This paper deals with the droplet sizes and spray distribuition with several types of spray nozzles and different nozzles angles. The results were obtained by flight tests using a coloured dye. It was clearly demonstrated that nozzle angle has a very great effect on droplet size and hence spray drift. Among the nozzles tested the D8 -45 with the Raindrop cap offered the greatest advantages in reducing the number of small droplet and hence the r isk of drift. Good results presented by the solid stream nozzle at 45° angle, too.
droplet size; aerial application; drift