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Browsing Extension Service and Agricultural Experiment Station by Subject "Knapweeds -- Control -- Oregon"

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Browsing Extension Service and Agricultural Experiment Station by Subject "Knapweeds -- Control -- Oregon"

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  • Oregon State University. Extension Service; Detweiler, Amy Jo ([Corvallis, Or.] : Oregon State University, Extension Service, 2003-02)
    Four species of Centaurea are commonly found in central and eastern Oregon, including spotted knapweed (Centaurea maculosa), diffuse knapweed (Centaurea diffusa), Russian knapweed (Centaurea repens), and yellow starth ...
  • Oregon State University. Extension Service ([Corvallis, Or.] : Oregon State University, Extension Service, 2008-09)
    Knapweeds are a serious problem in Oregon because they vigorously invade disturbed or degraded sites and form dense populations that exclude native and desirable plant communities, causing economic and ecological losse ...

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