Hostname: page-component-848d4c4894-jbqgn Total loading time: 0 Render date: 2024-06-29T00:19:04.605Z Has data issue: false hasContentIssue false
  • English
  • Français

Canada Thistle Control on Roadsides

Published online by Cambridge University Press:  12 June 2017

L. E. Foote ,
D. L. Kill  and
C. S. Williams
L. E. Foote
Affiliation:
Minnesota State Highway Department
D. L. Kill
Affiliation:
U.O.P., Johnson Div.
C. S. Williams
Affiliation:
The Dow Chemical Company, Plant Science Research and Development, Midland, Michigan
Get access Rights & Permissions [Opens in a new window]

Abstract

Canada thistle (Cirsium arvense (L.) Scop.) on roadsides was controlled by 4-amino-3,5,6-trichloropicolinic acid (picloram), (2,4-dichlorophenoxy)acetic acid (2,4-D), and (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T), alone and in combination at various rates. There was no synergistic or additive effect, as determined by Canada thistle response, due to the addition of 2,4-D or 2,4,5-T to picloram. Control with ¾ lb/A picloram was not significantly less than that obtained with higher rates 1½ and 2 lb/A. Picloram reduced Canada thistle stands 80 to 100% and 2,4-D generally reduced the plant population 50% or less during the year of application and the year after. Late summer appeared to be an opportune time for spraying Canada thistle with ¾ to 1 lb/A picloram.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 2 , March 1970 , pp. 307 - 310
Copyright
Copyright © 1970 Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Alley, H. P. and Lee, G. A. 1966. Chemical control of Canada thistle second year after application. Res. Prog. Rep. West. Weed Contr. Conf. p. 4.Google Scholar
2. Alley, H. P. and Lee, G. A. 1969. Evaluation of picolinic acid, picolinic acid-2,4-D combinations of dichlobenil applied as dormant treatments for control of Canada thistle (Cirsium arvense L.). Res. Prog. Rep. West. Weed Contr. Conf. pp. 6–7.Google Scholar
3. Heikes, E. E. 1964. Tordon and other herbicides … field testing for the control of deep-rooted perennial weeds in Colorado. Down to Earth 20(3):9–12.Google Scholar
4. Hodgson, J. M. 1965. Control of Canada thistle with picloram and certain other chemicals. Res. Prog. Rep. West. Weed Contr. Conf. pp. 4–6.Google Scholar
5. Hodgson, J. M. 1958. Canada thistle control with cultivation, cropping, and chemical sprays. Weeds 6:1–10.CrossRefGoogle Scholar
6. Hodgson, J. M. 1968. Canada thistle and its control. U. S. Dep. Agr. Leaflet No. 523. 8 p.Google Scholar
7. Laning, E. R. 1963. Tordon for the control of deep-rooted perennial weeds in the western states. Down to Earth 19(1):3–5.Google Scholar
8. Lee, G. A., Dobrenz, A. K., and Alley, H. P. 1967. Preliminary investigations of the effects of Tordon and 2,4-D on leaf and root tissue of Canada thistle. Down to Earth 23(2):21–23.Google Scholar
9. Krawiec, S. and Morré, D. J. 1968. Interactions of Tordon herbicide applied in combinations. Down to Earth 24(3):7–10.Google Scholar
10. Warden, R. L. 1964. Tordon for the control of field bindweed and Canada thistle in the North Central United States. Down to Earth 20(2):6–10.Google Scholar