Around 40 people attended this DOC-organised meeting, mostly representing DOC, but also with a good representation from territorial authorities, land administering bodies, community groups and researchers. Arguably, it could have been the country’s largest ever gathering of operational wilding workers. The general feeling at the end of 2 days was that it was well worth attending. Notes on the day, prepared by DOC and Horizon staff, are on this site (click here for download). and a copy of the powerpoint presentation by Joseph Arund is also available (click here for download). Other material presented will be added as it is received.
The first day was spent inside listening to reports of regional and area activities, and discussing control techniques – particularly those involving herbicides. The search continues for the cheapest means of dealing with large areas of dense, closed-canopy wildings. A range of aerial herbicide trials have been installed using ‘brews’ featuring diquat, trichlopyr, glyphosate and metsulfuron in water and oil, plus a suite of additives. Results on Douglas-fir and larch have been successful, but those on the pines (usually contorta and mugo) have been far more variable – despite some impressive initial foliage ‘brown-off’. The smaller pines are not hard to eliminate, but the older the tree, the harder they are to kill completely. A summary of the current control scene relative to herbicide use is given elsewhere on this site (click here for link).