Great Plains YP1625 Material Rate - Manual (Page 10)

Great Plains Mfg., Inc.
6
401-263B 11/23/2011
Checking Planting Rate
Singulated seed charts are based on cleaned and sized
seed singulated with the recommended meter and wheel
or finger count. Extreme seed size variations, foreign
material and tire pressure 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. You
can verify your setup and planter performance by mea-
suring seed placement and spacing over a relatively
short distance.
Null4:
The columns to the right provide example data for a rate
check, in U.S. customary units and a similar example
metric units.
Checking Singulated Rates
1. Determine the sample distance to check. Find your
row spacing in the table at right.
2. Note the number of rows to sample. Adjust the plant-
ing 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. Decide whether to use 1/1000th or 1/200th of an
acre or hectare as the sample size. 1/200th provides
a more accurate sample.
4. Configure the planter for the chart rate, either using
the chart settings for sprockets, or, with hydraulic
drive, selecting the rate on the seed monitor.
Null4:
Figure 7
Furrow Check
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US Example:
Planter: YP1625-1630
Crop: Soybeans
Density: 3000 seeds/lb
Meter Wheel: 403-124D
Target Population:
123,000 seeds/acre
Metric Example:
Planter: YP1625-1670
Crop: Soybeans
Density: 6614 seeds/kg
Meter Wheel: 403-124D
Target Population:
331 000 seeds/hectare
Range Sprockets:
DRIVER: 30
DRIVEN: 30
Transmission Sprockets:
DRIVER: 17
DRIVEN: 28 Range Sprockets:
DRIVER: 30
DRIVEN: 30
Transmission Sprockets:
DRIVER: 17
DRIVEN: 28
Maximum Planting Speed:
6 mph
Maximum Planting Speed:
10 kph
Chart Seed Spacing:
1.7 in
Chart Seed Spacing:
4.3 cm
Rows to Sample Length of Sample Run
Row Row 1/1000th 1/200th
Spacing Number Acre Acre
15in Single 2 17ft 5in 87ft 1in
30in Twin 1 pair 17ft 5in 87ft 1in
36in Twin 1 pair 14ft 6in 72ft 7in
20in Single 1 26ft 2in 130ft 8in
36in Single 1 14ft 6in 72ft 7in
30in Single 1 17ft 5in 87ft 1in
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