ABSTRACT
In micro irrigation, fertilizers can be applied through the system with the irrigation water directly to the region where most of plants roots develop. This process is called fertigation and it is done with aid of special fertilizer apparatus injectors that is installed at head control unit of the system, before the filter. The pipes in the study were all made of polyvinyl chloride (PVC). The size of main diameter of the pipe was 75 mm. The pressure gages were installed 240 mm away from the venturi injector and the flow meter was installed 460 mm away from the venturi injector. The data were collected from the field based on the type of Venturi injector. The information from the field includes: type of Venturi injector, size of Venturi injector, inlet and outlet pressure, pump capacity, area under fertigation, type of crop under irrigation. The inlet and outlet pressures collected from field survey were used as input in the CFD analysis.
