Great-plains 2000 Material Rate User Manual download pdf (Page 5)

Great Plains Mfg., Inc.

05/30/2008 118-389B

Checking Main Box Seed Rate

Check Seeding Rate

1. Record weight of an empty container large enough

to hold seed metered for one acre.

2. Place several pounds of seed over three seed

cups on an outside end of drill box. Pull seed

tubes off these three openers.

3. Raise drill off the ground. If using a hitch, insert

transport lock pins or turn 90˚ hydraulic lock valve,

depending on hitch style.

4. Turn drive gauge wheel a few turns to ﬁll cups with

seed. Turn wheel until seed drops to the ground

from all three cups.

5. Place a container under the three seed tubes to

gather seed as it is metered.

6. Turn drive gauge wheel for one acre:

450 rotations on a 12-foot drill,

364 rotations on a 15-foot drill, or

283 rotations on a 20-foot drill.

Check that the three seed cups have plenty of

seed coming into them.

7. Weigh the metered seed. Subtract initial weight of

the empty container. Divide by three for the

amount metered by each seed cup, then multiply

by the number of drill openers for the pounds-per-

acre seeding rate. If this ﬁgure is different than

desired, adjust seed-rate handle and recheck the

rate.

Note: If your results vary greatly from the charts, you

may want to repeat the calibration procedure.

8. When drilling, note acres drilled, amount of seed

added and level of seed in drill box. If you are

seeding more or less than desired, adjust seeding

rate slightly to compensate for ﬁeld conditions.

Drill

Model

Revolutions for One

Acre Hectare

12-foot 450 1112

15-foot 364 900

20-foot 283 699

1 2 3 4 5 6 7 8 9 10 ... 29 30

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Great-plains 2000 Material Rate User Manual Page 5

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