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Carpeted Roller Application of Herbicides for Larkspur (Delphinium spp.) Control

Published online by Cambridge University Press:  12 June 2017

F. Brent Bunderson ,
Michael H. Ralphs ,
John O. Evans ,
Christopher A. Call  and
Darwin B. Nielsen
F. Brent Bunderson
Affiliation:
USDA/ARS Poisonous Plant Res. Lab., Logan, UT 84321
Michael H. Ralphs
Affiliation:
USDA/ARS Poisonous Plant Res. Lab., Logan, UT 84321
John O. Evans
Affiliation:
Plants, Soils, and Biomet. Dep., Utah State Univ., Logan, UT 84321
Christopher A. Call
Affiliation:
Range Sci. Dep., Utah State Univ., Logan, UT 84321
Darwin B. Nielsen
Affiliation:
Econ. Dep., Utah State Univ., Logan, UT 84321
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Abstract

A carpeted roller applicator and broadcast sprayer were compared for application of glyphosate, metsulfuron, and picloram to control duncecap and tall larkspur on mountain range sites in southern Idaho and central Utah, respectively. Glyphosate was the most effective herbicide, controlling 96% of both larkspur species when applied by the sprayer and 78% when applied by the roller. There was no difference in larkspur control between application methods using metsulfuron or picloram. Application of herbicides by the carpeted roller was less detrimental to forbs compared to the sprayer, and the roller application of glyphosate did not reduce grass cover. Grass cover doubled following treatments with picloram and metsulfuron.

Keywords

Glyphosate, N-(phosphonomethyl)glycinemetsulfuron, 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acidpicloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acidduncecap larkspur, Delphinium occidentale S. Wats # DELOCtall larkspur, Delphinium barbeyi (L.) Huth # DELBABroadcast sprayercarpeted roller applicatorpoisonous plantDelphinium barbeyiDelphinium occidentaleDELBADELOC
Type
Notes
Information
Weed Technology , Volume 9 , Issue 2 , June 1995 , pp. 392 - 396
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

Literature Cited

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