Improving regional adoption of weed control: a case study.

Effective control of invasive weeds such as serrated tussock (Nassella trichotoma) requires collective action by land managers across the landscape. We explored the impediments to adoption of weed control practices amongst private and public land managers, and the potential of collective action programs to overcome these impediments. A case study approach was adopted, involving serrated tussock control in two contrasting grazing regions of NSW, the Northern Tablelands and the Southern Tablelands. Although there are important barriers to adoption of serrated tussock control practices, collective action has potential to improve adoption amongst public and private land managers alike. An effective collective action program requires trust and willingness to reciprocate to develop between participants. Existing landholder networks may be employed to ensure ongoing success over the longer term. Concurrent enforcement may be required so that that non-participants also attempt to control serrated tussock on their land.