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Please use this identifier to cite or link to this item: http://purl.umn.edu/23289

Title: THE IMPACT OF KNAPWEED ON MONTANA'S ECONOMY
Authors: Hirsch, Steven A.
Leitch, Jay A.
Authors (Email): Hirsch, Steven A. (coa-nrm@ndsuext.nodak.edu)
Keywords: knapweed (Centaurea diffusa
C. maculosa
and Acroptilon repens)
Montana
economic impact
invasive weeds
rangeland
wildland
Issue Date: 1996
Series/Report no.: Agricultural Economics Report 355
Abstract: The economic impact of three invasive, exotic weeds--diffuse, spotted, and Russian knapweed (Centaurea diffusa, C. maculosa, and Acroptilon repens)--on Montana's economy was estimated using a procedure developed for another invasive weed species. Published data and that from a survey of county weed boards were used to estimate direct negative impacts of over $14 million annually due to infestation of over 2 million acres of rangeland and wildland. This amounts to about $10.63 on each infested grazing land acre and $3.95 on each infested wildland acre. Direct plus secondary economic impacts, estimated using an input-output model, are about $42 million annually, which could support over 500 jobs in the state's economy. This first approximation suggests the knapweed infestation problem in Montana deserves attention, although more work could be done to refine these estimates and to allow estimation of the impacts at sub-state levels.
URI: http://purl.umn.edu/23289
Institution/Association: North Dakota State University>Department of Agribusiness and Applied Economics>Agricultural Economics Reports
Total Pages: 43
Language: English
Collections:Agricultural Economics Reports

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