Turn off sprayer on each turn. Add water to the sprayer tank. Tank should be level. Record the amount of water equal to bring water level back to original level. Calculate the rate of application.
Procedures vary for broadcast and band application.
In these cases, the width used in the calibration should be based on the row width even though only part of the row is sprayed. Adjust application is needed. If this is not the desired amount of pesticide to be applied, rate of application can be changed by changing ground speed, pressure or nozzle size. This method can be employed by staking out a test run of 100 ft. entering the test area and make the test run without spraying but measuring and recording the lapsed time. Then with a measuring device collect and record the amount from each nozzle in ounces.