Product Manual

Appendix A –Boom Spray Calibration Tables
32
Below are some guidelines to help you calibrate your tow behind broadcast sprayer. This is a very
important step in operating the tow behind 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 10000 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 ATV is listed below the application rates.
TABLE 1
SPRAY
HEIGHT
PRESSURE
(PSI)
GALLONS PER ACRE – based on water at 20” spacing
2 MPH
3 MPH
4 MPH
5 MPH
6 MPH
8 MPH
10 MPH
20”
30
102.5
68.3
51.2
41.0
34.2
25.6
20.5
20”
40
118.8
79.2
59.4
47.5
39.6
29.7
23.8
20”
50
132.2
88.1
66.1
52.9
44.1
33.0
26.4
SPRAY
HEIGHT
PRESSURE
(PSI)
GALLONS PER 10,000 sq.ft. – based on water at 20” spacing
2 MPH
3 MPH
4 MPH
5 MPH
6 MPH
8 MPH
10 MPH
20”
30
23.5
15.7
11.8
9.40
7.86
5.89
4.71
20”
40
27.3
18.2
13.6
10.9
9.11
6.83
5.46
20”
50
30.3
20.2
15.2
12.1
10.13
7.60
6.08
4. Use Table 2 to choose the throttle setting on your ATV.
TABLE 2
5. The coverage area can be found by dividing tank size by the application rate.
Example: 31 gallons divided by 12 gallons/acre = 2.58 acre of coverage per tank
Speed
(MPH)
Time required in seconds to travel a distance of:
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