Abstract: Trials have been conducted to evaluate the performance of a novel adulticide including evaluation of drift potential. Measuring drift from the aerial release of fine sprays is an on-going challenge. The primary sampling method included rotary impactors as described at length in this community previously. Fine droplets can move over long distances in the atmosphere so positioning of samplers at distance requires logistical planning and analysis of drift potential using available mathematical models as well as field experience. Avionics assists in the positioning of the aircraft to improve targeting. The main physical variables influencing drift are generally long known but some questions remain. The possible role of sampler collection efficiency in interpreting data is examined. The role of both environmental variables and specific physical properties of the spray will also be investigated. The combination of experience and modern technology allows insight into insecticide drift not available in until recently but questions remain.
