Ecological Assessment Report

                                                          Table 6: Weed management techniques



METHODS        DETAILS


Complete       This technique is used for plants, which regrow from bulbs, tubers or other plant parts, such as runners. Remove all plant parts, including
Removal        roots by hand pulling.
               Plant parts should be removed from the site and disposed of via landfill or composting.

Stem           This method is suitable for treating small shrubs and vines with thin and relatively soft bark tissue, which a reactively growing and not
scraping       stressed. Stem scraping or scrape and paint is perfect for treating vine species, especially Madeira Vine. The aim of this technique is to
               remove a small portion of the bark. This will allow the herbicide to penetrate into the plant’s sapwood travelling to the tubers and effectively
               destroying the plant.
               Using the knife, scrape away 100 mm to expose the sapwood. Immediately (within 15 seconds) apply the herbicide to the exposed stem.
               Failure to apply the herbicide immediately will result in the plant sealing itself off and not all the herbicide to effectively penetrate into it.

Cut Stump or   This method is a quick and effective way of treating small shrubs, large trees, woody plants and vines without aerial tubers. This method
Cut and Swab   allows accurate placement of the herbicide with minimal hazard to the environment and the operator. The intention of this method is to apply
               the herbicide to the actively growing plant sapwood. The herbicide will move through the plant into its roots and effectively kill it.
               Using the saw, machete, cane knife or secateurs, cut the plant at least 150mm above the ground. Immediately (within 15 seconds) apply
               the herbicide to the base of the stump. Failure to apply the herbicide immediately will result in the plant sea ling itself off and not all the
               herbicide to effectively penetrate into it.

Stem           This method is suitable for treating shrubs and trees with a diameter of greater than 100 mm that a reactively growing and not stressed. It
Injection      also allows accurate placement of the herbicide with minimal hazard to the environment.
               Using a drill, small axe, chisel and hammer or machete, cut downward at an angle of 45 degrees through the bark into the soft sapwood
               below. If using an axe/machete/chisel, immediately (within 15 seconds) roll the back of the blade downward, opening up a pocket in which
               to apply the herbicide mixture. Using a brush, spray or syringe, immediately (within 15 seconds) apply the herbicide mixture to the exposed
               sapwood of the cut. Note, that it is essential that cuts penetrate the bark and get through to the light sapwood underneath, otherwise
               herbicide treatment may be ineffective. Depending on the size of the tree, several cuts/injections ma y be required.




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