Percolation Losses (\( P = \frac{(R + 1)^{n+1} - R^{n+1}}{(R + 1)^{n+1} + R^{n+1}} \times 100 \)):

Where:

• \( P \) is the percent water intake lost by deep percolation below the root zone.
• \( R \) is the time ratio.
• \( n \) is the exponent of \( t \) in the intake equation.