GREAT PLAINS Yield-Pro 3P3025AH User manual

© Copyright 2019 Printed 2019-04-23 411-099B
Manufacturing, Inc.
www.greatplainsmfg.com
Table of Contents
EN
ORIGINAL INSTRUCTIONS
Seed Rate Charts for the 3P3025AH
and 3P4025AH 3-Point 40 Foot
Stack-Fold Row-Hopper Yield-Pro®
Planter with Air-Pro®Seed Meters
The following pages are to assist in the proper setting of seeding
and fertilizer rates. To assure the most accurate seeding rates,
Great Plains recommends checking singulated rates and
calibrating for fertilizer application rate at the time of planting.

3P3025AH and 3P4025AH Cover Table of Contents
Great Plains | 411-099B | 4/23/19 ii
Table of Contents
Introduction.............................................................................1
Planting Overview...................................................................2
Seed Rate Setting Summary .............................................2
Seeds per Unit...................................................................2
Seed Spacing Charts.........................................................3
Meter Disk Selection..........................................................7
Meter Pressurization........................................................11
Checking Planting Rate...................................................14
Sprocket Indexing (Stagger)................................................15
Basic Indexing .................................................................15
Fine Adjustment Indexing................................................17
Hydraulic Drive Planting ......................................................21
Monitor Configuration ......................................................21
Meter RPM Limit Charts ..................................................21
Ground Drive Planting..........................................................33
Setting Ground Drives .....................................................33
Configure PM400 Monitor................................................38
Reading a Ground Drive Rate Chart ...............................39
Ground Drive Rate Charts ...............................................41
Corn..........................................................................41
Edible Bean ..............................................................63
Cotton.......................................................................73
Milo...........................................................................80
Soybean ...................................................................97
Sunflower ...............................................................103
Canola Seeding...................................................................108
Prepare Meters..............................................................108
Loading Seed ................................................................108
Canola Initial Meter Pressurization................................108
Configure PM400 Monitor .............................................108
Canola Meter RPM Limit Charts....................................109
Ground Drive Canola Rate Charts ................................111
Hill Drop Cotton ..................................................................121
Monitor Configuration ....................................................121
Hill Drop Cotton Meter RPM Limits ...............................124
Hill Drop Cotton Ground Drive Rate Charts ..................125
Volumetric Seeding ............................................................127
Prepare Meters..............................................................127
Configure Ground Drives...............................................127
Meter Pressurization .....................................................127
Configure PM400 Monitor .............................................128
Calibrate ........................................................................128
Furrow Checking Rate...................................................129
Ground Drive Volumetric Rate Charts...........................130
Appendix A - Seed Lubricants ..........................................133

3P3025AH and 3P4025AH Table of Contents Introduction
Great Plains | 411-099B | 4/23/19 1
Introduction
This manual covers the following tasks for the
3P3025AH and 4025AH planters equipped with Air-Pro®
Seed Meters:
• setting and checking seed rate for singulated crops
with population monitoring
• setting and calibrating seed rate for volumetric crops
(such as wheat) with blockage monitoring
This manual is your guide to Planter adjustments for
achieving specific seed population targets. It also
includes information you may need to properly setup and
adjust a separately provisioned fertilizer tank and pump
system.
Although some setup/adjustment material herein is
repeated from the Operator Manual, you need to be
thoroughly familiar with Planter operations and
adjustments before applying this Seed Rate Manual and
its table data.
Models Covered Document Family
29852
30-Foot
3P3025AH-0836 8-Row, 36-Inch Spacing
3P3025AH-0838 8-Row, 38-Inch Spacing
3P3025AH-0840 8-Row, 40-Inch Spacing
3P3025AH-1230 12-Row, 30-inch Spacing
3P3025AH-1270 12-Row, 70 cm Spacing
3P3025AH-1622 16-Row, 22-Inch Spacing
3P3025AH-1820 18-Row, 20-Inch Spacing
3P3025AH-2315 23-Row, 15-Inch Spacing
3P3025AH16TR36 16-Row (8 Twin), 36-Inch Spacing
3P3025AH16TR38 16-Row (8 Twin), 38-Inch Spacing
3P3025AH16TR40 16-Row (8 Twin), 40-Inch Spacing
3P3025AH24TR30 24-Row (12 Twin), 30-Inch Spacing
40-Foot
3P4025AH-1236 12-Row, 36-Inch Spacing
3P4025AH-1238 12-Row, 38-Inch Spacing
3P4025AH-1240 12-Row, 40-Inch Spacing
3P4025AH-1630 16-Row, 30-Inch Spacing
3P4025AH-24TR36 24-Row (12 Twin), 36-Inch Spacing
3P4025AH-24TR38 24-Row (12 Twin), 38-Inch Spacing
3P4025AH-24TR40 24-Row (12 Twin), 40-Inch Spacing
3P4025AH-32TR30 32-Row (16 Twin), 30-Inch Spacing
411-099M 3P4025AH Operator Manual
411-332M 3P3025AH Operator Manual
411-099B Seed Rate Charts (this document)
411-099P 3P4025AH Parts Manual
411-332P 3P3025AH Parts Manual
11001-1372 DICKEY-john®PM400 Planter Monitor
Operator’s Manual
401-909M DICKEY-john®AI-120 Quick reference Guide
110011606 DICKEY-john®AI-120 VT Manual

Great Plains | 411-099B | 4/23/19 2
3P3025AH and 3P4025AH Table of Contents Planting Overview
Planting Overview
The information in this section covers important setup
and checking information that applies to the Air-Pro®
Meter in singulated planting, using hydraulic drive or
ground drive.
Seed Rate Setting Summary
For your crop, determine your intended population,
in seeds/acre or seeds/hectare.
If you know only the seed spacing or population in
lbs/acre or kg/ha, consult the charts beginning on
this page.
For your crop, population and desired field speed,
select the correct seed disk:
see “Meter Disk Selection” on page 7
Set meter rate.
Set initial seed inlet shutter per seed rate chart.
Set initial meter pressurization:
see “Meter Pressurization” on page 11.
For staggered twin row, time row pairs using:
see “Sprocket Indexing (Stagger)” on page 15.
Configure the DICKEY-john®PM400 Seed Monitor
for the crop.
Verify your planting rate:
see “Checking Planting Rate” on page 14.
Seeds per Unit
If only population weight (lbs/acre or kg/ha) is known,
obtain the population count by multiplying the population
weight by the kernels per pound (kilogram) from the
seed container.
29626
Example: Milo
Target rate: 4.5 pounds/acre
Seed density: 14500 seeds/pound
Population:
= Rate x Density
= 4.5 x 14500, or:
65250 seeds/acre
80,000 Seed Kernels 80,000 Seed Kernels
Bag Weight per Pound Bag Weight per Pound
67.5 lbs 1,185 45.0 lbs 1,778
65.0 lbs 1,231 42.5 lbs 1,882
62.5 lbs 1,280 40.0 lbs 2,000
60.0 lbs 1,333 37.5 lbs 2,133
57.5 lbs 1,391 35.0 lbs 2,286
55.0 lbs 1,455 32.5 lbs 2,462
52.5 lbs 1,524 30.0 lbs 2,667
50.0 lbs 1,600 27.5 lbs 2,909
47.5 lbs 1,684 25.0 lbs 3,200
29649

3P3025AH and 3P4025AH Table of Contents Planting Overview
Great Plains | 411-099B | 4/23/19 3
Seed Spacing Charts
If only seed spacing is known, use the following charts to
determine population.
The following charts contain US customary and
metric units (seeds per acre and seeds per hectare,
inch and cm, etc.).
Low Range
acre hectare inch cm inch cm inch cm inch cm inch cm inch cm
14 000 34 600 20.4 51.7 14.9 37.9 12.4 31.6 11.8 29.9 11.2 28.5 16.3 41.3
15 000 37 100 19.0 48.3 13.9 35.4 11.6 29.5 11.0 28.0 10.5 26.6 15.2 38.5
16 000 39 500 17.8 45.3 13.1 33.2 10.9 27.7 10.3 26.2 9.8 24.9 14.2 36.1
17 000 42 000 16.8 42.6 12.3 31.2 10.2 26.0 9.7 24.7 9.2 23.4 13.4 34.0
18 000 44 500 15.8 40.2 11.6 29.5 9.7 24.6 9.2 23.3 8.7 22.1 12.6 32.1
19 000 46 900 15.0 38.1 11.0 28.0 9.2 23.3 8.7 22.1 8.3 21.0 12.0 30.4
20 000 49 400 14.3 36.2 10.5 26.6 8.7 22.1 8.3 21.0 7.8 19.9 11.4 28.9
21 000 51 900 13.6 34.5 10.0 25.3 8.3 21.1 7.9 20.0 7.5 19.0 10.8 27.5
22 000 54 400 13.0 32.9 9.5 24.1 7.9 20.1 7.5 19.1 7.1 18.1 10.3 26.3
23 000 56 800 12.4 31.5 9.1 23.1 7.6 19.2 7.2 18.2 6.8 17.3 9.9 25.1
24 000 59 300 11.9 30.2 8.7 22.1 7.3 18.4 6.9 17.5 6.5 16.6 9.5 24.1
25 000 61 800 11.4 29.0 8.4 21.2 7.0 17.7 6.6 16.8 6.3 15.9 9.1 23.1
26 000 64 200 11.0 27.9 8.0 20.4 6.7 17.0 6.3 16.1 6.0 15.3 8.8 22.2
27 000 66 700 10.6 26.8 7.7 19.7 6.5 16.4 6.1 15.5 5.8 14.8 8.4 21.4
28 000 69 200 10.2 25.9 7.5 19.0 6.2 15.8 5.9 15.0 5.6 14.2 8.1 20.6
29 000 71 700 9.8 25.0 7.2 18.3 6.0 15.3 5.7 14.5 5.4 13.7 7.8 19.9
30 000 74 100 9.5 24.1 7.0 17.7 5.8 14.8 5.5 14.0 5.2 13.3 7.6 19.3
31 000 76 600 9.2 23.4 6.7 17.1 5.6 14.3 5.3 13.5 5.1 12.8 7.3 18.6
32 000 79 100 8.9 22.6 6.5 16.6 5.4 13.8 5.2 13.1 4.9 12.4 7.1 18.1
33 000 81 500 8.6 21.9 6.3 16.1 5.3 13.4 5.0 12.7 4.8 12.1 6.9 17.5
34 000 84 000 8.4 21.3 6.1 15.6 5.1 13.0 4.9 12.3 4.6 11.7 6.7 17.0
35 000 86 500 8.1 20.7 6.0 15.2 5.0 12.6 4.7 12.0 4.5 11.4 6.5 16.5
36 000 89 000 7.9 20.1 5.8 14.8 4.8 12.3 4.6 11.6 4.4 11.1 6.3 16.1
37 000 91 400 7.7 19.6 5.7 14.4 4.7 12.0 4.5 11.3 4.2 10.8 6.2 15.6
38 000 93 900 7.5 19.1 5.5 14.0 4.6 11.6 4.3 11.0 4.1 10.5 6.0 15.2
39 000 96 400 7.3 18.6 5.4 13.6 4.5 11.3 4.2 10.8 4.0 10.2 5.8 14.8
40 000 98 800 7.1 18.1 5.2 13.3 4.4 11.1 4.1 10.5 3.9 10.0 5.7 14.5
41 000 101 300 7.0 17.7 5.1 13.0 4.2 10.8 4.0 10.2 3.8 9.7 5.6 14.1
42 000 103 800 6.8 17.2 5.0 12.6 4.1 10.5 3.9 10.0 3.7 9.5 5.4 13.8
43 000 106 300 6.6 16.8 4.9 12.4 4.1 10.3 3.8 9.8 3.6 9.3 5.3 13.4
44 000 108 700 6.5 16.5 4.8 12.1 4.0 10.1 3.8 9.5 3.6 9.1 5.2 13.1
45 000 111 200 6.3 16.1 4.6 11.8 3.9 9.8 3.7 9.3 3.5 8.9 5.1 12.8
46 000 113 700 6.2 15.7 4.5 11.5 3.8 9.6 3.6 9.1 3.4 8.7 4.9 12.6
47 000 116 100 6.1 15.4 4.4 11.3 3.7 9.4 3.5 8.9 3.3 8.5 4.8 12.3
48 000 118 600 5.9 15.1 4.4 11.1 3.6 9.2 3.4 8.7 3.3 8.3 4.7 12.0
49 000 121 100 5.8 14.8 4.3 10.8 3.6 9.0 3.4 8.6 3.2 8.1 4.6 11.8
50 000 123 500 5.7 14.5 4.2 10.6 3.5 8.9 3.3 8.4 3.1 8.0 4.6 11.6
68261N
seeds per
Plant Population 22in Rows
(55.9cm Rows)
30in Rows
(76.2cm Rows)
36in Rows
(91.4cm Rows)
38in Rows
(96.5cm Rows)
40in Rows
(101.6cm Rows) 70cm Rows

Great Plains | 411-099B | 4/23/19 4
3P3025AH and 3P4025AH Table of Contents Planting Overview
Seed Spacing Charts (cont’d)
Low Range
acre hectare inch cm inch cm inch cm inch cm
14 000 34 600 29.9 75.9 24.9 63.2 23.6 59.9 22.4 56.9
15 000 37 100 27.9 70.8 23.2 59.0 22.0 55.9 20.9 53.1
16 000 39 500 26.1 66.4 21.8 55.3 20.6 52.4 19.6 49.8
17 000 42 000 24.6 62.5 20.5 52.1 19.4 49.3 18.4 46.9
18 000 44 500 23.2 59.0 19.4 49.2 18.3 46.6 17.4 44.3
19 000 46 900 22.0 55.9 18.3 46.6 17.4 44.1 16.5 41.9
20 000 49 400 20.9 53.1 17.4 44.3 16.5 41.9 15.7 39.8
21 000 51 900 19.9 50.6 16.6 42.1 15.7 39.9 14.9 37.9
22 000 54 400 19.0 48.3 15.8 40.2 15.0 38.1 14.3 36.2
23 000 56 800 18.2 46.2 15.2 38.5 14.4 36.5 13.6 34.6
24 000 59 300 17.4 44.3 14.5 36.9 13.8 34.9 13.1 33.2
25 000 61 800 16.7 42.5 13.9 35.4 13.2 33.5 12.5 31.9
26 000 64 200 16.1 40.9 13.4 34.0 12.7 32.3 12.1 30.6
27 000 66 700 15.5 39.3 12.9 32.8 12.2 31.1 11.6 29.5
28 000 69 200 14.9 37.9 12.4 31.6 11.8 29.9 11.2 28.5
29 000 71 700 14.4 36.6 12.0 30.5 11.4 28.9 10.8 27.5
30 000 74 100 13.9 35.4 11.6 29.5 11.0 28.0 10.5 26.6
31 000 76 600 13.5 34.3 11.2 28.6 10.6 27.1 10.1 25.7
32 000 79 100 13.1 33.2 10.9 27.7 10.3 26.2 9.8 24.9
33 000 81 500 12.7 32.2 10.6 26.8 10.0 25.4 9.5 24.1
34 000 84 000 12.3 31.2 10.2 26.0 9.7 24.7 9.2 23.4
35 000 86 500 11.9 30.3 10.0 25.3 9.4 24.0 9.0 22.8
36 000 89 000 11.6 29.5 9.7 24.6 9.2 23.3 8.7 22.1
37 000 91 400 11.3 28.7 9.4 23.9 8.9 22.7 8.5 21.5
38 000 93 900 11.0 28.0 9.2 23.3 8.7 22.1 8.3 21.0
39 000 96 400 10.7 27.2 8.9 22.7 8.5 21.5 8.0 20.4
40 000 98 800 10.5 26.6 8.7 22.1 8.3 21.0 7.8 19.9
41 000 101 300 10.2 25.9 8.5 21.6 8.1 20.5 7.6 19.4
42 000 103 800 10.0 25.3 8.3 21.1 7.9 20.0 7.5 19.0
43 000 106 300 9.7 24.7 8.1 20.6 7.7 19.5 7.3 18.5
44 000 108 700 9.5 24.1 7.9 20.1 7.5 19.1 7.1 18.1
45 000 111 200 9.3 23.6 7.7 19.7 7.3 18.6 7.0 17.7
46 000 113 700 9.1 23.1 7.6 19.2 7.2 18.2 6.8 17.3
47 000 116 100 8.9 22.6 7.4 18.8 7.0 17.8 6.7 16.9
48 000 118 600 8.7 22.1 7.3 18.4 6.9 17.5 6.5 16.6
49 000 121 100 8.5 21.7 7.1 18.1 6.7 17.1 6.4 16.3
50 000 123 500 8.4 21.2 7.0 17.7 6.6 16.8 6.3 15.9
68261P
seeds per
15in Rows
(38.1in Rows)
20in Rows
(50.8cm Rows)
Plant Population
Twin Row 30in
(Twin Row 76.2cm) Twin Row 36in
(Twin Row 91.4cm)
Twin Row 38in
(Twin Row 96.5)
Twin Row 40in
(Twin Row 101.6cm)

3P3025AH and 3P4025AH Table of Contents Planting Overview
Great Plains | 411-099B | 4/23/19 5
Seed Spacing Charts (cont’d)
High Range
acre hectare inch cm inch cm inch cm inch cm inch cm inch cm
50 000 123 500 5.7 14.5 4.2 10.6 3.5 8.9 3.3 8.4 3.1 8.0 4.6 11.6
55 000 135 900 5.2 13.2 3.8 9.7 3.2 8.0 3.0 7.6 2.9 7.2 4.1 10.5
60 000 148 300 4.8 12.1 3.5 8.9 2.9 7.4 2.8 7.0 2.6 6.6 3.8 9.6
65 000 160 600 4.4 11.1 3.2 8.2 2.7 6.8 2.5 6.5 2.4 6.1 3.5 8.9
70 000 173 000 4.1 10.3 3.0 7.6 2.5 6.3 2.4 6.0 2.2 5.7 3.3 8.3
75 000 185 300 3.8 9.7 2.8 7.1 2.3 5.9 2.2 5.6 2.1 5.3 3.0 7.7
80 000 197 700 3.6 9.1 2.6 6.6 2.2 5.5 2.1 5.2 2.0 5.0 2.8 7.2
85 000 210 000 3.4 8.5 2.5 6.2 2.0 5.2 1.9 4.9 1.8 4.7 2.7 6.8
90 000 222 400 3.2 8.0 2.3 5.9 1.9 4.9 1.8 4.7 1.7 4.4 2.5 6.4
95 000 234 700 3.0 7.6 2.2 5.6 1.8 4.7 1.7 4.4 1.7 4.2 2.4 6.1
100 000 247 100 2.9 7.2 2.1 5.3 1.7 4.4 1.7 4.2 1.6 4.0 2.3 5.8
105 000 259 500 2.7 6.9 2.0 5.1 1.7 4.2 1.6 4.0 1.5 3.8 2.2 5.5
110 000 271 800 2.6 6.6 1.9 4.8 1.6 4.0 1.5 3.8 1.4 3.6 2.1 5.3
115 000 284 200 2.5 6.3 1.8 4.6 1.5 3.8 1.4 3.6 1.4 3.5 2.0 5.0
120 000 296 500 2.4 6.0 1.7 4.4 1.5 3.7 1.4 3.5 1.3 3.3 1.9 4.8
125 000 308 900 2.3 5.8 1.7 4.2 1.4 3.5 1.3 3.4 1.3 3.2 1.8 4.6
130 000 321 200 2.2 5.6 1.6 4.1 1.3 3.4 1.3 3.2 1.2 3.1 1.8 4.4
135 000 333 600 2.1 5.4 1.5 3.9 1.3 3.3 1.2 3.1 1.2 3.0 1.7 4.3
140 000 345 900 2.0 5.2 1.5 3.8 1.2 3.2 1.2 3.0 1.1 2.8 1.6 4.1
145 000 358 300 2.0 5.0 1.4 3.7 1.2 3.1 1.1 2.9 1.1 2.7 1.6 4.0
150 000 370 600 1.9 4.8 1.4 3.5 1.2 3.0 1.1 2.8 1.0 2.7 1.5 3.9
155 000 383 000 1.8 4.7 1.3 3.4 1.1 2.9 1.1 2.7 1.0 2.6 1.5 3.7
160 000 395 400 1.8 4.5 1.3 3.3 1.1 2.8 1.0 2.6 1.0 2.5 1.4 3.6
165 000 407 700 1.7 4.4 1.3 3.2 1.1 2.7 1.0 2.5 1.0 2.4 1.4 3.5
170 000 420 100 1.7 4.3 1.2 3.1 1.0 2.6 1.0 2.5 0.9 2.3 1.3 3.4
175 000 432 400 1.6 4.1 1.2 3.0 1.0 2.5 0.9 2.4 0.9 2.3 1.3 3.3
180 000 444 800 1.6 4.0 1.2 3.0 1.0 2.5 0.9 2.3 0.9 2.2 1.3 3.2
185 000 457 100 1.5 3.9 1.1 2.9 0.9 2.4 0.9 2.3 0.8 2.2 1.2 3.1
190 000 469 500 1.5 3.8 1.1 2.8 0.9 2.3 0.9 2.2 0.8 2.1 1.2 3.0
195 000 481 800 1.5 3.7 1.1 2.7 0.9 2.3 0.8 2.2 0.8 2.0 1.2 3.0
200 000 494 200 1.4 3.6 1.0 2.7 0.9 2.2 0.8 2.1 0.8 2.0 1.1 2.9
225 000 556 000 1.3 3.2 0.9 2.4 0.8 2.0 0.7 1.9 0.7 1.8 1.0 2.6
250 000 617 700 1.1 2.9 0.8 2.1 0.7 1.8 0.7 1.7 0.6 1.6 0.9 2.3
275 000 679 500 1.0 2.6 0.8 1.9 0.6 1.6 0.6 1.5 0.6 1.4 0.8 2.1
300 000 741 300 1.0 2.4 0.7 1.8 0.6 1.5 0.6 1.4 0.5 1.3 0.8 1.9
68261Q
seeds per
Plant Population 22in Rows
(55.9cm Rows)
30in Rows
(76.2cm Rows)
36in Rows
(91.4cm Rows)
38in Rows
(96.5cm Rows)
40in Rows
(101.6cm Rows) 70cm Rows

Great Plains | 411-099B | 4/23/19 6
3P3025AH and 3P4025AH Table of Contents Planting Overview
Seed Spacing Charts (cont’d)
High Range
acre hectare inch cm inch cm inch cm inch cm
50 000 123 500 8.4 21.2 7.0 17.7 6.6 16.8 6.3 15.9
55 000 135 900 7.6 19.3 6.3 16.1 6.0 15.2 5.7 14.5
60 000 148 300 7.0 17.7 5.8 14.8 5.5 14.0 5.2 13.3
65 000 160 600 6.4 16.3 5.4 13.6 5.1 12.9 4.8 12.3
70 000 173 000 6.0 15.2 5.0 12.6 4.7 12.0 4.5 11.4
75 000 185 300 5.6 14.2 4.6 11.8 4.4 11.2 4.2 10.6
80 000 197 700 5.2 13.3 4.4 11.1 4.1 10.5 3.9 10.0
85 000 210 000 4.9 12.5 4.1 10.4 3.9 9.9 3.7 9.4
90 000 222 400 4.6 11.8 3.9 9.8 3.7 9.3 3.5 8.9
95 000 234 700 4.4 11.2 3.7 9.3 3.5 8.8 3.3 8.4
100 000 247 100 4.2 10.6 3.5 8.9 3.3 8.4 3.1 8.0
105 000 259 500 4.0 10.1 3.3 8.4 3.1 8.0 3.0 7.6
110 000 271 800 3.8 9.7 3.2 8.0 3.0 7.6 2.9 7.2
115 000 284 200 3.6 9.2 3.0 7.7 2.9 7.3 2.7 6.9
120 000 296 500 3.5 8.9 2.9 7.4 2.8 7.0 2.6 6.6
125 000 308 900 3.3 8.5 2.8 7.1 2.6 6.7 2.5 6.4
130 000 321 200 3.2 8.2 2.7 6.8 2.5 6.5 2.4 6.1
135 000 333 600 3.1 7.9 2.6 6.6 2.4 6.2 2.3 5.9
140 000 345 900 3.0 7.6 2.5 6.3 2.4 6.0 2.2 5.7
145 000 358 300 2.9 7.3 2.4 6.1 2.3 5.8 2.2 5.5
150 000 370 600 2.8 7.1 2.3 5.9 2.2 5.6 2.1 5.3
155 000 383 000 2.7 6.9 2.2 5.7 2.1 5.4 2.0 5.1
160 000 395 400 2.6 6.6 2.2 5.5 2.1 5.2 2.0 5.0
165 000 407 700 2.5 6.4 2.1 5.4 2.0 5.1 1.9 4.8
170 000 420 100 2.5 6.2 2.0 5.2 1.9 4.9 1.8 4.7
175 000 432 400 2.4 6.1 2.0 5.1 1.9 4.8 1.8 4.6
180 000 444 800 2.3 5.9 1.9 4.9 1.8 4.7 1.7 4.4
185 000 457 100 2.3 5.7 1.9 4.8 1.8 4.5 1.7 4.3
190 000 469 500 2.2 5.6 1.8 4.7 1.7 4.4 1.7 4.2
195 000 481 800 2.1 5.4 1.8 4.5 1.7 4.3 1.6 4.1
200 000 494 200 2.1 5.3 1.7 4.4 1.7 4.2 1.6 4.0
225 000 556 000 1.9 4.7 1.5 3.9 1.5 3.7 1.4 3.5
250 000 617 700 1.7 4.2 1.4 3.5 1.3 3.4 1.3 3.2
275 000 679 500 1.5 3.9 1.3 3.2 1.2 3.0 1.1 2.9
300 000 741 300 1.4 3.5 1.2 3.0 1.1 2.8 1.0 2.7
68261R
seeds per
15in Rows
(38.1in Rows)
20in Rows
(50.8cm Rows)
Plant Population
Twin Row 30in
(Twin Row 76.2cm)
Twin Row 36in
(Twin Row 91.4cm)
Twin Row 38in
(Twin Row 96.5)
Twin Row 40in
(Twin Row 101.6cm)

3P3025AH and 3P4025AH Table of Contents Planting Overview
Great Plains | 411-099B | 4/23/19 7
Meter Disk Selection
Seed Size Recommendations Seeds/lb Seeds/kg
Corn Round Large 2865 (or fewer)
Corn Round Med 2865 to 4410
Corn Round Small 4410 (or more)
Corn Flat Large 3640 (or fewer)
Corn Flat Small 3640 (or more)
ATTENTION: This Corn is planted with the Corn Round Small Disks!!!!!!
Recommended
24 Cell Disk
40 Cell Disk
24 Cell Disk
40 Cell Disk
24 Cell Disk
40 Cell Disk
30 in (76.2 cm) Rows 24 Cell Disk
75 cm Rows 40 Cell Disk
24 Cell Disk
40 Cell Disk
24 Cell Disk
40 Cell Disk
Twin Row 40 in (101.6 cm) 24 Cell Disk
20 in (50.8cm) Rows 40 Cell Disk
24 Cell Disk
40 Cell Disk
24 Cell Disk
40 Cell Disk
Twin Row 30 in (76.2 cm) 24 Cell Disk
15 in (38.1 cm Rows) 40 Cell Disk
24 Cell Disk
40 Cell Disk
24 Cell Disk
40 Cell Disk
68251A
70 cm Rows
22 in (55.9 cm) Rows
ATTENTION: This disk is for Hopper Style Planters only. Do not use with an Air Delivery type planter.
Twin Row 38 in (96.5 cm)
Twin Row 36 in (91.4cm)
Twin Row 70 cm
Twin Row 20 in (50.8 cm)
10 in (25.4 cm) Rows
This disk should plant medium peanuts.
Below 51 800
Above 51 800
Below 77 700
Above 77 700
Below 129 000
Above 129 000
Below 192 100
Above 192 100
( Sweet Corn plants in Round Corn disks )
Unit Weight
40 in (101.6 cm) Rows
38 in (96.5 cm) Rows
36 in (91.4 cm) Rows
1300 (or fewer) 61.5 lb (or heavier)
1300 to 2000 61.5 to 40 pounds
Below 21 600 Below 53 400
Seeds/acre @ 5.5 mph Seeds/ha @ 8.9 kph
2000 (or more) 40 pounds (or lighter)
1650 (or fewer)
837 - 126C Corn Round Med 837 - 127C Corn Round Med
817 - 795C Corn Round Small 817 - 797C Corn Round Small
817 - 836C Corn Flat Large 817 - 838C Corn Flat Large
CORN CORN
24 Cell Disk 40 Cell Disk
817 - 794C Corn Round Large 817 - 796C Corn Round Large
48.5 pounds (or heavier)
1650 (or more) 48.5 pounds (or lighter)
Below 19 400 Below 52 500
Above 19 400 Above 29 200
Below 20 500 Below 50 600
Above 21 600 Above 53 400
Above 20 500 Above 50 600
Below 25 900 Below 64 000
Above 25 900 Above 64 000
Above 38 900 Above 96 100
Below 28 200 Below 69 700
Above 28 200 Above 69 700
Below 38 900 Below 96 100
Below 35 300 Below 87 300
Above 35 300 Above 87 300
Above 43 200 Above 106 700
Below 40 900 Below 101 000
Above 40 900 Above 101 000
Below 43 200 Below 106 700
( a smaller bean ) ( a smaller bean )
Below 56 400 Below 139 400
Above 56 400 Above 139 400
Medium Edible Bean
60 Cell Disk
837 - 065C
Seed Size Recommendations
1000 seeds per pound or more 2200 seeds per kg or more

Great Plains | 411-099B | 4/23/19 8
3P3025AH and 3P4025AH Table of Contents Planting Overview
Meter Disk Selection (cont’d)
150 Cell Disk 250 Cell Disk
837 - 148C Seed Size Recommendations 817 - 991C
Recommended
Below 48 300 Below 119 300 30 Cell Disk
Above 48 300 Above 119 300 65 Cell Disk
Below 50 800 Below 125 500 30 Cell Disk
Above 50 800 Above 125 500 65 Cell Disk
Below 53 600 Below 132 500 30 Cell Disk
Above 53 600 Above 132 500 65 Cell Disk
30 in (76.2 cm) Rows Below 64 300 Below 159 000 30 Cell Disk
75 cm Rows Above 64 300 Above 159 000 65 Cell Disk
Below 70 100 Below 173 100 30 Cell Disk
Above 70 100 Above 173 100 65 Cell Disk
Below 87 700 Below 216 800 30 Cell Disk
Above 87 700 Above 216 800 65 Cell Disk
Twin Row 40 in (101.6 cm) Below 96 500 Below 238 500 30 Cell Disk
20 in (50.8 cm) Rows Above 96 500 Above 238 500 65 Cell Disk
Below 24 000 Below 58 000 30 Cell Disk
Below 128 700 Below 318 000 65 Cell Disk
Above 128 700 Above 318 000 130 Cell Disk
Below 25 100 Below 62 000 30 Cell Disk
Below 140 100 Below 346 200 65 Cell Disk
Above 140 100 Above 346 200 130 Cell Disk
Below 34 000 Below 84 000 30 Cell Disk
Below 193 000 Below 477 000 65 Cell Disk
Above 193 000 Above 477 000 130 Cell Disk
68251B
36 in (91.4 cm) Rows
ATTENTION: This disk is for Hopper Style Planters only. Do not use with an Air Delivery type planter.
70 cm Rows
22 in (55.9 cm) Rows
Twin Row 30 in (76.2 cm)
15 in (38.1 cm) Rows
130 Cell Disk
837 - 057C 817 - 849C 817 - 800C
MILO / PELLETIZED SUGAR BEET
This disk should plant all seed sizes and row spacings for Canola & Mustard
CANOLA
COTTON
60 Cell Disk
817 - 857C
Seed Size Recommendations
Twin Row 70 cm
35 cm Rows
Twin Row 20 in (50.8 cm)
10 in (25.4 cm) Rows
Large Edible Bean
56 Cell Disk
817 - 967C
Seed Size Recommendations
1000 seeds per pound or fewer 2200 seeds per kg or fewer
( a larger bean ) ( a larger bean )
Population @ 6 mph Population @ 9.7 kph Recommended
This disk should plant medium peanuts.
30 Cell Disk 65 Cell Disk
This disk should plant all seed sizes and row spacings for Cotton.
Below 125 000
Above 125 000
Below 200 000 150 Cell Disk
Above 200 000 250 Cell Disk
38 in (96.5 cm) Rows
Seed Size Recommendations
These disks should plant all seed sizes of Milo, Pelletized Sugar Beets & Tillage Radish
Seeds/acre @ 6 mph Seeds/ha @ 9.7 kph
40 in (101.6 cm) Rows

3P3025AH and 3P4025AH Table of Contents Planting Overview
Great Plains | 411-099B | 4/23/19 9
Meter Disk Selection (cont’d)
84 Cell Disk ( Small Edible Beans) 168 Cell Disk
817 - 798C 403 - 551D
Recommended
Below 76 900 Below 190 100 84 Cell Disk
Above 76 900 Above 190 100 168 Cell Disk
Below 81 000 Below 200 100 84 Cell Disk
Above 81 000 Above 200 100 168 Cell Disk
Below 85 500 Below 211 200 84 Cell Disk
Above 85 500 Above 211 200 168 Cell Disk
30 in (76.2 cm) Rows Below 102 500 Below 253 400 84 Cell Disk
75 cm Rows Above 102 500 Above 253 400 168 Cell Disk
Below 111 600 Below 275 900 84 Cell Disk
Above 111 600 Above 275 900 168 Cell Disk
Below 139 800 Below 345 600 84 Cell Disk
Above 139 800 Above 345 600 168 Cell Disk
Twin Row 40 in (101.6 cm) Below 153 800 Below 380 100 84 Cell Disk
20 in (50.8 cm) Rows Above 153 800 Above 380 100 168 Cell Disk
Below 161 900 Below 400 200 84 Cell Disk
Above 161 900 Above 400 200 168 Cell Disk
Below 170 900 Below 422 400 84 Cell Disk
Above 170 900 Above 422 400 168 Cell Disk
Below 205 100 Below 506 900 84 Cell Disk
Above 205 100 Above 506 900 168 Cell Disk
Below 223 300 Below 551 800 84 Cell Disk
Above 223 300 Above 551 800 168 Cell Disk
Below 307 700 Below 760 300 84 Cell Disk
Above 307 700 Above 760 300 168 Cell Disk
Sunflower Oil Small
Sunflower Oil Medium
Sunflower Oil Large Seeds/kg Popcorn
2's - most 3's 9 900 (or fewer) This disk should plant all
And a few of the larger 4's seed sizes of Popcorn.
68251C
Available for:
Wheat
Rice
Only available on 2525A on 9.5 in rows, and YP30AR or YP40AR on 10 in rows.
Rice takes a special hardened meter.
24 Cell Disk
817 - 851C
Seed Size Recommendations
Volumetric No.1 84 Cell Disk
817 - 867C
Seeds/lb
4 500 (or fewer)
SOYBEAN
Seeds/ha @ 9.7 kph
Small edible beans (navy, black jack, black eye peas, etc) will plant with this disk also.
Seeds/acre @ 6 mph
Seed Size Recommendations
These disks should plant all seed sizes of Soybeans.
SUNFLOWER OIL LARGE / POPCORN
40 in (101.6 cm) Rows
38 in (96.5 cm) Rows
36 in (91.4 cm) Rows
70 cm Rows
22 in (55.9 cm) Rows
Twin Row 38 in (96.5 cm)
Twin Row 36 in (91.4 cm)
Twin Row 30 in (76.2 cm)
15in (38.1 cm) Rows
Twin Row 70 cm
35 cm Rows
Twin Row 20 in (50.8 cm)
10 in (25.4 cm) Rows
SUNFLOWER OIL SMALL / MEDIUM
ATTENTION: This disk is for Hopper Style Planters only. Do not use with an Air Delivery type planter.
ATTENTION: This disk is for Hopper Style Planters only. Do not use with an Air Delivery type planter.
6 500 - 8 500 Seeds per Pound
14 300 - 18 700 Seeds per Kilogram
60 CELL DISK
837-234C SMALL
60 CELL DISK
837-235C MEDIUM
9 900 - 14 300 Seeds per Kilogram
4 500 - 6 500 Seeds per Pound

Great Plains | 411-099B | 4/23/19 10
3P3025AH and 3P4025AH Table of Contents Planting Overview
Meter Disk Selection (cont’d)

3P3025AH and 3P4025AH Table of Contents Planting Overview
Great Plains | 411-099B | 4/23/19 11
Meter Pressurization
Refer to the Operator Manual for the procedure for fine tuning meter pressurization.
Start with pressures from the charts, which are based on crop, and for corn, seed shape and density.
NOTE:
These are suggested initial (starting) pressures. Use the seed monitor console to adjust the value up or down according to the
Operator Manual.
Corn Initial Meter Pressurization
Initial seed inlet Shutter for corn is: 3
1. Pick the chart based on seed shape (flat, round).
2. Pick a line based on seed size (large, small).
3. Find the seed density on the bottom scale.
4. Read the suggested starting pressure on the left scale where the line intersects the density.
US Customary Units
Example: large round corn, 1260 seeds/lb (seed density)
Use the line on the right of the chart, under “Round Corn-Large” (based on the seed size).
Initial meter pressurization is 3.4 inches of water
The example is shown as dotted gray lines on the chart below.
Round Corn
29725
Round Corn (U.S. Customary Units)
Pressure/Seed Comparison
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
900
11001300
150017001900
2100
23002500
27002900
3100
Seeds Per Pound
Unit Weight (80K)
Linear (Round Corn Large)
Linear (Round Corn Small)
Meter Pressure (in/water)
5
4.5
3.5
3
2.5
2
1.5
1
0.5
0
88.9
72.761.5
53.347.142.138.134.832.0
29.627.6
25.8
4
817-794C & 817-796C
Round Corn-Large
817-795C & 817-797C
Round Corn-Small
Meter Pressure (in/water)
Disks
Disks
Example
Example
Meter Pressurization in inches of Water
Meter Pressurization in inches of Water
29725

Great Plains | 411-099B | 4/23/19 12
3P3025AH and 3P4025AH Table of Contents Planting Overview
Flat Corn
29726
Flat Corn (U.S. Customary Units)
Pressure/Seed Comparison
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
90011001300150017001900
2100
230025002700
2900
3100
Seeds Per Pound
Unit Weight (80K)
Meter Pressure (in/water)
Linear (Flat Corn Large)
Linear (Flat Corn Small)
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
88.9
72.7
61.5
53.3
47.142.1
38.134.832.029.627.625.8
817-836C & 817-838C
Flat Corn-Large
817-795C & 817-797C
Flat Corn-Small
Meter Pressure (in/water)
Disks
Disks
Meter Pressurization in inches of Water
Meter Pressurization in inches of Water
29726

3P3025AH and 3P4025AH Table of Contents Planting Overview
Great Plains | 411-099B | 4/23/19 13
Metric Units
Example: large round corn, 2800 seeds/kg (seed density)
Use the line on the right of the chart, under “Round Corn-Large” (based on the seed size).
Initial meter pressurization is 3.4 inches of water
The example is shown as dotted gray lines on the chart below.
Round Corn
Flat Corn
Pressure/Seed Comparison
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
900
11001300
150017001900
2100
23002500
27002900
3100
Linear (Round Corn Large)
Linear (Round Corn Small)
Meter Pressure (in/water)
5
4.5
3.5
3
2.5
2
1.5
1
0.5
0
88.9
72.761.5
53.347.142.138.134.832.0
29.627.6
25.8
4817-794C & 817-796C
Round Corn-Large
817-795C & 817-797C
Round Corn-Small
Meter Pressure (in/water)
Disks
Disks
Example
Example
68006400 60005500 5100 4600 4200 3700 3300 2900 2400 2000
Seeds Per Kilogram 29725
Meter Pressurization in inches of Water
Meter Pressurization in inches of Water
Pressure/Seed Comparison
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
90011001300150017001900
2100
230025002700
2900
3100
Meter Pressure (in/water)
Linear (Flat Corn Large)
Linear (Flat Corn Small)
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
88.9
72.7
61.5
53.3
47.142.1
38.134.832.029.627.625.8
817-836C & 817-838C
Flat Corn-Large
817-795C & 817-797C
Flat Corn-Small
Meter Pressure (in/water)
Disks
Disks
29726
68006400 60005500 5100 4600 4200 3700 3300 2900 2400 2000
Seeds Per Kilogram
Meter Pressurization in inches of Water
Meter Pressurization in inches of Water

Great Plains | 411-099B | 4/23/19 14
3P3025AH and 3P4025AH Table of Contents Planting Overview
Medium and Large Edible Bean Initial Meter
Pressurization
2.75 inches of water (any seed density)
Initial seed inlet Shutter: 3
Cotton Initial Meter Pressurization
1.5 inches of water (any seed density)
Initial seed inlet Shutter: 2
Milo Initial Meter Pressurization
1.5 inches of water (all disk, any seed density)
Initial seed inlet Shutter: 2
Soybeans Initial Meter Pressurization
2.0 inches of water (84 cell disk, any seed density)
3.0 inches of water (168 cell disk, any seed density)
Initial seed inlet Shutter: 2
Sunflower Initial Meter Pressurization
1.25 inches of water
8500 to 7000 seeds/lb (18 700 to 15 400 seeds/kg)
1.75 inches of water
7000 to 5500 seeds/lb (15 400 to 12 100 seeds/kg)
2.25 inches of water
5500 and less seeds/lb (12 100 and less seeds/kg)
Adjust pressure as needed for desired population.
Initial seed inlet Shutter: 2
Checking Planting Rate
Singulated seed charts are based on cleaned and sized
seed singulated with the recommended disk. Extreme
seed size variations, foreign material, tire pressure and
soil conditions can affect the planting rate.
Any material difference between chart and field rates
implies a mechanical malfunction, a Planter setup error,
unsuitable planting conditions (such as excessive tire
slippage) or extremely worn Planter components. Verify
your setup and Planter performance by measuring seed
placement and spacing over a relatively short distance.
1. Determine the sample distance to check. Find your
row spacing in the following table.
2. Note the number of rows to sample. Adjust the
planting depth to a shallow setting on one or two
outside rows (per table). Tie up the press wheel arms
with wire or bungee to prevent furrow closure.
3. Load seed only in rows to be tested, or close seed
inlet shutters in other rows if seed is already loaded.
4. For populations above 100 000 seeds/acre, use a
sample size of 1/1000th acre.
For populations below 100 000 seeds/acre, use a
sample size of 1/200th acre.
5. Configure the Planter for the chart rate using the
chart settings for sprockets.
6. Plant at the desired planting speed for slightly more
than the computed sample run length.
7. Measure off the sample distance, balanced in
between where seeding started and stopped.
8. Count the number of seeds over the distance
measured. Also note the consistency of the seed
spacing.
9. Compute the rate for a full acre or hectare.
For a 1/1000th sample, multiply the counted seeds
by 1000.
For a 1/200th sample, multiply the counted seeds by
200.
10. If the field and chart rates vary by more than a few
percent, re-check Planter setup, including meter disk
or cell count, air system, tire size, tire pressures,
sprocket setup, chain slack, etc. If seed spacing is
irregular, this suggests a seed delivery problem, and
not a rate setup problem.
11. While planting, pay attention to the seed monitor. In
addition to confirming the single-row furrow check, it
will also provide field rate data on all the other rows,
and alert you to any irregularities or stoppages.
Row Row 1/1000th 1/200th 1/1000th
Spacing Count Acre Acre Hectare
15in Single 2 17ft 5in 87ft 1in 13.12 m
20in Single 1 26ft 2in 130ft 8in 19.69 m
22in Single 1 23ft 9in 118ft 10in 17.90 m
70cm Single 1 18ft 2in 94ft 10in 14.29 m
30in Single 1 17ft 5in 87ft 1in 13.12 m
36in Single 1 14ft 6in 72ft 7in 10.94 m
38in Single 1 13ft 9in 68ft 9in 10.36 m
40in Single 1 13ft 1in 65ft 4in 9.84 m
30in Twin 1 pair 17ft 5in 87ft 1in 6.56 m
36in Twin 1 pair 14ft 6in 72ft 7in 5.47 m
38in Twin 1 pair 13ft 9in 68ft 9in 5.18 m
40in Twin 1 pair 13ft 1in 65ft 4in 4.92 m
68282B
Length of Sample RunRows to Sample

3P3025AH and 3P4025AH Table of Contents Sprocket Indexing (Stagger)
Great Plains | 411-099B | 4/23/19 15
Sprocket Indexing (Stagger)
If you are planting:
• with a seed disc having 24 cells or less,
• twin-row crops,
• at seed populations below 45,000 seeds/acre
(111 000 seeds/ha),
you can synchronize each pair of adjacent meters in a
twin row for maximum seed-to-seed spacing between
the units of the pair.
If the initial indexing does not provide equal spacing, see
“Fine Adjustment Indexing” on page 17.
NOTE:
Due to limitations on the number of sprocket teeth and
wheel cell count, it may not be possible to obtain perfect
stagger. Charts and fine adjustment provide the optimal
available stagger.
If you are planting:
•single-row,
• or with seed discs or 25 cells or more,
• or a volumetric crop,
this section of the manual, and the sprocket indexing
charts, do not apply to your operations.
Basic Indexing
Tools required:
•7/8inch (23 mm) open end wrench
•3/8inch socket wrench, or any socket wrench with
3/8inch (9.5 mm) square drive
• 812-391C timing tool (located under walkboard)
Crushing Hazard:
This adjustment takes some time. Install transport locks. Do
not depend on hydraulics to hold the planter in the raised
position.
1. Find (on pages 18 to 20) the sprocket indexing chart
for your row spacing, cell count and desired seed
population.
Note the “Initial Rear Tooth Number” value in the
second column.
2. Raise the planter.
Chain geometry changes slightly when lowered. The
indexing charts account for this change, and assume
the Planter is raised. Also, raising the Planter
disengages the drive clutches, allowing you to turn
the drive shaft with a hand tool.
3. Clean out meters. Leave seed discs out. See the
planter Operator Manual for procedure.
NOTE:
Sprocket indexing may be performed with seed present
and discs installed, but if so, you must perform step 9
(chain taut check) by rotating the drive shaft forward to
remove slack. Reverse meter rotation, with seed present,
is not recommended.
28420
.tif
600 dpi
31445

Great Plains | 411-099B | 4/23/19 16
3P3025AH and 3P4025AH Table of Contents Sprocket Indexing (Stagger)
4. Use drive shaft to set front row unit to index 1.
Observe the meter drive sprocket at a front (short
mount) row unit on each wing. Use the wrench, from
the rear of the shaft, to rotate the shaft forward
(wrench up and forward).
Stop rotation with tip of tooth stamped “1” (1) aligned
with a rib (2) cast into the meter housing. In general,
the rib at the 2:00 position is the easiest to use, as it
is visible from the side and from behind the meter.
NOTE:
The illustration shows tooth 1 slightly ahead of the index
rib at 2:00.
5. Check front sprocket synchronization.
Inspect all meter drive sprockets on front row units.
Check that all springs are taut, and no chains have
slack. All sprockets should be at “1”. If not, use
step 6 through step 10 to set them to 1. Although
front sprockets machine-wide may be at 1 after this
check, sprockets do not remain in sync wing-to-wing,
due to clutch operation.
When equipped with swath control clutches the front
sprockets will not be synchronized. When swath
control clutches are in place each front sprocket
must be checked when timing its mating rear
sprocket. The front row can be advanced by
manually turning the tandem sprocket forward until
the front sprocket is at 1. Then set the rear sprocket.
Check that the front sprocket has not moved.
Equipment Damage Risk:
Do not apply significant force to meter disk, or drive hub may
be damaged.
NOTE:
In the future, finding front sprockets out of sync on a wing
suggests idler/spring problems, and/or worn chain. Row
drive systems must be in reliable working order for
effective sprocket indexing.
6. At the rear (long mount) row unit of each pair, note
which sprocket tooth is at the index mark (2). If the
sprocket is already at the chart value, skip to
step 12. Otherwise, complete step 7 through step 10
for that row.
7. Place the timing tool (3) over the meter shaft. Attach
a 3/8inch socket wrench to aid in rotation.
Sweep the tool tooth under the chain, rotating in the
direction opposite of that desired for sprocket
adjustment.
• Each clockwise rotation of the timing tool
advances the sprocket by one tooth.
• Each counter-clockwise rotation of the timing
tool retards the sprocket by one tooth.
If the timing tool is not available, remove the idler
tensioning spring to adjust the sprocket position.
Rotate meter shaft backward (if meter empty,
otherwise forward one full rotation), and re-check
indexing with normal tension on chain.
8. Advance or retard the sprocket until the desired
tooth number is at the index mark. Hold the sprocket
stationary, and re-mount the chain, making sure the
chain is taut in the top loop.
9. Rotate meter shaft backward, or rotate wing drive
shaft forward to tension chain. Re-check that front
row sprocket is still at “1”.
1
2
29630
2
29628
3
31444

3P3025AH and 3P4025AH Table of Contents Sprocket Indexing (Stagger)
Great Plains | 411-099B | 4/23/19 17
10. Check the position of the rear row sprocket. The
tooth tip at, or just ahead of the index mark must be
the tooth called for by the chart. If not, release spring
and re-mount chain.
11. Repeat step 4 through step 10 for each row pair.
12. Re-install seed discs and meter covers. No particular
disc orientation is required during seed disc
installation. The disc is symmetrical about all four
seat lobes.
Fine Adjustment Indexing
If, after indexing, the side-to-side seed stagger is still
considerably uneven, it is possible to make small
adjustments that may correct it. Imbalance can occur
over time as row unit chains wear and stretch.
The Indexing charts provide columns for alternate rear
row sprocket alignments. These settings move the
placement of the rear seed drop. The amount of
movement is given as a percentage (20% or 40%) of
the in-row seed spacing.
Adjustments are made only to the rear row timing.
• Advancing the timing (dropping the seed sooner,
moves the seed position back).
• Retarding the timing moves the seed position
forward.
If an adjustment is made, test it on one row pair before
adjusting the entire planter.
1. Make sure the current front sprocket index is 1, and
the current rear sprocket index number matches the
“Initial” number in the indexing chart for the
population being planted.
2. Measure the actual stagger at the rear row seeds.
3. Determine by how many inches (or cm) the rear
seed placement needs to move in order to be
centered between the front seed placements.
4. Determine the percent of seed spacing, and whether
advance or retard, required to adjust the rear seed
drop to the desired spot.
5. In the tables (thumbnail view below), find the new
rear sprocket tooth setting for the percent retard or
advance desired.
29717
Example:
The front sprocket is at “1”. At a target population of 31,500
seeds/acre, the rear sprocket is at tooth “17”.
At this population, spacing in a single row is 13.3 inches.
The rear row seeds would be ideally at 6.6 inches ahead or
behind the front row seeds.
We find that the rear seeds are being placed 1.5 inches
behind the front seeds.
We need to move the rear seeds back another 5.1 in.
A 40% advance is 5.3 inch at this seed spacing.
Moving the rear sprocket from tooth 17 to tooth 18 provides a
40% advance.
acre hectare acre hectare acre hectare acre hectare Retard
31 500 77 838 26 250 64 865 24 868 61 451 23 625 58 378 17 14
32 000 79 073 26 667 65 895 25 263 62 426 24 000 59 305 17 14
32 500 80 309 27 083 66 924 25 658 63 402 24 375 60 232 5 14
33 000 81 544 27 500 67 954 26 053 64 377 24 750 61 158 5 18
33 500 82 780 27 917 68 983 26 447 65 353 25 125 62 085 2 18
34 000 84 015 28 333 70 013 26 842 66 328 25 500 63 012 1 18
34 500 85 251 28 750 71 043 27 237 67 303 25 875 63 938 1 3
Seeds per
Twin Row 38in Twin Row 40in
Initial
Rear
Tooth
Number
20% Re
Drop Ad
Seeds per
Twin Row 30in Twin Row 36in
Seeds per Seeds per
acre hectare acre hectare acre hectare acre hectare Retard
31 500 77 838 26 250 64 865 24 868 61 451 23 625 58 378 17 14
32 000 79 073 26 667 65 895 25 263 62 426 24 000 59 305 17 14
32 500 80 309 27 083 66 924 25 658 63 402 24 375 60 232 5 14
33 000 81 544 27 500 67 954 26 053 64 377 24 750 61 158 5 18
33 500 82 780 27 917 68 983 26 447 65 353 25 125 62 085 2 18
34 000 84 015 28 333 70 013 26 842 66 328 25 500 63 012 1 18
34 500 85 251 28 750 71 043 27 237 67 303 25 875 63 938 1 3
Seeds per
Twin Row 38in Twin Row 40in
Initial
Rear
Tooth
Number
20% Re
Drop Ad
Seeds per
Twin Row 30in Twin Row 36in
Seeds per Seeds per
hectare acre hectare Retard Advance Retard Advance
61 451 23 625 58 378 17 14 1 4 18
62 426 24 000 59 305 17 14 2 11 18
63 402 24 375 60 232 5 14 2 8 18
64 377 24 750 61 158 5 18 5 8 14
65 353 25 125 62 085 2 18 17 15 14
66 328 25 500 63 012 1 18 17 12 14
67 303 25 875 63 938 1 3 9 12 14
Seeds per
jy
Row 38in Twin Row 40in
Initial
Rear
Tooth
Number
20% Rear Seed
Drop Adjustment
40% Rear Seed
Drop Adjustment
ds per

Great Plains | 411-099B | 4/23/19 18
3P3025AH and 3P4025AH Table of Contents Sprocket Indexing (Stagger)
Twin Row Sprocket Indexing Charts
This is NOT a seed rate chart. This is a chart for
staggering seed spacing between rows of a twin-row
planter.
This chart contains US customary units and metric
units (seeds/acre and seeds/hectare).
Verify sprocket tooth position with the top length of chain taut.
1. Set front meter to tooth “1”.
2. Set rear meter to indicated initial tooth number.
3. Advance or Retard to adjust.
acre hectare acre hectare acre hectare acre hectare Retard Advance Retard Advance
17 000 42 008 14 167 35 006 13 421 33 164 12 750 31 506 7 3 4 6 16
17 500 43 243 14 583 36 036 13 816 34 139 13 125 32 432 19 10 16 13 16
18 000 44 479 15 000 37 066 14 211 35 115 13 500 33 359 19 10 16 13 16
18 500 45 714 15 417 38 095 14 605 36 090 13 875 34 286 3 7 19 10 16
19 000 46 950 15 833 39 125 15 000 37 066 14 250 35 212 4 6 19 9 12
19 500 48 185 16 250 40 154 15 395 38 041 14 625 36 139 4 1 15 17 12
20 000 49 421 16 667 41 184 15 789 39 016 15 000 37 066 18 11 15 14 12
20 500 50 656 17 083 42 214 16 184 39 992 15 375 37 992 8 2 15 5 8
21 000 51 892 17 500 43 243 16 579 40 967 15 750 38 919 8 5 11 5 8
21 500 53 127 17 917 44 273 16 974 41 943 16 125 39 846 14 15 11 18 8
22 000 54 363 18 333 45 302 17 368 42 918 16 500 40 772 14 15 11 18 4
22 500 55 598 18 750 46 332 17 763 43 894 16 875 41 699 12 9 7 1 4
23 000 56 834 19 167 47 362 18 158 44 869 17 250 42 626 10 19 7 3 4
23 500 58 070 19 583 48 391 18 553 45 844 17 625 43 552 10 19 7 3 4
24 000 59 305 20 000 49 421 18 947 46 820 18 000 44 479 16 13 3 10 19
24 500 60 541 20 417 50 450 19 342 47 795 18 375 45 405 6 13 3 10 19
25 000 61 776 20 833 51 480 19 737 48 771 18 750 46 332 6 4 3 7 19
25 500 63 012 21 250 52 510 20 132 49 746 19 125 47 259 1 17 18 14 15
26 000 64 247 21 667 53 539 20 526 50 721 19 500 48 185 2 17 18 14 15
26 500 65 483 22 083 54 569 20 921 51 697 19 875 49 112 2 8 181115
27 000 66 718 22 500 55 598 21 316 52 672 20 250 50 039 5 5 18 18 11
27 500 67 954 22 917 56 628 21 711 53 648 20 625 50 965 5 2 14 18 11
28 000 69 189 23 333 57 658 22 105 54 623 21 000 51 892 17 12 14 15 11
28 500 70 425 23 750 58 687 22 500 55 598 21 375 52 819 9 1 14 3 7
29 000 71 660 24 167 59 717 22 895 56 574 21 750 53 745 9 6 10 3 7
29 500 72 896 24 583 60 746 23 289 57 549 22 125 54 672 13 16 10 19 7
30 000 74 131 25 000 61 776 23 684 58 525 22 500 55 598 13 16 10 19 3
30 500 75 367 25 417 62 806 24 079 59 500 22 875 56 525 13 10 6 7 3
31 000 76 602 25 833 63 835 24 474 60 476 23 250 57 452 9 10 6 4 3
68254A
Seeds per Seeds per Seeds perSeeds per
Twin Row 30in Twin Row 36in Twin Row 38in
Initial
Rear
Tooth
Number
These Columns are for Fine Adjustment Only
Twin Row 40in 20% Rear Seed
Drop Adjustment
40% Rear Seed
Drop Adjustment