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Side Trimming Frill or Girdle Treatment DO NOT side trim with Arsenal®herbicide unless severe Using a hatchet, machete, or chainsaw, make cuts through injury or death of the treated tree can be tolerated.Arsenal the bark and completely around the tree to expose the is readily translocated and can result in death of the entire cambium. The cut should angle downward extending into tree. the cambium enough to expose at least 2 growth rings. Cut-surface Treatment Using a spray applicator or brush, apply a 25%to 100% solution of Arsenal into each cut until thoroughly wet. Arsenal may be used to control undesirable woody vege- Avoid applying so much herbicide that runoff to the ground tation by applying the Arsenal solution to the cambium or water occurs. area of freshly cut stump surfaces or to fresh cuts on the stem of target woody vegetation.Application can be made Forestry Use any time of the year except during periods of heavy sap flow in the spring. DO NOT overapply solution causing Site Preparation Treatment runoff from the cut surface. Arsenal may be used to control labeled grass weeds, Injury may occur to desirable woody plants if shoots extend broadleaf weeds, vines and brambles, and woody brush from the same root system or their root systems are graft- and trees on forest sites in advance of regeneration for the ed to those of the treated tree. following conifer crop species: Cut-surface Application with Dilute and Common Name Scientific Name Rate Concentrate Solutions (fl ozs/A) Arsenal may be mixed as either a concentrate or dilute Loblolly pine Pinus taeda solution.The dilute solution may be used for application to Loblolly X pitch hybrid the cut surface of the stump or to cuts on the stem of tar- Longleaf pine Pinus palustris 48 to 80 get woody vegetation. Concentrate solutions may be used Shortleaf pine Pinus echinata for application to cuts on the stem. Use of the concentrate solution permits application to fewer cuts on the stem, Virginia pine Pinus Orginiana especially for large-diameter trees. Follow application Slash pine Pinus elliottii 40 to 64 instructions for proper application techniques for each type Coastal redwood Sequoia sempervirens of solution. Douglas fir Pseudotsuga menziesii 24 to 48 •To prepare a dilute solution, mix 8 to 12 fluid ounces of Western hemlock Tsuga heterophylla Arsenal with 1 gallon of water.A surfactant or penetrat- California red fir Abies magnifrca ing agent may improve uptake through partially callused 24 to 40 cambiums. California white fir Abies concolor •To prepare a concentrate solution, mix 2 quarts of Jack pine Pinus banksiana Arsenal with no more than 1 quart of water. Lodgepole pine Pinus contorta Cut-stump Treatment Pitch pine Pinus rigida Dilute Solution. Spray or brush the solution onto the Ponderosa pine Pinus ponderosa cambium area of the freshly cut stump surface. Ensure that Sugar pine Pinus lambertiana 24 to 32 the solution thoroughly wets the entire cambium area(the White pine Pinus strobes wood next to the bark of the stump). Black spruce Picea mariana Cut-stem Treatment Red spruce Picea rubens (injection, hack-and-squirt) White spruce Picea glauca Dilute Solution. Using standard injection equipment, apply 1 milliliter(mQ of solution at each injection site Use the label rate of Arsenal per acre applied as a broad- around the tree with no more than 1-inch intervals between cast foliar spray for long-term control of labeled woody cut edges. Ensure that the injector completely penetrates plants and residual control of herbaceous weeds.Within the bark at each injection site. 4 to 6 weeks of treatment, grass and other herbaceous Concentrate Solution.Using standard injection equip- weeds will be controlled and may provide fuel to facilitate a ment, apply 1 mL of solution at each injection site. Make at site preparation burn, if desired, to control conifers or other least 1 injection cut for every 3 inches of diameter at breast species tolerant to the herbicide. height(DBH)on the target tree. For example, a 3-inch DBH Apply the label rate of Arsenal per acre in 5 to 30 gallons tree will receive 1 injection cut, and a 6-inch DBH tree will total spray solution for helicopter applications or 5 to receive 2 injection cuts. On trees requiring more than 100 gallons total spray solution for mechanical ground 1 injection site, place the injection cuts at approximately spray and backpack applications. Use a minimum of equal intervals around the tree. 0.5% by volume nonionic surfactant(NIS), Use the higher label rates of Arsenal and higher spray volumes when 8