55
NOZZLE SELECTION L/HA
BEFORE SPRAYING
See the nozzle chart on pages 61-62 to be sure
that your spray nozzles have the capacity
necessary to achieve the application rate
selected.
To select the proper nozzle, you need to know:
1. Recommended application rate in liters per
hectare.
2. Target Vehicle speed in kilometers per hour.
3. Nozzle spacing (20 inches or 50 centimeters).
With this information you can calculate the
volume per minute per nozzle, using the formulas
to the right.
L/HA
(METRIC) FORMULA:
L/min
=
L/ha x km/h x 50 cm
(Per Nozzle)
60,000
Use L/min and Pressure to select appropriate
nozzle from chart below .
EXAMPLE (
L/HA
FORMULA):
Application Rate = 910 L/hectare
Vehicle Speed = 5 km/h
Nozzle Spacing = 50 cm
910 L/ha x 5 km/h x 50 = 3.79 L/min.
60,000
(per nozzle)
With 3.79 L/min and approximate pressure at 275
kPa you would select nozzle No. 95-9188.
See the nozzle chart on pages 57-60 to be sure
that your spray nozzles have the capacity neces-
sary to achieve the application rate selected.
To select the proper nozzle, you need to know:
1. Recommended application rate in gallons per
acre or gallons per 1000 sq. ft.
2. Target Vehicle speed in Miles per hour.
3. Nozzle spacing (20 inches or 50 centimeters).
With this information you can calculate the volume
per minute per nozzle using the formulas to the
right. Then select the proper nozzle from the
following charts.
BEFORE SPRAYING
NOZZLE SELECTION GPA/GAL/1000 FT
2
EXAMPLE (
GPA
FORMULA)
Application Rate = 45 Gallons/Acre
Vehicle Speed = 4 M.P.H.
Nozzle Spacing = 20 inches
45 G.P.A. x 4 M.P.H. x 20
=
.61 G.P.M.
5940
(per nozzle)
With .61 G.P.M. and approximate pressure of 40
psi you would select Nozzle No. 95-9224.
EXAMPLE (
GAL/1000 FT
2
FORMULA):
Application Rate = 1.00 Gal./1000 sq. ft.
Vehicle Speed = 4 M.P.H.
Nozzle Spacing = 20 inches
1.00 GAL/1000 FT
2
x 4 M.P.H. x 20 = .59 G.P.M.
136 (per nozzle)
With .59 GPM and approximate pressure of 40
psi, you would select nozzle no. 95-9224.
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