The University of Arizona

Home on the Range: Establishment of a Canada Thistle Biocontrol Agent

Deirdre A. Prischmann-Voldseth, Greta Gramig, Erin E. Burns


Invasive weeds are one of the worst scourges within rangelands, and it is often dif cult to control them using conventional approaches such as herbicides or mowing. But all is not lost—insect allies can help us combat these noxious plants! We are talking about insect biocontrol agents, or plant-eating bugs that feed on weeds. However, there are hurdles these insects must overcome to successfully control weed populations; the rst is establishing a viable population after being released. In this article we fo- cus on one such ecological drama, which is the biocontrol of Canada thistle in North Dakota with a stem-mining weevil. 

DOI: 10.2458/azu_rangelands_v34i5_prischmann-voldseth

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