Porosity for Medium Paddy (\( Pm \)):

\[ Pm = 69.05 - 0.885M \]

Porosity for Long Paddy (\( Pl \)):

\[ Pl = 65.55 - 0.475M \]

Where:

• \( Pm \) is the porosity for medium paddy, in percentage (%).
• \( Pl \) is the porosity for long paddy, in percentage (%).
• \( M \) is the moisture content on a wet basis, in percentage (%).