The Objective: To compare the deposition and drift profiles of the Spectrum electrostatic system at 10 L/ ha with Micronair AU 5000 units at 30 LAia fitted to a fixed wing aircraft using fluorometric techniques.Results obtained in this experiment indicate that the electrostatics system does warrant further investigation, particularly considering that in this experiment the electrostatic system was able to deliver equivalent levels of deposition, with lower CV's and similar or less drift at application rates of 10 L/ha when compared with the micronair au5000 at 30 L/ha.

The ability of the electrostatic system to demonstrate equivalent deposition at 10 L/ha in this trial indicates that in using such a system there may be potential cost savings to growers through reduced costs of application, increased productivity and improved timeliness of application. The ability of the system to deliver equivalent deposition with similar or lower CV's and levels of drift should be investigated further.