Irrigation Interval (\( I_i = \frac{V}{CU} \) or \( I_i = T_{ii} + T_{ms} \)):

Where:

• \( I_i \) is the irrigation interval, in days.
• \( V \) is the net amount of water in a single irrigation, in mm.
• \( CU \) is the consumptive use, in mm/day.
• \( T_{ii} \) is the number of irrigation days within the irrigation interval, in days.
• \( T_{ms} \) is the number of days moving the system and no water applied, in days.