The Release of Bio-Control Insects for Spotted Knapweed Invasion

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The release of bio-control insects is a carefully controlled process. The various species released on spotted knapweed took place over 15+ years, one species at a time. Competition between these species, as well as effects of predators in the new environment have resulted in success for only a few of the released insects. Spotted knapweed in Western Montana at this time seems to be in a cycle of suppression and release imposed by these few remaining insect species.

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Bill Good has a B.S. from Linfield College, Oregon, and a Ph.D. in zoology and physiology from the University of Wyoming. He had several employment steps before arriving at Montana Tech, including MSU-Western, Agricultural Research Center – Corvallis, MT. He worked on the biological control of weeds, mostly spotted knapweed.