Other control methods
The methods below are used in the National Programme, but are less common.
Aerial foliar spot spraying
- Where there is safe access for trucks and machinery, mature trees can sometimes be harvested.
- The often remote and steep locations of wilding conifer stands means that harvesting is often expensive.
- The high degree of variability in trees size and quality in wilding conifer stands means harvesting is generally only practical where the costs can be covered by the sale of the logs, wood chip, firewood, or wood fibre which may be used as biofuel.
Felling to windrows
- Large trees can be felled and lain in windrows to break down on site
- Used when harvesting and transport of felled trees is not feasible, and spraying is not appropriate (this could be for a range of reasons)
- The use of controlled fire as a method of removing wilding conifers is not widely used in New Zealand, but can be used in certain circumstances, under controlled conditions – in consultation with Regional Authorities adjoining landowners and FENZ.