Appendix A – Broadcast Spray Calibration Tables
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 (litres per hectare, litres per 100 sq.m or litres per 10 sq.m).
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
Litres per Hectare
(based on 91cm spraying height and 4m spray pattern)
Application Rate
800
400
267
200
160
133
144
Speed To Drive
1 KM/H
2 KM/H
3 KM/H
4 KM/H
5 KM/H
6 KM/H
7 KM/H
Litres per 100 Sq.m.
(based on 91cm spraying height and 4m spray pattern)
Application Rate
8.0
4.0
2.6
2.0
1.6
1.3
1.1
Speed To Drive
1 KM/H
2 KM/H
3 KM/H
4 KM/H
5 KM/H
6 KM/H
7 KM/H
Litres per 10 Sq.m.
(based on 91cm spraying height and 4m spray pattern)
Application Rate
.80
.40
.26
.20
.16
.13
.11
Speed To Drive
1 KM/H
2 KM/H
3 KM/H
4 KM/H
5 KM/H
6 KM/H
7 KM/H
4.
Use
Table 2
to choose the throttle setting on your ATV.
TABLE 2
Speed
(KM/H)
Time required in seconds to travel a distance of:
10 m.
50 m.
100 m.
1
36
180
360
2
18
90
180
3
12
60
120
4
9
45
90
5
7
35
70
6
6
30
60
7
5
25
50
5. The coverage area can be found by dividing tank size by the application rate.
Example:
98 litres divided by 200 litres/hectare = .49 hectare of coverage per tank.
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