[1] A biosecurity project has been started by CSIRO to survey the vast rainforest locations near Cairns for invasive weeds, by use of unmanned drones.
[2] The project uses sophisticated imaging technology to spot invasive “purple plague” weeds that has been a menace in the rainforest.
[3] A separate project by Queensland natural resources department aims to use Yamaha RMAX drones for spraying all known weed infestations across the state.
[Source] http://www.itnews.com.au/News/391466,csiro-drones-tackle-rainforest-weeds.aspx