(Variable) Rate control

hi, i would like to put a motor to my fertilizer spreader for variable rate. I am thinking about the first variable rate AOG which once used a color detection to find in what zone the tractor is.


If i can import inside aog this type of map i think when my tractor enters a zone, the linear actuator could open or close the spreader lever increasing or decreasing the amount of fertilizer.
Is something like that feasible?