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Biology and Control of Tall Ironweed (Vernonia altissima)

Published online by Cambridge University Press:  12 June 2017

Richard K. Mann ,
Steven W. Rosser  and
William W. Witt
Richard K. Mann
Affiliation:
Dep. Agron., Univ. of Kentucky, Lexington, KY 40546-0091
Steven W. Rosser
Affiliation:
Dep. Agron., Univ. of Kentucky, Lexington, KY 40546-0091
William W. Witt
Affiliation:
Dep. Agron., Univ. of Kentucky, Lexington, KY 40546-0091
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Abstract

Tall ironweed (Vernonia altissima Nutt.) is a perennial with underground, axillary vegetative buds from which new shoots are produced. In a 2-yr study, tall ironweed plants averaged 6115 seeds/plant. Germination of buried seeds increased with increased time of burial. Foliar herbicide applications were evaluated for control of tall ironweed plants in the pre- to early-bud stages of growth. The triethylamine salt or ethylene glycol butyl ether ester of triclopyr {[(3,5,6-trichloro-2-pyridinyl)oxy] acetic acid} was the most effective, providing 93 to 90% control of top growth and regrowth of tall ironweed. The butoxyethanol and propylene glycol butyl ether esters of 2,4-D [(2,4-dichlorophenoxy) acetic acid] alone and in combination with the amine salt of triclopyr also provided excellent control.

Keywords

Festuca arundinaceaseed germinationregrowthvegetative buds
Type
Research Article
Information
Weed Science , Volume 31 , Issue 3 , May 1983 , pp. 324 - 328
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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