Spray Distribution of Boomless Nozzles: The Boomjet 5880, Radiarc and Boom Buster
Abstract. The patterns of spray distribution are described for three boomless nozzlesthat arc commonly used, or have promise, for forestry applications: The BoomJet5880 cluster nozzle (Spraying Systems Co.), the Radiarc (Waldrum specialties ), and the Boom Buster (Evergreen Products). Spray distribution patterns were determined using regularly spaced collection cups and multiple tractor passes at 2-3 mph. Modified configurations of the Radiarc produced the most even distribution pattern, while 5- to 14-fold differences in rate occurred within the pattern of the BoomJet. The Boom Buster Model 140 yielded within swath peaks that were 28-473 greater than the average. Nozzle alignment is critical when using boomless nozzles and should be checked frequently during operational treatments.