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.