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Recommended management methods: <br />Cultural - Seeding and maintaining aggressive grasses will help in competing <br />with Russian knapweed and slow its spread. Species such as thickspike <br />wheatgrass and streambank wheatgrass have proven to be effective competition <br />against Russian knapweed infestations. Proper grazing management will <br />stimulate grass growth and keep pastures healthy. Healthy pastures may be <br />more resistant to Russian knapweed invasion. Bare spots caused by overgrazing <br />are prime habitat for weed infestations. <br />Mechanical - Due to the extensive root system, hand -pulling this plant is not a <br />viable option. Cutting several times before the plants bolt stresses Russian <br />knapweed plants and forces them to use nutrient reserves stored in the root <br />system. Combining mowing with herbicides will further enhance control of this <br />weed. Mow repeatedly during the summer then apply a herbicide in the fall. <br />Herbicides - The following are recommendations for herbicides that can be <br />applied to range and pasturelands. A combination of seeding competitive grasses <br />and the application of herbicides have proven to be effective in managing <br />Russian knapweed. <br />Always read, understand, and follow herbicide label directions. The herbicide <br />label is the LAW! <br />Clarity + 2,4-D I 1 qt./acre for <br />Aminc or <br />I oz/gal water for each <br />product <br />Curtail <br />3 qts./acre <br />or <br />3.0 ozl al water <br />Tordon 22K <br />1 qt./acre <br />*this is a <br />or <br />Restricted Use <br />1.0 oz/gal water <br />Pesticide* <br />Milestone <br />4 to 5 oz! acre <br />Spring- bud to early flower stage and/or fall rosette stage. DO <br />NOT apply when outside temperatures will exceed 85 degrees. <br />Add non-ionic surfactant C 0.32 oz/gal water or <br />1 gt/100 gal water. <br />Spring- bud to early flower stage and/or fail rosette stage. <br />Add non-ionic surfactant @ 0.32 oz/gal water or <br />1 gt1100 gal water. <br />Spring- bud to early flower stage and/or fall rosette. <br />DO NOT apply near or under trees or where soils have rapid <br />permeability or where water level is high. Add a non-ionic <br />surfactant w 0.32oz/ al water or 1 t/100 gal water. <br />Apply to plants in the spring and summer that are in the bud to <br />flowering stage and/or to dormant plants in the fall. It is <br />pennissible to treat seasonally dry wetlands and transitional <br />areas between upland and lowland sites. DO NOT rotate to a <br />broadleaf crop within 1 year of application. Add a non-ionic <br />surfactant @ 0.32oz/gal water or I Qt/100 sat water. <br />