Product Manual

Appendix A –Broadcast Spray Calibration Tables
39
Below are some guidelines to help you calibrate your broadcast sprayer. This is a very important step in
operating the broadcast sprayer such that too much or too little chemical may be applied.
1. Using Table 1, find a table that corresponds with the chemical manufacturer's suggested application
rate (gallons per acre, gallons per 1000 sq. ft., or gallons per 100 sq. ft.).
2. Find the application rate that is closest to the chemical manufacturer's recommendations.
3. The speed to drive your tractor is listed below the application rates.
TABLE 1
Gallons per Acre (based on 36" spraying height and 14ft spray pattern)
Application Rate
49.5
36
16.5
12
10
Speed To Drive
1 MPH
2 MPH
3 MPH
4 MPH
5 MPH
Gallons per 1000 Sq.Ft. (based on 36" spraying height and 14ft spray pattern)
Application Rate
1.14
.83
.38
.28
.23
Speed To Drive
1 MPH
2 MPH
3 MPH
4 MPH
5 MPH
Gallons per 100 Sq.Ft. (based on 36" spraying height and 14ft spray pattern)
Application Rate
.114
.083
.038
.028
.023
Speed To Drive
1 MPH
2 MPH
3 MPH
4 MPH
5 MPH
4. Use Table 2 to choose the throttle setting on your tractor.
TABLE 2
5. The coverage area can be found by dividing tank size by the application rate.
Example: 55 gallons divided by 12 gallons/acre = 4.58 acre of coverage per tank.
Finding the MPH to run your vehicle for desired performance.
ACRE PER GALLONSINCHES IN WIDTHSPRAY
5940MINUTE PER GALLONS
FT 1000 PER GAL.INCHES IN WIDTHSPRAY
136MINUTE PER GALLONS
2






MPH
MPH
Speed
Time required in seconds to travel a distance of:
(MPH)
100 ft.
200 ft.
300 ft.
1
68
136
205
2
34
68
102
3
23
45
68
4
17
34
51
5
14
28
41
6
11
23
34
7
9.5
19
29