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In irrigated grass hay meadows, fall herbicide treatments that follow mowing can he an effective management system <br />because more ('anada thistle foliage is present after cutting to intercept herbicide. Additionally. root nutrient stores <br />decrease idler mowing because the plant draws on them to develop new shoots. <br />It a ('anada thistle infestation exists in a field that will he rotated to alfalfa, control the weed before seeding altalta <br />Alfalfa is an effective competitor only after it is established It will not adequately establish in a well - developed ( anada <br />thistle infestation A Canada thistle management system can start with crop or grass competition combined w ith <br />herbicides, with the field rotated to alfalfa when the management plan ends <br />Musk thistle <br />Management <br />Cultural control of Musk Thistle <br />Maintaining pastures and rangeland in good condition is a primary factor for musk thistle management l o favor pasture <br />and rangeland grass growth, do not overgraze. fertilise only when necessary and according to sod testing <br />recomnnendations I o successfully manage musk thistle. prevent seed formation. <br />Mechanical control of Musk Thistle <br />Musk thistle will not tolerate tillage and can he removed easily by severing its root below ground with a shovel or hen. <br />Mow inu can effectively reduce seed output if plants are cut when the terininal head Is in the late - flowering stage (lather <br />and burn mowed debris to destroy any seed that has developed <br />Chemical Control of Musk Thistle <br />Several herbicides are registered in pasture, rangeland and noncrop areas to control musk thistle. Fordon 22K <br />Ipictoram), Curtail (clopyralid +2,4 -I)). 13anvcl /Vanquish tdicamha), 2,4 -1). or Ranvcllianqutsh%('larity plus <br />2.4 -1) are commonly used, Apply these herbicides in spring or tall to musk thistle rosettes <br />