Embodiments of an equalization system include a spray system with a spray boomand aplurality of nozzles that have fluid flow measurement sensors to measure flowrate from eachnozzle or each section of nozzles for different boom configurations. Based ona comparison ofthe flow indicators to the average value, target value or reference value, adeviation from a targetnozzle outflow rate is determined. The deviation is proportionally applied toadjust pulse widthmodulated nozzle control to equalize the performance of the nozzles orsections of nozzles.
