Great Plains YP2425F-2470 Material Rate - Manual (Page 6)

4 YP2425 & YP2425F Table of Contents Appendix Great Plains Manufacturing, Inc.
401-406B Table of Contents Appendix 2013-09-23
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
measuring seed placement and spacing over a relatively
short distance.
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
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. Decide whether to use
1 ⁄
1000
th
or
1 ⁄
200
th
of an acre or
hectare as the sample size.
1 ⁄
200
th
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.
Figure 4
Furrow Check
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US Example:
Planter: YP2425-2430
Crop: Soybeans
Density: 3000 seeds/lb.
Meter Wheel: 403-124D
Target Population:
123,000 seeds/acre
Metric Example:
Planter: YP2425-2470
Crop: Soybeans
Density: 6614 seeds/kg
Meter Wheel: 403-124D
Target Population:
438 000 seeds/hectare
Maximum Planting Speed:
6 mph
Maximum Planting Speed:
9.6 kph
Chart Seed Spacing:
1.7 inch
Chart Seed Spacing:
3.3 cm
Rows to Sample Length of Sample Run
Row 1/1000th 1/200th
Spacing Number Hectare Hectare
70 cm Single 1 14.29 m 71.43 m
Row 1/1000th 1/200th
Spacing Number Acre Acre
15 in. Single 2 17 ft. 5 in. 87 ft. 1 in.
30 in. Twin 1 pair 17 ft. 5 in. 87 ft. 1 in.
20 in. Single 1 26 ft. 2 in. 130 ft. 8 in.
30 in. Single 1 17 ft. 5 in. 87 ft. 1 in.
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