3.09 - Seed (or Fertilizer) Hopper Calibration
There are two adjustments to be made to calibrate the aerator-overseeder hoppers:
1. The amount of gear inside the seed cup housing.
2. The position of the cleanout gate of each individual seed cup.
This system allows use of a wide variety of seeds.
The output of seed differs greatly depending on their size, density, dampness,
and shape. Other output factors depend on the conditions in which the machine is
operating such as, in slick conditions where the roller may slip.
Table 1 lists the distribution rate in pounds per acre for various seeds that may be used
in the aerator-overseeder. Keep in mind that the hopper and seed cup openings
measure in volume and not in weight. Due to the many variables, the distribution rate
when using Table 1 is not always accurate. Only a test run will help determine if the
desired amount of seed is being spread.
TABLE 1 - AMOUNT OF SEED DISTRIBUTED IN LB/ACRE
5234844323933533022652251741409644
Vetch
66961755150045038233028021316111043
Alfalfa
50046441638034329425922318613910354
Lovegrass, Sand
53649844841037532528625020016312268
Lovegrass, Weeping
1421321191089884736348392814
Wheatgrass, Crested
1581451301171058976644836247
Wheatgrass, Western
4384063633303002572241931501188738
Bermuda (hulled)
224217194176155131109906343250
Buffalo grass
57253047443238933429125019415111051
Clover, Red
69764457552347140135029722817612354
Clover, White
210206194176158134114957152304
Fescue K-31
26124121519617714912810983624316
Fescue, fine blade turf type
375346309281252214187158120926427
Ryegrass,
Perennial
341315279254228193166140105795419
Ryegrass, Annual
22321219417816113812210581614318
Bluegrass, Kentucky
306290268251230202182156124897134
Bentgrass
65.554.543.532.521.510.5
Calibration handle positionSeed type
Use Table 2 and 3 to determine if the rate you are getting is correct.
There are two ways of setting the calibration on your aerator-overseeder:
1. With the machine stopped and raised, or
2. With the machine attached to the tractor and working.
To set the calibration with the machine stopped, do the following:
1. Support the machine securely, but in a way to allow the roller to turn freely.
2. Fill the hopper with the seed or fertilizer you intend to spread.
OPERATION 18 FRONTIER
A
ERATOR-OVERSEEDER OPERATOR’S MANUAL
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