Seed and Fertilizer Rate Charts for Air
Drills with Variable Rate Gearbox (VRG)
Metering, models:
NTA607 or NTA607HD,
NTA907 or NTA907HD,
NTA2007 or NTA2007HD,
NTA3007 or NTA3007HD, and
ADC2350 or ADC2350B Air Drill Carts
with all compatible air drill implements
The following pages are to assist in the proper setting of seeding and
fertilizer rates for the air drill.
To assure the most accurate application rates it is recommended that the air drill be calibrated for the
desired materials at the time of planting.
Great Plains Manufacturing, Inc. provides this publication “as is” without warranty of any kind, either expressed or implied. While every precaution has been
taken in the preparation of this manual, Great Plains Manufacturing, Inc. assumes no responsibility for errors or omissions. Neither is any liability assumed for
damages resulting from the use of the information contained herein. Great Plains Manufacturing, Inc. reserves the right to revise and improve its products as
it sees fit. This publication describes the state of this product at the time of its publication, and may not reflect the product in the future.
2012-01-03CoverAppendix167-085B
Trademarks of Great Plains Manufacturing, Inc. include: Singulator Plus, Swath Command, Terra-Tine.
Registered Trademarks of Great Plains Manufacturing, Inc. include:
Air-Pro, Clear-Shot, Discovator, Great Plains, Land Pride, MeterCone, Nutri-Pro, Seed-Lok, Solid Stand,
Brand and Product Names that appear and are owned by others are trademarks of their respective owners.
Printed in the United States of America
Great Plains Manufacturing, Inc.ContentsAppendix1
Introduction
This manual is your guide to drill adjustments for
achieving specific seed population and fertilizer density
targets.
Although some setup/adjustment material herein is
repeated from the cart and drill Operator Manuals, you
need to be thoroughly familiar with cart and drill
operations and adjustments before applying the data
from this Seed and Fertilizer Rate Charts Manual.
Drill Models Covered
This manual covers Great Plains air drill/cart models
with meters (dosing units) controlled by one or two
Zero-Max® Variable Rate Gearboxes (VRG). This
includes the following models. Not all models are
available in all locales.
Drills used with ADC2350B Air Cart:
3N4010HDA 3-Section 40ft Heavy Duty Air Drill
Drills used with ADC2350 Air Cart
CTA40002007+ 40ft Conventional Till Air Drill
CTA4000HD CTA4000 Heavy Duty opener
NTA30102007+ 30ft No-Till Air Drill
NTA35102007+ 35ft No-Till Air Drill
Integrated Air Drills
NTA6076m No-Till Pneumatic Drill
NTA607HD6m No-Till Heavy-Duty Pneumatic Drill
NTA9079m No-Till Pneumatic Drill
NTA907HD9m No-Till Heavy-Duty Pneumatic Drill
NTA200720ft No-Till Air Drill
NTA2007HD 20ft No-Till Heavy-Duty Air Drill
NTA300730ft No-Till Air Drill
NTA3007HD 30ft No-Till Heavy-Duty Air Drill
The rate charts are independent of drill width and row
spacing. With ADC2350/B carts, setup sprockets on the
air cart compensate for differences between the drill
models. If the air cart was ordered for use with a different
drill model than actually used, check the setup sprocket
configuration. See the air cart Operator Manual.
a
Setting Planting Rate
There are four steps to obtaining the target number of
seeds, or fertilizer kg (or pounds), per hectare (or acre):
1. Enter seed monitor setup information
Refer to your material containers or material
supplier. The charts include default values.
2. Set Final Drive Range on seed meter
Unusual rates may require an optional meter flute
(“stars”) kit installation.
3. Set Variable Rate Gearbox.
4. Calibrate
See “Meter Calibration” on page 7.
Calibrate each meter separately, even if the hoppers
contain the same material.
Note: Units of Measure:
This manual provides most values in dual units of
measure (metric and U.S. customary). If you
prefer a manual that is metric only, obtain a copy
of manual part number 167-085B-ENG.
a. Non-VRG models not covered include 3N4010HDF, 3N4010HDP, ADC0295, ADI334, ADI345, ADI434, ADI445, ADC1150, ADC2200,
ADC2250, CDA600, NTA1000, NTA1300 and NTA2000.
2012-01-03ContentsAppendix167-085B
2Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
Setting Meter Rate
Check Flute Shaft Configuration
Refer to Figure 2
(which depicts a single flute “star” with its halves, a single star
mated, two stars staggered, and a filler)
Know your “stars” (dosing roller) setup. If your air cart
has never been changed from factory standard, you have
meter flute shafts with two deep-flute “stars”(4 halves)
per outlet. How many “stars” you have determines which
rate seed rate chart to use.
Refer to Figure 3 (depicting an inspection from below meter)
If the configuration is not known, inspect the flute shaft
from the hopper lid (if hopper empty), or from below the
meter, with the calibration door fully open. It is not
necessary to remove the shaft. Inspect the flutes, and
filler rings at active outlets.
On a standard “2 star” shaft, each seed drop outlet
contains two flute sets (4 halves), each pair staggered
slightly from the next. Unused outlets are fully blocked by
filler rings.
On an optional “3 star” shaft, each outlet contains 3 flute
sets of the deep style.
On an optional “4 star” shaft, each outlet contains 4 flute
sets of the deep style, with no fillers between adjacent
drops.
On an optional Small Seeds shaft, each outlet contains
one set of narrow, shallow flutes.
3
4
1
1
2
1
1
Find Your Chart and Rate
1
Figure 2
Flute Stars and Filler
1
3
Figure 3
Checking Flute Shafts
3
2
32400
4
26426
Standard “2 star” rates begin on page 13. “3 star”,
“4 star” and Small Seeds rates are in the Appendix,
starting on page 38.
If you are planning to apply two different materials (such
as seed and fertilizer) in each hopper, perform the setup
steps separately for each hopper, as the configurations
(including stars) may be completely different.
1. Confirm that the chart is for the material and star
configuration you have.
2. Find your target population or application rate.
Note: If you have a choice of charts, for most consistent
results, pick one that results in a variable rate
gearbox value between 30 and 70.
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendixSetting Meter Rate3
Monitor Material Configuration
The DICKEY-john® IntelliAg® monitor reads meter shaft
rpm and can report Kg/ha (or pounds-per-acre) planted.
In order to report accurately, the monitor requires several
user inputs. Inputs that rarely change were entered
during cart setup (see “Setup Seed Monitor for AirDrill” in the air cart Operator’s Manual). Inputs specific to
particular materials (seed or fertilizer) need to be entered
when those materials are first used, and when changed.
®
See the DICKEY-john
Air Cart Control Operator’s Manuals for more
detailed instructions. This Rate manual section
covers only monitor information needed for seed
rate calibration.
Quick Start guide and
1.Material Configuration Setup Screen for Seeds
“Type” - This must be set to “Gran Seed Monitor” to
configure for seeds.
“Density Units” - In metric mode this is always kg/litre. If
configured for “U.S.” mode (U.S. customary units), this is
pounds-per-bushel or pounds-per-cubic-foot.
“Density” - This is the density of seed being planted.
Obtain this information from the material container/
supplier. If unknown, use the value specified in the rate
chart.
“Total Number of Towers” - This is the number of
outlets used per meter box (typically 4, 5 or 6).
“Calibration Constant” - This is the number listed in the
seed rate charts for the rate you are planting or the
number obtained from running the calibration routine for
your specific seed.
25421
Note: Always enter Density Units before entering the
Density value. Changing the value of Density
Units causes the value for Density to be re-
computed
2.Material Configuration Setup Screen for Fertilizer
“Type” - This must be set to “Gran Fert Monitor” to
configure for fertilizer.
“Density” - Enter the density of Fertilizer being applied,
in kg-per-litre (or pounds-per-cubic-foot). Obtain this
information from the material container/supplier. If
unknown, use the value specified in the rate chart.
“Total Number of Towers” - This is the number of
outlets used per meter box.
“Calibration Constant” - This is the number listed in the
seed rate charts for the rate you are planting or the
number obtained from running the calibration routine for
your specific fertilizer.
2012-01-03ContentsAppendix167-085B
4Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
3.Channel Setup Screen
Channel 1 setups are for the front hopper.
Channel 2 setups are for the rear hopper.
“Type” - Set this to either “Gran Seed Monitor” or
“Gran Fert Monitor” based on the type of material in each
hopper.
“Material Name” - Choose the name of the material
configured for each channel in steps 1 and 2 above.
“Sensor Constant” - [ 360 ]
“Gear Ratio” - [ 1 ]
“Channel Width” - is your Implement Width (swath) in
cm (inches). Precise row/swath data is found in the air
cart or implement Operator Manuals.
If the monitor inputs are correctly entered, the monitor is
a handy tool for fine-tuning the variable rate gearbox
setting. If the rate reported by the monitor does not
match the target planting rate, rotate the crank to adjust
the variable rate gearbox control arm slightly so as to
achieve the target planting rate.
Consult the DICKEY-john® manual for how to configure
reporting and alerts.
Meter Rate Adjustment
Seed rate is determined by:
• seed meter Final Drive Range gearing
• Variable Rate Gearbox setting
The Seed Rate Charts are based on cleaned untreated
seed of average size and test weight. Many factors affect
meter rates including foreign material, seed treatment,
seed size, field conditions, and test weight.
Minor adjustments will be needed to compensate for
these factors. Initially set the rates according to the
charts, then calibrate for your material and conditions.
Calibration is also required to set up the monitor
Calibration Constant. With the correct Calibration
Constant and material density the monitor can be used
to help fine tune the variable rate gearbox setting.
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendixSetting Meter Rate5
Seed Meter Final Drive Range
Refer to Figure 4 and Figure 5 (which depict meters without
guards - if your cart included guards, do not operate without
them)
The meter flute shaft is driven by the agitator shaft
through a pair of interchangeable gears,. The
positioning of these gears creates two final drive ranges.
Each rate chart is based on a specific Final Drive Range.
The Ranges are:
• “High” range, which is used for larger seeds and
higher seeding rates
• “Low” range, which is used for smaller seeds and
lower seeding rates
The two seed meter shafts are labelled “DRIVING” and
“DRIVEN”.
The “DRIVING” shaft is the upper shaft.
The “DRIVEN” shaft is the lower shaft.
Refer to the Seed Rate Chart (or Fertilizer Rate Chart),
the table below, and Figure 4 and Figure 5 for setting the
seed meter final drive range.
12
34
3
DRIVEN
1
Figure 4
Low Final Drive Range
4
DRIVING
2
26368
FINAL DRIVE
RANGE
LOW RANGE17 Tooth Small54 Tooth Large
HIGH RANGE54 Tooth Large17 Tooth Small
1. Remove the lynch pins from the ends of both
shafts.
2. Remove and position the gears as shown in the table
above.
3. Secure with lynch pins.
DRIVINGDRIVEN
5
DRIVEN
5
Figure 5
High Final Drive Range
DRIVING
5
26369
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6Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
Setting Variable Rate Gearbox
The variable rate gearbox allows an infinitely variable
meter drive speed to attain a wide range of metering
rates. The ratio of gearbox input speed to output speed is
controlled by the position of a gearbox control arm. The
control arm has an indicator that points to a scale
marked in degrees. The Seed Rate Charts (or Fertilizer
Rate Charts) show the rate for each degree of arm
rotation.
Refer to the rate charts and set the variable rate gearbox
control arm to its scale setting for the target rate. With
the optional servo-controlled meters (Variable Rate Kit),
the rate is set via the console terminal.
To adjust the Variable Rate Gearbox for each hopper:
Refer to Figure 6
1. Remove the hairpin cotter securing the gearbox
adjustment crank.
2. Rotate crank until the control arm indicator points to
the scale setting that matches the rate from the
chart, or as determined by calibration.
3. Re-insert the hairpin cotter.
Note: The variable rate gearbox operates optimally
between 30 and 70. If a material has charts for both
HIGH Range and LOW Range, the most consistent
results are obtained when the gearbox control arm
is set between 30 and 70. Settings below 20
degrees are not recommended. When the control
arm is set above 70 degrees, large movements of
the arm result in small changes in seeding rate.
Note: If you will be metering the same material from both
bins at the same time, use the chart entry for half
the target application rate. Do not use a half scale
setting - the effect of the variable rate gearbox
control arm is not linear.
1
2
Figure 6
Variable Rate Gearboxes
3
26306
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendixSetting Meter Rate7
Meter Calibration
The rate charts are based on cleaned untreated seed of
average size and test weight. Many factors affect meter
rates including foreign material, seed treatment, seed
size, field conditions, and test weight. The Fertilizer Rate
Chart is based on a representative granular fertilizer.
Great Plains recommends calibrating for the exact
materials you intend to apply. Calibration determines two
very important settings for achieving accurate rates:
• The Kg/ha (or pounds per acre) of the meter at the
current variable rate gearbox setting for your particular
seed or fertilizer.
• The Calibration Constant for the monitor to accurately
report the planting rate of your particular seed or
fertilizer.
Calibration Procedure
The seed monitor must be correctly set up for both the air
drill and the material(s), or the calibration will not result in
useful console displays.
1. Set the Final Drive Range gears and Variable Rate
Gearbox setting to the values suggested in the Seed
Rate Chart (or Fertilizer Rate Chart).
2. Make sure there is enough material in the hopper(s)
for at least1⁄10 hectare (or1⁄10 acre) plus an extra
35 to 45 Kg (75 to 100 pounds).
Refer to Figure 8 (which depicts a meter without guards - if
your cart included guards, do not operate without them)
3. Only one calibration bag is provided, so remove one
of the final range gearsfrom the meter that is NOT
being tested, to disable it.
4. Open the calibration door of the meter being
calibrated. The calibration door is the door furthest
from the DRIVING gear, and may be marked with a
decal.
1
2
DRIVEN
2
Figure 7
Calibration Door Open
1
DRIVING
26339
2012-01-03ContentsAppendix167-085B
8Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
Calibration Crank
Loss of Material Risk:
Do not open the door under the DRIVING gear. This is the
clean-out door. Opening this door drains the hopper. Once the
clean-out door is open it is difficult to stop seed flow until the
hopper is empty, and impossible to close it with a seal tight
enough for application.
Refer to Figure 8 or Figure 10
5. Mount calibration crank:
ADC2350/B: onto clutch shaft. See “Meter HandCrank” in air cart Operator Manual for operations.
NTA907/3007/HD: onto contact drive shaft. See
Figure 8
ADC2350/B Calibration Crank
26333
“Calibration Crank” in Operator Manual for
operations.
Machine Damage and Rate Risks:
Rotate calibration crank only in the correct direction:
ADC2350/B:COUNTERCLOCKWISE
NTA607/2007/HDCOUNTERCLOCKWISE
NTA907/3007/HD:CLOCKWISE on left side, at contact
drive (as shown in Figure 10) or at
jackshaft (2012+ models),
COUNTERCLOCKWISE on right side
at contact drive
Operating in reverse can cause gearbox damage.
6. Turn the calibration crank enough turns to be sure
the meter flutes are full and the system is metering.
Possible Agricultural Chemical Hazards:
Obey manufacturer or grower recommendations for safety
equipment and protective gear when using treated seeds.
7. Wipe all material off the flanges around the meter
door.
Figure 9
NTA607/2007/HD Calibration Crank
31171
Figure 10
29417
NTA907/3007/HD Calibration Crank
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendixSetting Meter Rate9
8. Accurately weigh an empty container large enough
to catch material coming out of the meter. The
calibration bag supplied with your cart or drill weighs:
ADC2350/B:1.52 Kg (3.36 lbs)
NTA607/2007/HD: 0.91 Kg (2.0 lbs)
NTA907/3007/HD: 1.52 Kg (3.36 lbs)
9. As needed, on models with calibration chutes,
deploy or install the chute.
Refer to Figure 11 (which depicts a meter without guards - if
your cart included guards, do not operate without them)
10. Place calibration bag under open calibration door or
onto the calibration chute:
ADC2350:
ADC2350B:
NTA607/HD:
NTA2007/HD:
NTA907HD:
NTA3007HD:
NTA907:
NTA3007:
11. On the seed monitor terminal,
set the monitor to Calibration mode.
enter [ 5 ] for the “# Meter Revs”, and
press the Start softkey.
This “# Meter Revs” parameter does not affect the
monitor calibration because the monitor counts
actual meter shaft revolutions and uses that count to
compute the Calibration Constant.
The “# Meter Revs” parameter is used for a progress
bar displayed during calibration.
12. Turn the calibration crank for the number of turns to
simulate1⁄10hectare (or1⁄10acre). See table at right
for the correct number of turns for your implement.
Note: A longer calibration is always more accurate,
especially for low rates and small seeds.1⁄
hectare or acre is easy to calculate and is a
minimum calibration run.
Note: It is important to turn the calibration crank rapidly.
For ADC2350, ADC2350B, NTA907/HD and
NTA3007/HD, about 2 to 21⁄2revolutions per
second is the proper speed to simulate
8 to 9.6 kph (5 to 6 mph) planting speed.
For NTA607/HD and NTA2007/HD, about 1 to 13⁄
Loop bag handles over door handles
and hook bag to front of the meter.
Deploy calibration chute. Attach bag
to end of chute.
Loop bag handles over door handles
and hook bag to front of the meter.
Install calibration chute. Attach bag to
discharge end of chute.
10
Figure 11
26402
Calibration Bag
Clutch Shaft (Crank) Revs for…
Drill Model
3N-4010HDA
CTA4000
CTA4000HD
NTA607
a
NTA607HD
NTA907
NTA907HD
NTA2007
a
NTA2007HD
NTA3007
NTA3007HD
NTA3010
NTA3510
a. The implement or drill Operator Manual provides
more precise crank counts, which vary slightly with
row spacing, wing flex option and pass/bout gap.
b. Counted at jackshaft.
4
c. Counted at contact wheel.
1
⁄10 Hectare
761⁄
2
751⁄
2
751⁄
2
861⁄
4
a
861⁄
113
105
4
b
c
105
861⁄
4
a
861⁄
113
105
4
b
c
105
102
77
1
⁄10 Acre
31
301⁄
301⁄
35
35
45.9
421⁄
421⁄
35
35
45.9
421⁄
421⁄
411⁄
311⁄
2
2
b
c
2
2
b
c
2
2
4
4
revolutions per second is the proper speed to
simulate 6.7 to 11.8 kph (4.2 to 7.3 mph).
2012-01-03ContentsAppendix167-085B
10Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
13. Wipe all the material off the flanges around the
meter doors and capture that material in the
calibration container.
The right column contains an example for the following
steps, in U.S. customary (“USc”) and Metric units.
Metric Example:
Wheat, High Rate,
2 Stars
Target Seed Rate:
200 Kg/ha
USc Example:
Wheat, High Rate,
2 Stars
Target Seed Rate:
67.6 pounds per acre
Initial Variable Rate Gearbox setting:
6238
Empty Calibration Bag Weight:
1.52 Kg3.36 lbs
14. Accurately weigh the container plus material.
Subtract the empty container weight to determine
the application rate for1⁄10 hectare (or1⁄10acre).
SampleWeightMeasuredWeight ContainerWeight–=
15. Press the Stop softkey on the monitor
and enter the sample net weight (SampleWeight).
The monitor responds with a Calibration Constant.
Push the Save softkey to accept this
value.
16. Multiply the sample size by 10 to determine
application rate per hectare (acre) at the current
variable rate gearbox setting.
CalibratedRateSampleWeight 10×=
If the calibrated rate matches the target rate, skip to
step 22. Otherwise…
17. Subtract the calibrated rate per hectare (or acre)
from the target rate to determine a correction
difference.
RateDifferenceTetRargate CalibratedRate–=
Metric Example:
MeasuredWeight is:
23.3 Kg
SampleWeight =
23.3 - 1.53
which is:
21.7 Kg
Metric Example:
CalibratedRate =
21.7 x 10
which is:
217 Kg/ha
USc Example:
MeasuredWeight is:
10.92 pounds
SampleWeight =
10.92 - 3.36,
which is:
7.56 pounds
USc Example:
CalibratedRate =
7.56 x 10,
which is:
75.6 lbs/ac
This is higher than our target rate of:
200 Kg/ha67.6 lbs/ac
Metric Example:
TargetRate =
200
RateDifference =
200 - 217,
which is:
-17 Kg
USc Example:
TargetRate =
67.6
RateDifference =
67.6 - 75.6,
which is:
-8 pounds
The calibration run metered too much.
You must lower the gearbox setting to compensate.
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendixSetting Meter Rate11
18. Refer to the Seed Rate Chart (or Fertilizer Rate
Chart for Seed or Fertilizer Rate gearbox setting
values for the target rate.
19. Determine the amount of rate change for each
degree of control arm rotation from the target setting.
If the calibrated rate was
higher than target (as in our example),
examine lower gearbox setting values.
If the calibrated rate was
lower than target,
examine higher gearbox setting values.
20. Adjust the control arm by the number of degrees
needed to adjust for the calibration difference.
The rate of the arm adjusting crank is more than one
scale degree per turn, and the crank can only be
pinned at quarter turns. Pin it when the indicator is
closest to the corrected setting.
21. Run the calibration again, starting at step 10, using
the new Variable Rate Gearbox scale setting.
This validates the gearbox adjustment, and
establishes a new, more precise Calibration
Constant.
22. With the present meter satisfactorily calibrated, remount the final drive gear removed from the other
hopper.
23. Repeat the calibration procedure for the other
hopper, starting at step 1.
Metric Example:USc Example:
1 degree lower reduces rate by
201.3 - 195.4, or 5.9 Kg67.6-63.9, or 3.7 lbs
2 degrees lower reduces by
201.3 - 189.4, or 11.9 Kg67.6-60.4, or 7.2 lbs
3 degrees lower reduces by
201.3 - 183.5, or 17.8 Kg67.6-56.9, or 10.7 lbs
Metric Example:USc Example:
The calibration difference was:
17 Kg8 pounds.
Adjusting down 3 degrees
would slightly over-correct,
at a difference of 17.8 Kg
Adjusting down 2 degrees
would correct by 7.2
pounds, but adjusting by 3
would over-correct to 10.7
lbs.
So adjust the gearbox
setting to just under 3
degrees lower, to a final
scale setting of:
So adjust the gearbox
setting to just over 2
degrees lower, to a final
scale setting:
slightly above 59slightly below 36
If only planting from a single hopper, see “SingleHopper Operation” in the air cart Operator Manual
for methods of disabling the meter on the hopper not
in use.
24. Remove and store the calibration crank.
2012-01-03ContentsAppendix167-085B
12Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
Changing Flute Stars
Refer to Figure 12
If the target material rate is too high or too low for the
standard meter flutesand standard “2 Stars” charts, it
may be appropriate to use an optional flute shaft in the
meter.
The Appendix provides alternate charts for some
commonly requested seeds and rates.
3
“3 Stars” high rate charts provide metering rates that
are approximately 150% of standard rates.
4
“4 Stars” high rate charts provide metering rates that
are approximately 200% of standard rates.
s
“Small Seeds” charts provide metering rates that vary
between 20% and 50% of standard rates, if the seeds
are physically compatible with the narrower, shallower
Small Seeds flute pockets.
Consult the air drill or air cart Operator Manual for
ordering and installation of optional flute shafts.
If the tables do not cover your intended application, and
you have optional stars, use setup data for a physically
comparable seed, and calibrate.
2
s
3
4
2
Figure 12
Alternate Flute Shafts
32398
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendix13
h
g
D
g
o
a
t
a
d
Seed Rates
Reading Seed Rate Charts
1. Find the chart for your seed.
Note: There may be more than one table for the seed.
Other tables require either a different Final Range,
or different flute “stars”, or both. Higher Star count,
and Small Seeds charts are in the Appendix.
2. Verify that the chart is for your star configuration
(number of flutes at each meter outlet). 2 full depth
stars per drop is standard.
Optional kits are available to increase to 3 or 4 deep
stars or to use 2 shallow (Small Seeds) stars.
See “Changing Flute Stars” on page 12.
Wheat (Triticum)
Standard Stars, High Range. Higher rate Wheat c
(Triticum)
Stars, High Range. Higher rate Wheat charts, requirin
rive Range GearsStars Per OutletSeed
ving; 17T Driven(standard)61.5 p
k 97.02egn
3. Determine the Final Drive Range gearing required.
See “Seed Meter Final Drive Range” on page 5.
Note: The final drive range gearing may be different for
the fertilizer hopper and the seed hopper. If
applying the same material from both hoppers, set
both gear sets identically.
4. Note the reference Seed Densitya used to generate
the chart data. Enter this on the seed monitor only if
you do not know your actual density.
5. Find your target Seed Rate.
If planting the same seed from both hoppers
simultaneously, divide your target rate in half before
consulting the table.
6. Set the Variable Rate Gearbox control arm to the
number of degrees specified in the chart under
“Gearbox Setting”.
Note: Charts begin at setting 20.
Settings below 20 are not recommended, other
than zero (0), which may be used to temporarily
shut off flow from that meter.
7. Enter the Calibration Constant (“Cal. Const.”) on the
seed monitor. See manual 167-085B-ENG for
Calibration Constants in pulses per litre.
Wheat (Triticum)
Standard Stars, High Range. Higher rate Wheat ch
Final Drive Range GearsStars Per Ou
2egnaR hgiH
54T Driving; 17T Driven(standard)
ars Per OutletSeed DensityRem
ertil/gk 97.0
tandard)61.5 pounds per bushel
l.
st.*
100.2112.34677955238.5
99104.7117.34777990243.7
02109.2122.44878027248.8
92113.9127.64978067253.8
68118.5132.95078110258.8
31123.3138.25178159263.6
Gearbox
Setting
Cal.
Const.*
See t
eeSetaR deeS
ca/sblah/gkca/sbl
a. If your actual seed density is significantly different, see “Density Adjustment” on page 38.
In general, Calibration automatically compensates for typical differences between actual and reference (chart) seed densities.
2012-01-03ContentsAppendix167-085B
14Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
Alfalfa (Medicago sativa)
Standard Stars, Low Range
Final Drive Range GearsStars Per OutletSeed DensityRemarks:
Low Range20.77 kg/litre
17T Driving; 54T Driven(standard)60.0 pounds per bushel
See table Notes.
Seed Rate
lbs/ackg/halbs/ackg/halbs/ackg/ha
Gearbox
Setting
Cal.
Const.*
Seed RateSeed Rate
Gearbox
Setting
Cal.
Const.*
Gearbox
Setting
Const.*
000-8.29.2469258021.023.57390713
1.41.620865058.69.6479256321.524.17490698
1.61.821870278.910.0489253422.124.87590696
1.82.022875259.310.4499249422.725.57690706
2.02.223879979.710.9509244523.326.17790729
2.22.4248844510.111.3519238723.926.87890768
2.42.6258886710.511.8529232224.527.57990821
2.62.9268926510.912.2539224925.128.18090892
2.83.1278963811.312.7549217025.728.88190979
3.03.4288998711.813.2559208626.329.58291085
3.23.6299031112.213.7569199926.930.28391211
3.53.9309061112.714.2579190727.530.98491356
3.74.2319088713.114.7589181428.131.68591523
4.04.4329114113.615.2599171928.832.28691713
4.24.7339137114.115.8609162329.432.98791926
4.55.0349157914.616.3619152830.033.68892164
4.85.3359176515.016.9629143330.634.38992429
5.05.6369193115.517.4639134131.234.99092720
5.36.0379207516.118.0649125231.735.69193041
5.66.3389220016.618.6659116632.336.29293392
5.96.6399230617.119.2669108532.936.99393775
6.27.0409239417.619.8679100933.537.59494191
6.57.3419246418.220.4689093934.038.19594644
6.87.7429251718.721.0699087734.638.79695133
7.28.0439255519.321.6709082235.139.39795662
7.58.4449257719.822.2719077635.639.99896232
7.98.8459258520.422.9729074036.140.59996846
Alfalfa (Low Range)* Pulses per cubic foot
Notes:
Stated seed density is measured, and not customary commodity call
weight. If your seed has a significantly different density,
see “Density Adjustment” on page 38.
Table rates are for application from a single hopper at a time
(whether or not both are loaded with the same material). For
application of the same material from both hoppers simultaneously,
do not use the target rate data. First divide the target rate by two,
and use the setting for that half rate. Use that target rate for
calibrating each meter.
Cal.
31288
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendixSeed Rates15
Alfalfa
Standard Stars, High Range
Final Drive Range GearsStars Per OutletSeed DensityRemarks:
High Range20.77 kg/litre
54T Driving; 17T Driven(standard)60.0 pounds per bushel
Stated seed density is measured, and not customary commodity call
weight. If your seed has a significantly different density,
see “Density Adjustment” on page 38.
Table rates are for application from a single hopper at a time
(whether or not both are loaded with the same material). For
application of the same material from both hoppers simultaneously,
do not use the target rate data. First divide the target rate by two,
and use the setting for that half rate. Use that target rate for
calibrating each meter.
31289
2012-01-03ContentsAppendix167-085B
16Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
Barley
Standard Stars, High Range
Final Drive Range GearsStars Per OutletSeed DensityRemarks:
High Range20.68 kg/litre
54T Driving; 17T Driven(standard)53.0 pounds per bushel
Stated seed density is measured, and not customary commodity call
weight. If your seed has a significantly different density,
see “Density Adjustment” on page 38.
Table rates are for application from a single hopper at a time
(whether or not both are loaded with the same material). For
application of the same material from both hoppers simultaneously,
do not use the target rate data. First divide the target rate by two,
and use the setting for that half rate. Use that target rate for
calibrating each meter.
31290
167-085BContentsAppendix2012-01-03
Great Plains Manufacturing, Inc.ContentsAppendixSeed Rates17
Final Drive Range GearsStars Per OutletSeed DensityRemarks:
Low Range20.64 kg/litre
17T Driving; 54T Driven(standard)49.5 pounds per bushel
See table Notes.
Seed Rate
lbs/ackg/halbs/ackg/halbs/ackg/ha
Gearbox
Setting
Cal.
Const.*
Seed RateSeed Rate
Gearbox
Setting
Cal.
Const.*
Gearbox
Setting
000-6.57.3469584316.118.07397970
1.11.220931126.87.6479601116.618.67497862
1.21.421930957.17.9489617917.019.17597736
1.41.522930937.48.3499634517.519.67697589
1.51.723931057.78.6509650818.020.27797421
1.71.924931298.08.9519666818.520.77897232
1.82.125931678.39.3529682519.021.37997022
2.02.226932168.69.6539697719.521.98096790
2.22.427932778.910.0549712420.122.58196536
2.42.628933489.210.3559726520.623.18296259
2.52.929934309.510.7569739921.223.88395960
2.73.130935229.911.1579752621.824.48495637
2.93.3319362210.211.4589764522.425.18595292
3.13.5329373210.611.8599775523.025.88694923
3.33.7339384910.912.2609785623.626.58794530
3.64.0349397411.312.6619794724.327.28894115
3.84.2359410511.613.0629802624.927.98993676
4.04.5369424412.013.4639809425.628.79093214
4.24.7379438712.413.9649814926.329.59192729
4.55.0389453612.814.3659819127.030.39292221
4.75.3399469013.114.7669821927.831.19391691
4.95.5409484813.515.2679823328.532.09491138
5.25.8419500913.915.6689823129.332.89590563
5.46.1429517214.416.1699821330.133.79689966
5.76.4439533814.816.6709817930.934.79789349
6.06.7449550615.217.0719812731.835.69888710
6.27.0459567415.717.5729805832.736.69988052
Canola (Low Range)* Pulses per cubic foot
Notes:
Stated seed density is measured, and not customary commodity call
weight. If your seed has a significantly different density,
see “Density Adjustment” on page 38.
Table rates are for application from a single hopper at a time
(whether or not both are loaded with the same material). For
application of the same material from both hoppers simultaneously,
do not use the target rate data. First divide the target rate by two,
and use the setting for that half rate. Use that target rate for
calibrating each meter.
Cal.
Const.*
31292
2012-01-03ContentsAppendix167-085B
18Great Plains Manufacturing, Inc.ContentsAppendixVRG Air Drills
Canola
Standard Stars, High Range
Final Drive Range GearsStars Per OutletSeed DensityRemarks:
High Range20.64 kg/litre
54T Driving; 17T Driven(standard)49.5 pounds per bushel
Stated seed density is measured, and not customary commodity call
weight. If your seed has a significantly different density,
see “Density Adjustment” on page 38.
Table rates are for application from a single hopper at a time
(whether or not both are loaded with the same material). For
application of the same material from both hoppers simultaneously,
do not use the target rate data. First divide the target rate by two,
and use the setting for that half rate. Use that target rate for
calibrating each meter.
31293
167-085BContentsAppendix2012-01-03
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