PERFORMANCE EVALUATION OF EMITTERS:

It is important to increase the crop yield under limited water sources for optimum crop production to meet future need of food production. Drip irrigation is popular for a plant crop because water can be applied directly to the root zone of the crop. In drip irrigation system the hydraulic performance parameters can be used for the design operation and selection of the irrigation system. A laboratory experiment was conducted to evaluate the different types of drip emitters. For the experiment the different types of inline and online emitters i.e. inline emitters Type A - 2 lph, Type B - 3 lph and Type C1 - 4 lph and online emitters Type C2 - 4 lph Pressure Compensating, Type C3 ¿ 4 lph Non Pressure Compensating, Type D1 - 8 lph Pressure Compensating, Type D2 - 8 lph Non Pressure Compensating for were used. The emitters were evaluated at varying pressure between 0.5 to 1.4 kg/cm2 with an increment of 0.1 kg/cm2. From the study it is concluded that inline and pressure compensating emitter¿s gives better uniformities .