Great Plains 3PNG15 Material Rate - Manual (Page 11)

8/17/2006 202-553B
Great Plains Mfg., Inc. 11
IMPORTANT! For Native Grass Mix Only
Powdered graphite must be mixed with the native
grass seed mix for proper seed flow and metering.
Recommended usage:
Sprinkle 1/3 cup of graphite per 6 ft. of seed box on
top of the native grass seed mix.
For humid planting environments, double or triple
rate as needed.
Standard Rod Agitator
Standard Rod Agitator
The native grass attachment comes standard with
the agitator shown.
I MPORTANT: To prevent damage to the Na-
tive Grass box agitator and its drive compo-
nents, do not transport drill with Native Grass
box loaded with seed.
k. Weigh metered seed. Subtract initial
weight of container. Divide by three. Multi-
ply by the number of openers on your drill
to determine the total pounds per acre. If
this figure is different than desired, change
sprocket combinations, using the native
grass seed chart for reference.
4. You may want to repeat the calibration proce-
dure if your results vary greatly from the seed
rate chart.
The attached charts are to be used as a refer-
ence 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 start-
ing point only.
NOTE: When drilling, check the amount of seed
you are using by noting acres drilled, amount of
seed added to drill and level of seed in drill box. If
you suspect that you are drilling more or less than
desired, and you have accurately calibrated the
drill to your seed, you may need to change your
sprocket arrragement to compensate for your field
conditions.
Equations for calibrating seed rate:
measured seed empty container –
3 (number of seed cups measured)
---------------------------------------------------------------------------------------------- pounds per seed cup =
pounds per seed cup number of openers × pounds per acre =
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