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Integrated Weed Management recommendations :lip <br /> w �f CULTURAL <br /> Establishment of selected grasses can <br /> be an effective . • of Musk <br /> Contact your cultural• <br /> 'Resources Conservation Service for seed <br /> •.F Maintainmix recommendations. Integrated Weed <br /> pasturesb, spots .� Man2gement.- <br /> by overgrazing. <br /> _ _ • • prime <br /> •• • '• invasions. The key to <br /> "� managing <br /> .�..1 <br /> BIOLOGICAL <br /> Plumeless thistle <br /> insects,Biological control is to prevent <br /> weevilseed head seedproduction. <br /> Dense Plumelessused <br /> together, eseprov _ thistle stands can <br /> 'fair to be treated by spot- <br /> been <br /> J �ood control. These insects �known � thistle use ofherbicide <br /> popuiContacto programs. Due <br /> Colorado Dep. . • _ to the unknown <br /> get complete information , seed viability of <br /> • • • .•• •• Plumeless thistle, <br /> (� s monitoring up <br /> to 10years,and <br /> repeating control <br /> I MECHANICALmethods may <br /> • . •• need to occur <br /> �.tsevers the•root below the s• for many years <br /> Q� awill kill Plumeless thistle. Mowingto completely <br /> chopping is • effective - eliminate an <br /> thistlePlumeless plants are at full infestation. <br /> kbloom. <br /> floweringplants since seeds <br /> CIS ;mature • become vi after the <br /> able <br /> plant been down. <br /> C'd <br /> HERBICIDES <br /> NOTE: The following are recommendations for herbicides that can be applied to range and <br /> pasturelands. Rates are approximate and based on equipment with an output of 30 gal/acre. <br /> Please read label for exact rates. Always read,understand,and follow the label directions. The <br /> herbicide label is the LAW!. <br /> Herbicide . <br /> • Aminopyralid*(Milestone) 5 oz.product/acre+ Apply in spring rosette to early bolting <br /> 0.25%v/v non-ionic growth stages or in fall to rosettes. <br /> surfactant <br /> Chlorsulfuron**(Telar) 1-2.6 oz. product/acre+ Apply in spring from rosette through very <br /> • 0.25%v/v non-ionic early flower growth stages. (Can prevent <br /> • surfactant viable seed formation if applied no later <br /> • than the first viable flowers begin to <br /> Clopyralid(Transline) 0.67-1.33 pints Apply to rosettes through flower bud stagerjlr <br /> product/acre+0.25% in spring,or to fall rosettes. I c' <br /> v/v non-ionic surfactant <br /> Note:*Product not permitted for use in the San Luis Valley.**This herbicide has residual soil <br /> activity that will affect all broadleaf seedlings germinating after application has occurred. • <br /> Additional herbicide recommendations for this and otherspecies can be found at: <br /> www.colorado.gov/agconservati on/CSUHe rbicide Recomme ndati ons.pdf <br /> i 0111MYS lib -tvdonrormv`La e i A'Uk; 0ii•giinirJbi�rerilnii:-ihsntutearra'3S.are61iverstiy;& wou2orgr, tvicnara.6111', <br /> XID Services,Inc.,Bugwood.org;and Kelly Uhing,Colorado Department of Agriculture. <br />