COMPREHENSIVE EVALUATION OF DIFFERENT VERTICAL BOOM SPRAYER NOZZLES FOR

Recent research work deals with using vertical spray booms for the safe and efficient application of crop protection chemicals in greenhouses. Nozzle type and setting significantly affect spray deposition and crop nutrition and should be carefully considered. Six different types of nozzles were tested and calibrated with two operating pressures for each and different spacing between nozzles.  Wetted radius, precipitation rate, discharge were measured and calculated. Nozzle types included: Copper nozzle, Plastic nozzle with four exits, Single fogger (naandan®), Oblique nozzle, Rondo flow-regulated mini sprinkler (green) (RFR) and Rondo mist sprayer (violet). Copper nozzle was recommended for further aspects of selection and technical evaluation. It is demonstrated the best delivery of pest and the best distribution in the lap and inside the greenhouse after testing.