Delivery Rate (\( Q \)):

\[ Q = \frac{L \times 10000}{\pi \times D_e \times N \times W} \]

Where:

• \( Q \) is the delivery rate, in kg/ha.
• \( L \) is the delivery for a given \( N \), in kg.
• \( D_e \) is the effective diameter of the ground wheel under load, in meters (m).
• \( N \) is the number of revolutions, in revolutions per minute (rpm).
• \( W \) is the working width, in meters (m).