Spreader Section Control adds automatic section control to all fertilizer spreaders and slurry trailing-shoe or trailing-hose booms that are already equipped with manual section control. Works with and without Precision Farming.
Can be switched on and off using the T key.
It controls only the working width you have defined.
It adjusts the fertilizer application rate up or down based on speed and working width.
found a Bug? write it here https://forum.giants-software.com/viewtopic.php?t=219015

Changelog 1.1.0.0:
Detection of fertilizer spreaders adjusted — now only fertilizer spreaders and slurry booms with section control are recognized.
Working widths over 42 meters are now calculated and displayed correctly.

Changelog 1.2.0.0:
Fixed issues with maps that have their own fertilizerEffects.xml