Originally Posted by ELS Landscape
What GPM are you using when you use this boom for the 1/2 N and 1/4 K ?
Been doing my home work.
Sorry for dragging up an old thread
Calibrations are not in Gallons per minute but number of gallons per 1000sq. ft.
I generally apply 4 gallons of mix/1000sq ft. Select the proper tip to fulfill this at about 60PSIG (FERTILIZE) and higher for your herbicides at the trigger. So 100 gal tank will spray 25,000 square feet of turf with properly weighed fertilize.