Great Plains 2510HDP Operator Manual - Manual (Page 43)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 39
2013-10-21 Table of Contents Index 118-245M
Checking Singulated Seed Rate
Without a seed monitor, singulated rate checking is done
by sampling actual seed delivery for a few rows and a
short distance.
If using hydraulic drive skip step 1.
1. Using the Seed Rate charts, install the correct seed
meters and wheels, and set the Range and
Transmission sprockets per the chart.
2. Check the sampling table at right for the number of
rows or twin pairs
a
to check. Pick which rows to test
on the drill. Rows in tire tracks are suggested, as
seed is less likely to get buried.
If the seed box is empty, and you have seed corks
available, block adjacent rows. Otherwise, shut off
those rows at their sliding seed tube caps.
3. Prepare a small amount of seed equivalent to
approximately 1/200th acre. Load it over the openers
to be tested.
If seed is already loaded across all rows, shut off the
rows not tested at their sliding seed tube caps
(page 54), and disengage those meters at the drive
couplers (page 55).
4. If Seed-Lok seed firmers are installed, lock them up
on the sample rows.
5. If you have lock-up pins available, lock-up the rows to
be sampled (page 56) so that they don’t plant and
bury the seed to be counted.
If pins are not available, at the sample rows, set the
down pressure to minimum (cam out of notch,
page 51), and set the opener depth to minimum at
the T-handle (page 65). Seeds will be deposited at or
near the surface.
6. From the sampling table, determine the distance to
plant.
Lower the drill and drive forward at proposed
planting speed.
7. Count the number of seeds in the active rows.
Multiply by 200 or 1000, depending on the row length
used for the sample.
This is your population for one acre (or hectare).
a. Both rows of a twin row are counted as a single row.
Row Spacing
inches
(cm)
Rows
to
Count
Distance for
1/1000th
Acre
(Hectare)
Distance for
1/200th Acre
(Hectare)
Single Row 7.5in
(19.1cm)
4
17 ft 5in
(13.09m)
N/R
Single Row 10in
Twin Row w/Split
(25.4cm)
3
17ft 5in
(13.09m)
N/R
Single Row 15in
(38.1cm)
2
17ft 5in
(13.09m)
87ft 1in
(65.62m)
Single Row 20in
(50.8cm)
1
26ft 2in
(16.69m)
130ft 8in
(98.43m)
Single Row 30in
Twin Row 30in
(76.2cm) 1 row
1 pair
17ft 5 in
(13.09m)
87ft 1in
(65.62 m)
Example (step 2):
2510HDP-2910 operating as 20in single row
Sample 1 row
Example (step 6):
Plant a distance of 26ft 2in
Example (step 7):
Seed count is 165
Population is 33,000 seeds/ac (165x200)