Publication | Open Access
Meadow knapweed invasion in the Pacific Northwest, U.S.A. and British Columbia, Canada.
17
Citations
0
References
1991
Year
Ifost of the noxious rveeds irr vestern \orth .{mericaare non nlive phnts that hare been inllduced Irom liurusir.Sereral al4n taurea specles \C.ntucuLt than th.v !r'in th(iiniltir.hll)ilats.B(!ruii all sper:ies do rot hare equal potertial for exparsion, this studr sas undertalen lodl]llJminl]lhl'!r!)unlarldrlistributiono|[oIh.|C.nk|Ra'rleadorll<naprveed. blacf knupr*rd lcenk\tut!nistu 1..) rrl hft^lr knapueed tC.titea L.).The surrev begar unh locations on herbarnrm labels and was completed rvith locations and arnounts obtained through field searches in Britislr (irlurnbia.ldaho.trllontana.Oregon and tr'ashington bl prolessionals in weed education and control.Brorsn and blacl krapveed.botir latire ro Europe and inroduced in the Pacilic \orrhwest rfound rhe tLrrn of thr cennu-v.hare decrea-.edsnrce dre 1950i.The distribution of rreador,' knapweed has incrersed.in,licarins rhar thc hvbrirJ is bottir adrpted ro (oDdirions inthePacifcNoI1hirestlhrneithero1'itspaults.in|rlaho-3rrluntjcsjllN1r)|lhn!.l8(ln|nLi.c;l()f,go..aod19.ou|tiesj|tashingtol-foratotalo|alior m,urlx kruprrrrl inrludr 3 L,catnrrs in BriLish ColLunbia.2 counries nr Idaho.2 counties in IIontana.9 counries in Oregon