Analysis the Effect of Operating Variables of the Nozzle on Spray Volume Distribution Patterns

Transverse spray volume distribution experiments for commercially available nozzles could help technicians and applicators select correct combinations of the operating variables suitable with different field conditions. The aim of this study is to generate numerous spray patterns are suitable for different weather conditions. Spray distribution patterns from three Tee Jet nozzle sizes XR11002, XR11003 and XR11004 at three operating pressures 1, 2 and 3bar at three spray heights 0.50, 0.75, and 0.90m were generated with spray pattern analysis system (patternator). The results suggest that numerous and clear changes in the nature of the spray patterns were noted depending on operating variables. Working width values increased as operating pressure increased resulting in more uniformity of spray distribution patterns. Further, interaction of operating variables impacted spray width and volume distribution of the spray pattern. The spray peak direct under the nozzle centre decreased linearly as the nozzle height increased. The use of smaller nozzle sizes and higher operating pressure improve the spray uniformity. Correct selection of operating variables suitable to the field conditions could provide optimal and effective performance of the spray nozzle. Producing of nearly identical spray patterns from different operating variables has made the spray system easy to use in a wide range of field conditions.