Why calibrate applicators?
Calibration is the best way to ensure you are delivering the desired rate. The window of opportunity to spray for ASR is narrower than for most pests. You may not have the time to calibrate after ASR has arrived. The early spring months are the best time to thoroughly check the sprayer, select nozzle packages, and calibrate the sprayer properly. Do this before the arrival of ASR and calibrate frequently! Timely spraying is also a key to reducing potential ASR damage. Do maintenance checks on spray equipment so it will be ready when needed. Calibrate frequently! Sprayers should be calibrated several times a year. Changes in operating conditions and the type of chemical used may require a new calibration. Be prepared to spray for ASR before it arrives and have your sprayer calibrated. Use the “Ounce” calibration methods as described in Fine Tuning a Sprayer with “Ounce” Calibration Method, Virginia Cooperative Extension publication 442-453, http://pubs.ext.vt.edu/442-453/.
