Great Plains 1007NT Material Rate - Manual (Page 7)

07/08/2009 150-290B
Great Plains Mfg., Inc.
5
Reading a Seed Rate Chart
1. Find your seed. Charts are in alphabetical order by
seed name. Charts covering more than one seed
may be out of order.
For Sudan, see Flax.
The example presumes you desire to plant:
Barley at 60 pounds per acre.
If your seed is not listed, find one with similar size,
shape and density. Density of the test seed used to
develop the chart appears under the right end of the
handle scale values.
2. There are multiple rate rows, based on Row Spacing
and Drive Type, and the rates may overlap. Use the
chart where your desired rate is closest to 50 on the
Seed Rate Handle scale.
3. Use only the rows for your Row Spacing.
In our example, the row spacing is 7.5in., and the
table row that provides 60 lbs/ac near scale setting
50 is Drive Type 2.
4. Locate your desired seed rate in the table row.
In the example the rate closest to 60 is:
61.4
5. Note the Seed Rate Handle setting required, at the
top of the column at that seed rate. This is the initial
value set on the Seed Rate Handle. See page 4.
In the example, start with a handle setting of:
45
and calibrate. When a target rate falls halfway
between handle settings, you can adjust the handle
slightly to compensate, but calibration is apt to result
in further adjustment anyway.