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1 � <br /> S �� ~ <br /> Method 2—Cut Stump Treatment <br /> 1. Cut stump treatment shall be used on buckthorn with trunks greater than 1.5"measured at <br /> ground level. <br /> 2. Cut buckthorn as close as possible to ground level and mark with colored wire flag for <br /> future identification and treatment. <br /> 3. Apply glyphosate, Garlon or Rodeo chemical herbicide to cut stump surface,bark <br /> exposed above ground, and roots exposed above ground using paint brush, wick <br /> applicator or low-volume sprayer. Glyphosate, Garlon or Rodeo chemical herbicide to be <br /> minimum strength of 10.0%. <br /> Method 3 —Girdling(Frill Cutl Treatment <br /> 1. Girdling treatment may be used on buckthorn with trunks greater than 3"measured at <br /> ground leveL , � <br /> 2. Cut a frill around entire,circumference of trunk as close as possible to ground level. <br /> 3. Apply glyphosate, Garlon, or Rodeo chemical treatment to entire frill cut and adjacent <br /> bark surface using paint brush,wick applicator or low-volume sprayer. Glyphosate, <br /> Garlon or Rodeo chemical herbicide to be minimum strength of 10.0%. <br /> HERBICIDE NOTES ° <br /> Garlon and Ortho Brush-B-Gon <br /> Active ingredient is Tryclopyramine. <br /> Mix with water for cut sturnp, frill, and foliar applications. <br /> Apply immediately after cut stump and frill. <br /> Glyphosate <br /> Glyphosate is the active ingredient in Roundup. <br /> Mix with water for cut stump, frill, and foliar applications. <br /> 10 to 20% active ingredient is required for cut stump and frill methods. <br /> 3% active ingredient is required for foliar application. <br /> Apply within 24 hours of the cut stump and frill. <br /> Water based chemical. � <br /> Rodeo � � <br /> Rodeo is a glyphosate product for aquatic use. <br /> Use on plants within wetlands and within 10-ft of wetland edges. <br /> Use the same rate as outlined above for glyphosate. . <br /> �������� <br /> JAN192011 <br /> CITY OF OR�f�O <br /> COMMOM/GLOSSY BUCKTHORN CONTROL PLAN—Page 2 of 2 <br /> . Kjolhaug Environmental Services � <br /> �.. <br /> , <br />