Canadian Forest Service Publications

Some aspects of the impact and management of the exotic weed, Scotch broom (Cytisus scoparius [L.] Link) in British Columbia, Canada. 2000. Prasad, R.P. Pages 341-347 in A.K. Mitchell, P. Puttonen, M Stoehr, and B.J. Hawkins, Editors. Journal of Sustainable Forestry, Proceedings: Frontiers of Forest Biology: 1998 Joint Meeting of the North American Forest Biology Workshop and the Western Forest Genetics Association. Part II. Food Products Press, New York, NY.

Year: 2000

Issued by: Pacific Forestry Centre

Catalog ID: 5469

Language: English

Availability: PDF (request by e-mail)

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A recent cutover area near Maple Mountain, Duncan, British Columbia, was planted with 2+1 Douglas fir (Pseudotsuga menziesii) seedlings in 1994. Scotch broom (Cytisus scoparius) invaded the site rapidly. Growth (height and root collar diameter) of Douglas fir seedlings was monitored for 2 years on uncleared plots and on plots where the dense canopy of broom was manually cut and completely removed. Results showed that the broom reduced photosynthetically active radiation by 71% and growth of Douglas fir by 45-46%. Formulations of 3 fungal pathogens (Fusarium tumidum, Pleiochaeta setosa, Chondrostereum purpureum) were tested in a greenhouse for their effects on growth of Scotch broom seedlings. Only F. tumidum was effective, suppressing the growth of 1-, 3- and 6-month-old seedlings.