Great Plains 3P605NT Material Rate - Manual (Page 15)

Great Plains Mfg., Inc.
13
05/18/2007 151-061B
4. Turn gauge wheel or crank several times to fill
seed cups with seed. Turn wheel or calibration
crank until seed falls to the ground from each cup.
5. Place empty container under the three seed tubes
to gather seed as it is metered.
6. Rotate gauge wheel or calibration crank until one
acre has been tallied (see table at right).
7. Check that the three seed cups have plenty of
seed coming into them.
8. Weigh metered seed. Subtract initial weight of
container. Divide by three. Multiply by the number
of openers on your drill to determine total pounds
seeded per acre. If this figure is different than
desired, change your sprockets and drive type
accordingly.
Note: You may want to repeat the calibration proce-
dure if your results vary greatly from seed rate chart.
IMPORTANT !
The charts are to be used as a reference to your own
native grass mix. All native grass mixes will vary so
this is why you must calibrate each mix using our
charts as a starting point only.
When drilling, check the amount of seed you are using
by noting the acres drilled, amount of seed added to
drill, and the level of seed in the box. If you suspect
you are drilling more or less seed than desired, and
you have accurately calibrated the drill to you seed,
you may need to change your sprocket arrangement to
compensate for your field conditions.
Rotations for One Acre
Drill Model Crank Gauge Wheel
605NT 935 935
3P605NT 913 1628
MeasuredSeed EmptyContainer –
3
---------------------------------------------------------------------------------- PoundsPerSeedCup =
PoundsPerSeedCup NumberOfOpeners × PoundsPerAcre =
Figure 8
3P605NT Calibration Crank
23392
Figure 9
605NT Calibration Crank
23389