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Control of Bigroot Morningglory (Ipomoea pandurata)

Published online by Cambridge University Press:  12 June 2017

Michael J. Horak  and
Loyd M. Wax
Michael J. Horak
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Crop Prot. Res., Dep. Agron., Univ. Illinois, 1102 S. Goodwin Ave., Urbana, IL 61801
Loyd M. Wax
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Crop Prot. Res., Dep. Agron., Univ. Illinois, 1102 S. Goodwin Ave., Urbana, IL 61801
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Abstract

Herbicide efficacy was examined in the greenhouse on bigroot morningglory seedlings and on established plants in the field. Dicamba (0.14 kg ae ha-1) and 2,4-D (0.28 kg ae ha-1) alone or combined, glyphosate (2.24 kg ai ha-1), fluroxypyr (0.28 kg ae ha-1), and triclopyr (0.42 kg ae ha-1) controlled more than 90% of bigroot morningglory seedlings. Fluroxypyr (0.56 kg ha-1), triclopyr (0.84 kg ha-1), and 2,4-D (0.56 kg ha-1) alone or combined with dicamba (0.28 kg ha-1) reduced established stands in the field at least 50% within the season of application, whereas clopyralid (0.56 kg ha-1) did not provide acceptable control. Glyphosate (2.24 kg ha-1) was among the best treatments for long term control at all locations.

Keywords

Clopyralid, 3,6-dichloro-2-pyridinecarboxylic aciddicamba, 3,6-dichloro-2-methoxybenzoic acidfluroxypyr, [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acidglyphosate, N-(phosphonomethyl)glycinetriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid2,4-D, (2,4-dichlorophenoxy)acetic acidbigroot morningglory, Ipomoea pandurata (L.) G. F. W. Meyer # IPOPAPerennial weed controlherbicide efficacyIPOPA
Type
Research
Information
Weed Technology , Volume 6 , Issue 4 , December 1992 , pp. 824 - 827
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

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