It was first established as a knapweed biocontrol in the 1980s in Oregon , and it is currently released in the Pacific Northwest . It was first established as Knopweed Biocontrol in Oregon in the 1980s , and is currently released in the Pacific Northwest .
Ia pertama kali ditubuhkan sebagai biocontrol knapweed pada tahun 1980-an di Oregon, dan kini dikeluarkan di Pasifik Barat Laut. Ia pertama kali ditubuhkan sebagai Knopweed Biocontrol di Oregon pada tahun 1980-an, dan kini dikeluarkan di Pasifik Barat Laut.