Maximum Depth of Drip Irrigation:

\[ Idn = Ds \left( \frac{Fc - Wp}{100} \right) Dd P \]

Where:

• \(Idn\) is the maximum net depth of each irrigation application in millimeters (mm).
• \(Ds\) is the depth of soil in meters (m).
• \(Fc\) is the field capacity in percentage (%).
• \(Wp\) is the wilting point in percentage (%).
• \(Dd\) is the portion of the available moisture allowed to deplete in millimeters (mm).
• \(P\) is the area wetted as a percentage of the total area (%).