Simple Sprayer Calibration Worksheet.doc

Simple Sprayer Calibration Worksheet-Spray Smart 2007
What is the nozzle spacing (broadcast) or spray band width?
 
 
 
 
 
 
Nozzle spacing or band width
 
inches
 
 
 
Calibration distance
 
ft
 
 
 
Time to cover distance
 
1st pass
 
 
2nd pass
 
 
3rd pass
 
 
Average
 
seconds
 
 
 
Tractor and sprayer ID
 
 
 
Gear and RPM
 
 
 
 
 
Number of ounces collected
 
in time to cover distance
 
ounces
=
 
GPA
 
 
 
 
 
 

Determine the proper calibration distance from the Table
located at the bottom of the page.
Stake the distance out in the field and record the number of
seconds required to travel the distance. Repeat at least 2
times or until the time required is consistent. Also Record the
sprayer or tractor used, gear, and throttle setting (RPM).
With the tractor in neutral and at the above RPM, collect water
from the nozzles for the above number of seconds. Collect
from one nozzle for a broadcast application. Collect from all
of the nozzles spraying one row for a banded application.
Record the number of ounces of water collected. This equals
the number of gallons per acre on a broadcast basis.
Note: you should always calibrate on a broadcast basis because
rates on herbicide labels are presented as the amount of material
needed per acre on a broadcast basis.
Check the output of all