COMPARISON OF DIFFERENT HERBICIDES FOR SINGLE STEM <em>EUCALYPTUS</em> <em>MACARTHURII</em> CUT STUMP CONTROL

Abstract

LITTLE, K. M. & VAN DEN BERG, G. J. 2007. Comparison of different herbicides for single stem Eucalyptus
macarthurii cut stump control. Many cold tolerant eucalypts, Eucalyptus macarthurii in particular, coppice
vigorously following harvesting, and in contrast to E. grandis are proving difficult to kill by existing cut
stump control methods. Based on past research, selected herbicides were tested on single stem E. macarthurii
trees that had not been coppiced in Paulpietersburg, South Africa. Triclopyr (amine salt) either alone, or
in combination with glyphosate (as a soluble concentrate, or water dispersible granule), and metsulfuronmethyl
at two different rates in combination with glyphosate (as a water dispersible granule) were tested to
determine if any of these combinations were able to kill the stumps. At the rates tested all herbicides killed
88–95% of the stumps when compared with the control (no herbicides applied). This result has important
commercial implications as it will allow forest companies the flexibility to choose herbicide combinations
based on environmental criteria, cost constraints, restriction regarding use and the registration of the
products tested.