Great Plains |
401-625B | 6/19/19
100
YP1225A and YP1625A
Liquid Fertilizer
Liquid Fertilizer
The liquid fertilizer option uses a CDS-John Blue
®
piston
pump. For pump operation and pump maintenance refer
to the Planter Operator Manual and CDS-John Blue
®
Pump Manual. The CDS-John Blue
®
Manual is supplied
in the liquid fertilizer option package.
The pump is driven by a ground contact wheel or
hydraulic drive. Fertilizer rate is independent of seed
rate. Fertilizer rate is set by a pump dial and a sprocket
on the ground drive assembly.
NOTE:
Great Plains recommends checking with your local
Agronomist as soil conditions vary. Soil conditions in
your area may need lesser or more amounts of fertilizer
than represented in these charts. Do not exceed
12 gallons/acre (112 liters/ha) in any case.
Setting Liquid Fertilizer Rate
Agricultural Chemical Hazard:
Some chemicals will cause serious burns, lung damage, and
death. Avoid contact with skin or eyes. Avoid prolonged
breathing of chemical fumes. Wear respirator and other
protective equipment as required by chemical manufacturer.
Seek medical assistance immediately if accident occurs. Know
what to do in case of an accident.
1. Determine the desired application rate in gallons per
acre or liters per hectare.
2. Install orifice plates appropriate for that rate.
3. Verify that the strainer mesh size is suitable for the
rate. See page 102.
4. Determine the range sprocket and pump adjuster
dial setting required for your rate. See page 103.
Configure the sprocket and dial.
5. At first use, adjust the relief valve to the suggested
initial setting. See page 102. Make further
adjustments based on pressure readings in the field.
Determine Orifice Size
The orifice needs to be small enough to create at least
15 psi of pressure in the manifold but large enough to
prevent the manifold pressure from exceeding 85 psi.
The minimum pressure is required to even out the flow of
fertilizer between rows. To reduce orifice plugging and
pump wear, use the largest orifice practical for your
fertilizer application rate.
The best pressure range to maintain is 15-to-40 psi to
ensure optimum distribution while minimizing leakage.
Orifice Size Does Not Control Rate:
Orifice size is only used to create 15-to-65 psi back pressure to
provide even flow between rows. Set application rate in
gallons per acre using pump drive chart.
Orifice
Part
Port
Port
Size
Number
Diameter
Area
20
832-052C
0.020 in
0.20 mm²
28*
832-056C
0.028 in
0.40 mm²
34*
832-053C
0.034 in
0.59 mm²
48*
832-054C
0.048 in
1.17 mm²
59 832-057C
0.059
in
1.76 mm²
80
832-055C
0.080 in
3.24 mm²
98
832-059C
0.098 in
4.87 mm²
29993
* Sizes standard in many fertilizer bundles.
Check your accessories before ordering.
