Great Plains 1625AHL Material Rate - Manual (Page 17)

Great Plains Manufacturing, Inc. Table of Contents Seed Rate Overview 13
2014-03-17 Table of Contents 411-020B
Meter Pressurization
Metric: data in U.S. customary units begins on page 16.
Start with pressures from below and/or on page 14 and
15, which are based on crop, and for corn, seed shape
and density.
Note: These are suggested initial (starting) pressures.
Adjust them up or down per the procedure in the
1625AHD and 1625AHL Operator Manual.
Start with pressures from below and on page 15, which
are based on crop, and for corn, seed shape and density.
Note: These are suggested initial (starting) pressures.
Adjust them up or down per the procedure in the
1625AH Operator Manual.
Corn: Reading a Pressure Chart (below, next page)
1.
Pick the chart based on seed shape (flat, round).
Example: large round corn
2. Pick a line based on seed size (large, small).
Example: the right line below
3. Find the seed density on the bottom scale.
Example: 2800 seeds/kg
4. Read the suggested starting pressure on the left
scale, where the line (example shown as dotted
gray) intersects the density.
Example: 3.4 inches of water
Initial seed inlet Shutter for corn is: 3
Initial Meter Pressurization: Canola
1.5 inches of water (any seed density)
Initial seed inlet Shutter: 1.5
Initial Meter Pressurization: Cotton
1.5 inches of water (any seed density)
Initial seed inlet Shutter: 2
Initial Meter Pressurization: Milo
1.5 inches of water (all disks, any seed density)
Initial seed inlet Shutter: 1.5
Initial Meter Pressurization: Soybeans
2.0 inches of water (84 cell disk, any seed density)
3.0 inches of water (168 cell disk, any seed density)
Initial seed inlet Shutter: 2
Initial Meter Pressurization: Sunflower
Disk: 817-851C SUNFLOWER OIL LARGE
18700 seeds/kg (or fewer)
18700 - 15400 seeds/kg
15400 - 12100 seeds/kg
12100 seeds/kg and fewer 1.25 inches of water
1.75 inches of water
2.25 inches of water
Adjust pressure as needed for desired population.
Initial seed inlet Shutter: 2