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Control of Jerusalem Artichoke (Helianthus tuberosus) in Barley (Hordeum vulgare)

Published online by Cambridge University Press:  12 June 2017

David A. Wall ,
Ferdinand A. Kiehn  and
George H. Friesen
David A. Wall
Affiliation:
Agric. Canada Res. Stn., Box 3001, Morden, MB, ROG 1JO
Ferdinand A. Kiehn
Affiliation:
Agric. Canada Res. Stn., Box 3001, Morden, MB, ROG 1JO
George H. Friesen
Affiliation:
Agric. Canada Res. Stn., Box 3001, Morden, MB, ROG 1JO
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Abstract

Field experiments were conducted over a 3-yr period to evaluate the efficacy of herbicides for the control of volunteer Jerusalem artichoke [Helianthus tuberosus (L.) # HELTU] in barley (Hordeum vulgare L.) and on summer fallow. In barley, Jerusalem artichoke was controlled with a single postemergence application of clopyralid (3,6-dichloro-2-pyridinecarboxylic acid) at 1 kg ae/ha, or at 0.5 kg/ha when combined with 2,4-D [(2,4-dichlorophenoxy)acetic acid] at 0.5 kg ae/ha. Dicamba (3,6-dichloro-2-methoxybenzoic acid) at 0.2 kg ae/ha plus 2,4-D at 0.4 kg/ha was also an effective combination. Split applications of 2,4-D at 0.4 kg/ha each were more effective than a single treatment at 0.8 kg/ha. On summer fallow, glyphosate [N-(phosphonomethyl)glycine] applied at 0.5 to 2 kg ai/ha, as a single or repeated treatment, provided only marginal control of Jerusalem artichoke during the season of treatment and, in one of three experiments, reduced regrowth in the year following treatment.

Keywords

Glyphosatedicamba2,4-DcompetitionclopyralidchlorsulfuronpicloramHELTUMCPA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 34 , Issue 5 , September 1986 , pp. 761 - 764
Copyright
Copyright © 1986 by the Weed Science Society of America 

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References

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