The spray distribution and uniformity characteristics of 11002 flat fan nozzles type with and without air induction were evaluated in the present research. Twenty units of flat fan nozzles with and without air induction were tested in patternator table. Each one of the units was tested separately, at the 30; 40 and 50 cm above the patternator table and submitted to pressures of 300 and 500 kPa. The means of the colleted spray volume distribution of each nozzle type was evaluated and entered in a PC program. Based on the deposition patterns, distribution uniformity for nozzles spaced at 30; 40; 50 and 60 cm was simulated in PC Program. The distribution uniformity was estimated by the variation coefficient of the deposition simulated for boom with 8 meters. The PC Program simulated the distribution pattern of the boom and calculated the coefficient of variation, corresponding to each configuration. The results pointed out different deposition for each nozzle type. The nozzle with air induction resulted in lower deposition area. The behavior was observed in all the heights and two pressures. Can be inferred that behavior would be characteristic of the tip with air induction.
application technology; air induction nozzles; boom sprayer
