Work out implement working width instantly with clear inputs, formula shown and shareable results.
Effective working width is the nominal width less the overlap the operator leaves to avoid strips. Overlap is unavoidable without guidance, and every centimetre of it directly wastes fuel, time and input. Width utilisation shows how much of the machine is really doing new work each pass.
Effective width
Effective width = nominal width - overlap; utilisation % = effective / nominal x 100
Passes
Passes = ceil(field width / effective width)
Manual steering on a wide boom commonly overlaps 5-10% of the width. GPS guidance cuts it to 2-3% or less, which is where most of its fuel and input saving comes from.
It wastes fuel and time in tillage, but double-spraying also risks crop damage and residue exceedances, so the cost is higher for chemicals.