Anstis, L. J.2024-10-142024-10-141981-12https://hdl.handle.net/10182/17735Calibration should be carried out: - at the beginning of each season - after every 100 hectares - after changes of tractor or wheels, nozzle tips or operating pressure© NZAEIcalibrationfarm equipmentboom sprayerOther300208 Farm management, rural management and agribusiness409901 Agricultural engineering