Field Trials of Sclerotinia sclerotiorum to Control Canada Thistle (Cirsium arvense)
- 1 May 1986
- journal article
- research article
- Published by Cambridge University Press (CUP) in Weed Science
- Vol. 34 (3) , 377-380
- https://doi.org/10.1017/s0043174500067011
Abstract
An isolate of Sclerotinia sclerotiorum (Lib.) de Bary collected from a Canada thistle [Cirsium arvense (L.) Scop. # CIRAR] plant in Montana proved pathogenic on Canada thistle in field trials. In addition to attacking the thistle crown and causing wilting and death of the shoots, S. sclerotiorum also infected the root system. The high percentage of thistle shoot kill (20 to 80%) after treatment, and subsequent reduction in plant thistle density the following year, demonstrated the potential of S. sclerotiorum as a biological control agent for Canada thistle in Montana.Keywords
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