Great Plains 1006NT Material Rate - Manual (Page 24)

Great Plains Mfg., Inc.
22
150-285B 04/20/2007
Fertilizer Rate
Fertilizer application rates will vary with fertilizer type,
density and particle size. Relative humidity and field
conditions can also affect application rates. The chart
on page 23 is based on material with a density of 65
pounds per cubic foot (1.04 kg/L) and average particle
size. Initially set rate according to the charts, then cali-
brate the drill to your material as described below.
Note: For drills built after October 1, 2005,
calibrate using gauge wheels or supplied
calibration crank.
For drills built before October 1, 2005,
calibrate using gauge wheels or order
calibration crank available through
your Great Plains Dealer.
1. To calibrate using gauge wheels, raise drill with
tractor hydraulics so drive wheels are off the
ground. To calibrate using supplied calibration
crank, attach crank to coupler on gauge wheel
jackshaft with retaining pin. Disengage lockout on
the drive wheels.
2. Rotate drive wheels or calibration crank to see that
metering system is working properly and free from
foreign material.
3. From the chart on page 23, find the setting num-
ber for your row spacing and desired application
rate. Rotate gate adjustment knob to the number
obtained from the chart.
4. Check that gauge-wheel tires are the correct size
and properly inflated. Refer to “Tire Inflation
Chart” in the operator’s manual.
5. Record the weight of an empty container large
enough to hold fertilizer metered for one acre.
6. Place several pounds of fertilizer over three fertil-
izer feed cups on outside end of drill box. Pull fer-
tilizer tubes off these three openers.
7. Turn gauge wheels or calibration crank a few turns
to fill feed cups with material. Continue to turn until
fertilizer drops to the ground from all three tubes.
Note: You can also rotate the gauge wheel jackshaft by
means of a wrench or socket. If rotating gauge
wheel jackshaft, disengage the lockout on the
drive wheel and use same number of rotations as
for rotating drive wheel.
8. Place a container under the three tubes to gather
metered fertilizer.
Figure 8
Calibration Crank
23386
IMPORTANT !
The fertilizer rate chart is for granular fertilizer with a
density of 65 pounds per cubic foot (1.04 kg/L). If
you are applying fertilizer with a different density,
use the density conversion chart.