Read this article [ ABC today, 10 May 2013] - http://www.abc.net.au/news/2013-05-10/yamaha-uav/4681552
With a great shot of the helicopter - an unmanned Yamaha 4m long fitted with controlled droplet low volume spray rig for weed spraying serious woody weeds, in remote parts of Western Queensland.
The most interesting part is the expected usage rate of their equipment - and they are not the only supplier remember - in coming years.
They really do fill a niche in agriculture and land management.
[photo from ABC web site]
|near Camooweal, near NT / Qld border spraying prickly acacia|