Efficiency (\( E_{cu} = \frac{W_{cu}}{W_d} \times 100 \)):

Where:

• \( E_{cu} \) is the consumptive use efficiency, expressed as a percentage.
• \( W_{cu} \) is the normal consumptive use of water, in cubic meters.
• \( W_d \) is the net amount of water depleted from the root-zone soil, in cubic meters.