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Thistle Control with Cultivation, Cropping and Chemicals

Published online by Cambridge University Press:  12 June 2017

Lyle A. Derscheid ,
Russel L. Nash  and
Gail A. Wicks
Lyle A. Derscheid
Affiliation:
South Dakota Agricultural Experiment Station
Russel L. Nash
Affiliation:
Guth Chemical Co.
Gail A. Wicks
Affiliation:
Nebraska Agricultural Experiment Station, North Platte
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Extract

Canada thistle and perennial sowthistle have been given several names by various authors. However, it appears that the Canada thistle used in this study is generally called Cirsium arvense (L.) Scop. and the perennial sowthistle was a mixture of Sonchus arvensis L. and S. uliginosus Bieb. The two species of sowthistle are very similar. However, S. arvensis has “long glandular-hispid peduncles and involucres covered with lead colored glandular phyllaries” and a chromosome complement of 54, while S. uliginosus has “slenderly turbinate to cylindric pale involucres and glaborous white-margined phyllaries” and a chromosome complement of 36.

Type
Research Article
Information
Weeds , Volume 9 , Issue 1 , January 1961 , pp. 90 - 102
Copyright
Copyright © 1961 Weed Science Society of America 

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References

Literature Cited

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