#$%^&*AU2012201717B220140918.pdf#####5 ABSTRACT An assembly for the controlled aerial distribution of at least one chemical from at 10 least one spray nozzle, the assembly including； a boom assembly attachable to a vehicle such as an aircraft which supports the at least one nozzle and communicates between a supply of chemical and an outlet to said at least one nozzle. The assembly also includes a computer including software which receives prescription data relating to spray requirements of a location iin an area to be 15 sprayed with chemical There are also provided control means enabling spray operation of the at least one nozzle responsive to a control signal, wherein, the computer controls delivery of chemical according to the prescription data for a specific location in a spray area. 20 28
