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MEMO <br />Loukonen Bros. <br />Stone Company <br />Date: December 6, 2010 <br />Loukonen Bros Stone Co Weed Management Plan <br />Target Species: diffuse knapweed, Canada thistle, bull thistle, bindweed, <br />Russian thistle, yellow star thistle, puncture vine <br />Application -primary application will occur in the spring from mid April to mid <br />June for growing season control. Herbicides will be applied at <br />labeled rates for the specific weed being controlled. Application <br />will be timed to periods of favorable plant growth when the target <br />species has attained six to eight inches of new plant growth. <br />Secondary application in the fall from August to mid October will <br />be used to clean up escaped or missed plants where suppression of <br />the bolting and formation of seed heads of thistle and knapweed is <br />needed. Application will also be made to control late emergence <br />and growth of biannual thistle and knapweed rosettes. <br />Warm season weeds such as puncture vine will be sprayed from <br />July through September as needed to control different periods of <br />germination and growth. <br />Herbicides - restricted use herbicides will be avoided when practical where <br />other over-the-counter herbicides will provide adequate control or <br />suppression of the target species at the labeled rates. Herbicides <br />that may be used alone or in combination with others include but <br />are not limited to Milestone, Curtail, Touchdown, Clarity, Outlaw <br />and _other 2,4D formulations. <br />Monitoring - efficacy of applications will be determined monthly during the <br />growing season. Follow-up in September will be used to plan <br />needed application for the following year.