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Density of Carduus and Cirsium Thistles in Selected Areas of Maryland

Published online by Cambridge University Press:  12 June 2017

Philip W. Tipping
Philip W. Tipping*
Affiliation:
Maryland Dep. Agric., 50 Harry S. Truman Pkwy., Annapolis, MD 21401
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Abstract

In a three county area, the density of musk thistle was higher than plumeless thistle in pastures in the easternmost county, equivalent in the central county, and lower in the westernmost county. Bull thistle was detected frequently, but density was always low. Detection of Canada thistle decreased from east to west.

Keywords

Musk thistle, Carduus thoermeri Weinmplumeless thistle, Carduus acanthoides L. ♯ CRUACCanada thistle, Cirsium arvense (L.) Scop. ♯ CIRARbull thistle, Cirsium vulgare (Savi) Tenore ♯ C3RVUBiological control
Type
Notes
Information
Weed Technology , Volume 6 , Issue 2 , June 1992 , pp. 434 - 436
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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