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The Response of Canada Thistle Ecotypes to 2,4-D, Amitrole, and Intensive Cultivation

Published online by Cambridge University Press:  12 June 2017

J. M. Hodgson
J. M. Hodgson*
Affiliation:
Crops Research Division, Agr. Res. Ser., U. S. Dep. of Agr.
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Abstract

Root sections of Canada thistle (Cirsium arvense (L.) Scop.) ecotypes from different states were field planted at Bozeman, Montana. Canada thistle survival from repeated applications of (2,4-dichlorophenoxy)acetic acid (2,4-D), and 3-amino-1,2,4-triazole (amitrole) was markedly different. Ecotypes varied less markedly to cultivation although they differed significantly. Resistance of ecotypes to cultivation seemed related to adaptation to site while resistance to herbicides apparently was related to inherent physiological differences as well as to differences in adaptation.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 2 , March 1970 , pp. 253 - 255
Copyright
Copyright © 1970 Weed Science Society of America 

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References

Literature Cited

1. Bakke, A. L. 1947. Discussion of Canada thistle control. Proc. North Cent. Weed Contr. Conf. 4:7–8.Google Scholar
2. Detmers, Freda. 1927. Canada thistle (Cirsium arvense Tourn.) field thistle, creeping thistle. Ohio Agr. Exp. Sta. Bull. 414. 45 p.Google Scholar
3. Hodgson, J. M. 1968. The nature, ecology and control of Canada thistle. U. S. Dep. of Agr. Tech. Bull. 1386. 32 p.Google Scholar
4. Hodgson, J. M. 1958. Canada thistle control with cultivation, cropping, and chemical sprays. Weeds 6:19–21.CrossRefGoogle Scholar
5. Hodgson, J. M. 1964. Variations in ecotypes of Canada thistle. Weeds 12:167–171.CrossRefGoogle Scholar
6. Sexsmith, J. J. 1964. Morphological and herbicidal susceptibility differences among strains of hoary cress. Weeds 12:19–21.Google Scholar
7. Thornton, Bruce S. and Bohmont, D. W. 1950. Use of growth regulating compounds in controlling perennial weeds. Proc. West. Weed Cont. Conf. 12:76–89.Google Scholar
8. Whitworth, J. W. 1964. The reaction of strains of field bindweed to 2,4-D. Weeds 12:57–58.CrossRefGoogle Scholar
9. Whitworth, J. W. and Muzik, T. J. 1967. Differential response of selected clones of bindweed to 2,4-D. Weeds 15: 275–280.Google Scholar