Operating instructions
403-362M Table of Contents Index 2013-03-25
62 YP2425F/YP4025F Table of Contents Index Great Plains Manufacturing, Inc.
Appendix C - Fertilizer Rate Charts
Reading the Fertilizer Rate Chart
1. Locate the chart for your planter model.
2. Find your target rate in the chart.
Note that each chart is actually two charts, a
Low Range and a High Range. The upper rates of
the Low Range overlap with the lower rates of the
High Range.
3. Determine the Final Range gearing required.
The gear tooth counts are shown on the top of
page 63. The gear change procedure is described
on page 23.
4. Note the reference Material Density used to develop
the chart, shown at the top of page 63.
If your material density is substantially different, or
you are planning to apply without calibration, perform
a density adjustment (page 66) prior to step 5.
5. Find your target fertilizer rate (which is
kilograms-per-hectare or pounds-per-acre).
6. Set the Variable Rate Gearbox control arm as
specified in the “Gearbox Setting” column. See
page 24 for setting procedure.
Note: Charts begin at setting 20 and end at 90.
Settings below 20 and above 90 are not
recommended (N/R), other than zero (0), which
may be used to temporarily shut off flow from the
meter.
7. Calibrate for your material (unless applying a
material for which you already have calibrated).
8. For the final gearbox and range, note the
Meter RPM. Set low and high rpm limits for the shaft
sensor. If using a different field speed, scale the
chart rpm by the speed ratios:
ratio = (actual ÷ chart).
7
0cm Row Spacing
n
aR hgiH )mc07( 0761-F5304PYegnaR woL )mc07( 07
6
Gearbox Meter RPM Material Rate Gearbox
ow
Spacing
egnaR hgiH )mc07( 0761-F5304PYegnaR woL )
m
G
earbox Meter RPM Material Rate Gearbox Meter R
P
S
etting at 9.7 kph kg/ha lbs/ac Setting at 9.7 k
p
00 0000
5 - N/R* N/R* 5 -
10 - N/R* N/R* 10 -
15 - N/R* N/R* 15 -
20 0.45 17 15 20 4.4
25 0.80 30 26 25 7.8
30 1.1 42 38 30 11
a
terial density
p
lication (see
Charts are based on factory standard ground drive sys-
tem sprockets, with Range determined by final gears:
Low Range: 17T Driving, 54T Driven
High Range: 54T Driving, 17T Driven.
See page 24 for gear setting.
“Meter RPM” is based on a field speed of 9.7 kph
page 26).
Charts are based on:
11-52-0 fertilizer with a density of:
0.96 kg/liter (60 pounds per cubic foot).
If your material has a significantly different density, see
“Density Adjustment” on page 64
egnaR hgiH )mc07( 0761-F5304PYegnaR w
o
b
ox Meter RPM Material Rate Gearbox Meter RPM
n
g at 9.7 kph kg/ha lbs/ac Setting at 9.7 kph
00000
- N/R* N/R* 5 -
- N/R* N/R* 10 -
- N/R* N/R* 15 -
0.45 17 15 20 4.4
0.80 30 26 25 7.8
1.1 42 38 30 11
egnaR hgiH )mc07( 0761-F5304PYegnaR
w
b
ox Meter RPM Material Rate Gearbox Meter RPM
n
g at 9.7 kph kg/ha lbs/ac Setting at 9.7 kph
00000
- N/R* N/R* 5 -
- N/R* N/R* 10 -
- N/R* N/R* 15 -
0.45 17 15 20 4.4
0.80 30 26 25 7.8