Seed rate overview, Kernels per pound, Seed rate setting summary – Great Plains 1625AHL Material Rate User Manual
Page 6: Population reference information, Seeds per unit, Seed spacing
411-020B
2014-03-17
2
1625AHD/AHL
Great Plains Manufacturing, Inc.
Seed Rate Overview
The information in this section covers important setup
and checking information that applies to the Air-Pro
®
meter and 1625AHD and 1625AHL ground drive system.
Seed Rate Setting Summary
1.
For your crop, determine your intended population, in
seeds/acre or seeds/hectare. If you know only the
seed spacing or population in pounds/acre, consult
the charts on page 2 through page 4.
2.
For your crop, population and desired field speed,
select the correct seed disk:
“Air-Pro
Meter Disk Selection (USc)” on page 8
3.
Set meter rate. See instructions for each monitoring
mode (page 22 or 61).
4.
For staggered twin row, time row pairs using:
“Sprocket Indexing (Stagger)” on page 66
5.
Set initial seed inlet shutter per seed rate chart.
Set initial meter pressurization per page 13, 18.
6.
Configure the DICKEY-john
®
PM400 seed monitor
for the crop (covered separately for each planting
mode).
7.
Verify your planting rate per the instructions at:
“Checking Planting Rate” on page 19. If the results
are consistent with your setup, plant the crop.
Population Reference Information
Seeds per Unit
If only population weight (pounds/acre or
kilograms/hectare) is known, obtain the population count
by multiplying the population weight by the
“Kernels per pound” or “Kernels per kg” value from the
seed container.
Seed Spacing
If only seed spacing is known, use the tables on the next
two pages to determine population.
Note: Tables may show row spacings not presently
available on model 1625AHD and 1625AHL.
Kernels Per Pound
Figure 2
Air-Pro
®
Seed Meter
29626
Example: Milo
Target rate:
4.5 pounds/acre
Seed density:
14500 seeds/pound
Population:
= Rate
× Density
= 4.5
× 14500, or:
65250 seeds/acre
80,000 Seed
Kernels
80,000 Seed
Kernels
Bag Weight
per Pound
Bag Weight
per Pound
67.5 lbs
1,185
45.0 lbs
1,778
65.0 lbs
1,231
42.5 lbs
1,882
62.5 lbs
1,280
40.0 lbs
2,000
60.0 lbs
1,333
37.5 lbs
2,133
57.5 lbs
1,391
35.0 lbs
2,286
55.0 lbs
1,455
32.5 lbs
2,462
52.5 lbs
1,524
30.0 lbs
2,667
50.0 lbs
1,600
27.5 lbs
2,909
47.5 lbs
1,684
25.0 lbs
3,200
29649