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Re: Biological Control Agent for Canada Thistle



There is an interesting article on this topic in the issue of Science which
came yesterday.  If I recall, there have been some unintended negative
consequences of the release of an insect meant to control thistle.  
Ed Sparling
Professor
Dept of Ag and Resource Econ
B-311 Clark Blg
Colorado State University
Ft Collins, CO   80523

Phone 970-491-6946
Fax   970-491-2067