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I'aer 12 ul ? <br />~I:mairmrnt <br />AplwnJix I <br />IAlhrec mtd spotted knapwecJ can hr rnanagcd snnrlarlY ~ihcy arc readily contrdlcd wrth hMhrcrdes <br />I lowcver, the weitls will reimadc unless cultural tcchniyucs arc used <br />Chemical ('ontrol of Sported Rnapweed <br />I(esearch conducted at Colorado titate l'nivcrstty indicates thin Turdon '?K Ipiclorarnl of I to? pVA, <br />irarrnhnc Icbq,yrrfidl at r1 67 to I pbA. ('urtail rclrrywrabd • ZA-U) at 4 a, h ptrA. ur <br />ITansrl~\'snyurshK'lanty (dreamhal m I to' pvA amt« ~I drtlusc knapw'eud I ank mhos of <br />IiarncUVanyutsh'Clarrty phrs 3A-D at 1 pl ~ pbA a Ransel~l'anyuisluClarily plu, "fnrdon 22K at 1 W <br />pr • U < «, I puA ur Turdon plus 2A-t) at+.i 7> pt •_ p(+,\ all amuof JrlTua• knapwsrd Ihesr tank-miles <br />may save mrmec anJ rcJura: grass mtun resJbng t}om higher use rates of a smgk herhicidr <br />Spnttcd knapwred and ditilrsr knapsvee(1 generally occupy the same area in Colondu, u, the same <br />hrrbiciJc ucaunrms wn be applied \4'crd scrrnlisis.u ~tootana Smtr 1'nnersity indicate that I pUA of <br />Turdon N> ?S Ib) controls xpouat knapwcrd for two to there years. but the wcr<1 wdl reinvade the aeon <br />unless other manaeernrnu techrnyurs are used <br />\kchanical Control of SlwlleJ KnapweeJ <br />I(dcstrabtc grans competition rs evident m JitT'use or spotted knapwecd stands. {udicious herbx7de <br />application Thar dncK not m~ure grasses may allow (hem m compete etTr•ctnely with the wreck Irrigarinn <br />hshtte possible) may help stimulate grass competition m thr.~sr cases Hmeevcr, infested rangeland or <br />pastua•> often arc Jcgradc~J, allowing knapwsr?d mrasion. an<I hc76radca aiunc will nut rcya,rc the land m a <br />prcxlucurc state Seeding suitable percnmal grasses rs ncccs ary to prevent ,seed rmm~asiexr <br />I)if~futie knapweecl <br />