Interrelationships of performance parameters for irrigation borders

The ability to determine irrigation performance parameters for a given set of hydralic variables facilitates optimum irrigation system design without requiring field trials. Relationships between several irrigation management parameters, specifically application efficiency, distribution uniformity, runoff and deep percolation, are presented. The field variables inflow, border length, time of cut-off, slope roughness and soil infiltration characteristics, are input variables for determining management parameters. They are applied through the use of dimensionless curves of runoff and equations of the ultimate distribution of infiltrated water. An example to illustrate the use of the developed relationships and dimensionless curves is included.