kamloops, BC V2C 0C8, Canada
Thomas G. Pypker
Affiliation:
Department of Natural Resources, Thompson Rivers University, 900 McGill Road, Kamloops, BC V2C 0C8, Canada
*
Corresponding author's E-mail: [email protected]
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Abstract

An experiment was initiated to study the effects of rubber benthic barriers vs. aggressive cutting on the invasive aquatic emergent plant, yellow flag iris. Treatments were compared against a control at two locations within British Columbia, Canada (Vaseux Lake and Dutch Lake). Yellow flag iris response was significantly different between the two sites, but biologically the results were identical: the benthic barrier killed yellow flag iris rhizomes within 70 d of treatment. Over the extent of the research, at Vaseux Lake the effect of aggressive cutting was no different from the control, while aggressive cutting was statistically no different than the benthic barrier at Dutch Lake. Vegetation regrowth approximately 200 d after the benthic barriers were removed was not detected at either location. These results indicate that rubber benthic barriers may be an effective treatment for yellow flag iris and maybe suitable for other, similar species.

Keywords

Yellow flag irisIris pseudacorus L. IRPSIntegrated pest managementmechanical controlyellow flag iris
Type
Research Article
Information
Invasive Plant Science and Management , Volume 9 , Issue 3 , September 2016 , pp. 229 - 234
Copyright
Copyright © 2016 Weed Science Society of America 

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