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Page 19 of 2 3 <br />Appendix 1 <br />dicamba is very effective when applied during the early pre-bud stage (late May through early June) <br />Glyphosate at 1.5 lb. airacre applied during the flower stage will provide good control of hoary cress. <br />Picloram does not control I loaf} cress. <br />Field bindweed <br />MANAGEMENT <br />Establishment ofselected, aggressive grasses can be an eflcrlive cultural control of field bindweed. Contact <br />your local Colorado State; university Extension office or Natural Resources Conservation Service office for <br />seed mix recommendations. Good grazing management will stimulate grass growth and keep pastures <br />healthy. I lealthy pastures may he more resistant to held bindweed invasion. Bare spots caused by <br />overgrazing are prime habitat fOr eviced infestations. <br />Mechanical and Control of Field Bindweed <br />Cutting, mowing, or pulling has a negligible effect unless the plants are cut below the surface in the early <br />seedling stage. Well-established populations have a large seed bank in the soil that can remain viable for <br />over 40 years. <br />Chemical Control of Field Bin61eed <br />The following are recommendations for herbicides that can be applied to range and pasturelands. Optimum <br />results occur when the plants have recently received moisture and are actively growing <br />Application Timing/Comments <br />Spring- at or just after full-bloom <br />andior fall. <br />DO NOT apply when outside. <br />temperatures will exceed 85 <br />degrees. <br />DO NOT apply near or under <br />trees or where soils have rapid <br />+ 2.4-1) Amine I yl./acre for each product <br />or <br />I oz/gal water for each product