Calibrate, Calibrate, Calibrate!
Dr. Richard Bonanno, Extension and GAP Educator with UMass Extension Agricultural and Landscape Program, in Amherst, Massachusetts recommends careful boom and nozzle calibration.
Each spring equipment and nozzles should be calibrated using a tank of water. Spray for 30 seconds into a cup to check volume and/or drive the planned speed over paper calibration cards randomly spaces through the rows to check spray and drip patterns. [more]