The aims of the present research was to investigate of the effect of the cross wind speed on the pattern of liquid spray and study the interaction between the wind speed, the height of boom, type of nozzles and nozzle pressure and their effects on the spray of pattern. The electrical axial fan of 2.2 kW was used to produce the cross wind speed of 1.2 and 3.1m s-1. The IDKN120-04, AD110-03, TT11003 Turbo Jet and ATR 208 (Albus) spray nozzles were used at different nozzle pressures. Tests were conducted in the laboratory using an experimental spray patternator with 150 collection tubes (3 meters wide) at three nozzle pressures of 300, 400 and 500 kPa for IDKN Lechler, TT11004 and Turbo Jet nozzle at wind speeds 1.2 and 3.1m s-1 of the trajectory of liquid and without wind speed (0 m s-1). The nozzle pressures for ATR208 (Albus) nozzle were 300, 400, and 500 kPa at the same wind conditions. Results indicated that the wind speed affected the uniformity of dose under laboratory conditions. The IDKN120-04 nozzle gave the low effect compared to the others nozzles.
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