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Herbicides for Control of Tall Larkspur (Delphinium barbeyi)

Published online by Cambridge University Press:  12 June 2017

Michael H. Ralphs ,
David L. Turner ,
Larry V. Mickelsen ,
John O. Evans  and
Steven A. Dewey
Michael H. Ralphs
Affiliation:
Agric. Res. Ser., U.S. Dep. Agric. Poisonous Plant Res. Lab., 1150 E. 1400 N. Logan, UT 84321
David L. Turner
Affiliation:
Plant Sci., Utah State Univ., Logan, UT 84322. Utah Agric. Exp. Stn. J. Paper No. 3949
Larry V. Mickelsen
Affiliation:
Plant Sci., Utah State Univ., Logan, UT 84322. Utah Agric. Exp. Stn. J. Paper No. 3949
John O. Evans
Affiliation:
Agric. Res. Ser., U.S. Dep. Agric. Poisonous Plant Res. Lab., 1150 E. 1400 N. Logan, UT 84321
Steven A. Dewey
Affiliation:
Agric. Res. Ser., U.S. Dep. Agric. Poisonous Plant Res. Lab., 1150 E. 1400 N. Logan, UT 84321
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Abstract

Control of tall larkspur on mountain rangelands would substantially reduce cattle poisoning. Several herbicides were evaluated for their control of tall larkspur in subalpine and aspen vegetation types. Glyphosate (2.2 kg ai ha−1) and picloram (2.2 kg ae ha−1) killed more than 88% of larkspur plants in both vegetation types. Clopyralid and triclopyr were ineffective at comparable rates. Metsulfuron (88 and 138 g ai ha−1) provided variable control. Glyphosate is nonselective and killed all perennial vegetation, except for Thurbers fescue and mountain brome in the aspen type. Picloram applied at 4.5 kg ha−1 suppressed grasses on the subalpine site, but allowed grasses to increase at lower rates. All herbicides reduced forb cover.

Keywords

Monoethanolamine salt of clopyralid, 3,6-dichloro-2-pyridinecarboxylic acidglyphosate, (N-phosphonomethyl)glycinemetsulfuron, 2-[[[[(4 - methoxy - 6 - methyl - 1,3,5 - triazin-2-yl)amino]carbonyl]amino] sulfonyl]benzoic acidpotassium salt of picloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acidbutoxyethyl ester of triclopyr [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acidtall larkspur [Delphinium barbeyi (L.) Huth. # DELBA], Thurbers fescue (Festuca thurberi Vasey)mountain brome (Bromus carinatus Hook. & Arn.)quaking aspen (Populus tremuloides Michx.)Poisonous plantclopyralidglyphosatemetsulfuronpicloramtriclopyrDELBA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 38 , Issue 6 , November 1990 , pp. 573 - 577
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

1. Aldous, A. E. 1917. Eradicating Tall Larkspur on Cattle Ranges in the National Forests. USDA Farmers Bull. 826.Google Scholar
2. Cook, C. W. and Stubbendieck, J. 1986. Pages 56–61 in Range Research: Basic Problems and Techniques. Soc. Range Manage., Denver, CO.Google Scholar
3. Cronin, E. H. 1974. Evaluation of some herbicide treatments for controlling tall larkspur. J. Range Manage. 27:219–222.CrossRefGoogle Scholar
4. Cronin, E. H., Bowns, J. E., and Johnson, A. E. 1977. Herbicides, nitrogen and control of tall larkspur under aspen trees. J. Range Manage. 30:420–422.CrossRefGoogle Scholar
5. Cronin, E. H. and Nielsen, D. B. 1972. Controlling tall larkspur on snowdrift areas in the subalpine zone. J. Range Manage. 25:213–216.Google Scholar
6. Ellison, L. 1954. Subalpine vegetation of the Wasatch Plateau. Ecol. Monogr. 24:89–184.Google Scholar
7. Kingsbury, J. M. 1964. Pages 131–140 in Poisonous Plants of the United States and Canada. Prentice-Hall, Inc., Englewood Cliffs, NJ.Google Scholar
8. Mickelsen, L. V., Ralphs, M. H., Evans, J. O., and Turner, D. L. 1990. Herbicide control of duncecap larkspur (Delphinium occidentale). Weed Sci. 38:153–157.CrossRefGoogle Scholar
9. Nielsen, D. B. and Cronin, E. H. 1977. Economics of tall larkspur control. J. Range Manage. 30:434–438.Google Scholar
10. Ralphs, M. H. and Turner, D. L. 1989. Difficulty in controlling duncecap larkspur (Delphinium occidentale). Weed Technol. 3:335–339.CrossRefGoogle Scholar
11. SAS. 1990. SAS Technical Report p-200. Release 6.04. SAS Inst., Inc., Cary, NC.Google Scholar
12. Torell, P. J. and Haas, R. H. 1963. Herbicide control of tall larkspur. Weeds 11:10–13.CrossRefGoogle Scholar