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Seed Rate Calibration
1. The seed rate charts are in pounds per acre and
based on an average seed size
Several factors can influence seeding rates: seed
varieties, seed size, seed weight, seed treatment,
seed cleanliness, tire pressure, tire slippage, and tire
size.
NOTE
The operator must verify actual seed output before
planting to insure the desired seeding rate.
2. If the specific seed is not listed on the seed chart, pick
a similar seed size and check the seed calibration for
the desired rate.
3. To check the seeding rate:
a.Adjust the seeding rate handle and drive type to the
desired rate from the seed chart
b.Select three seed meters next to each other, and
disconnect the rubber seed tubes to be able to catch
the seed.
c.Fill the box with a sufficient amount of seed over the
three meters.
d.Rotate the drive wheel several times, until the 3
meters begin to deliver seed evenly.
e.With an empty container collect the seed from the
three seed meters as you rotate the drive wheel by
hand. Count the total number of rotations. Twenty
rotations would be a good starting point; more
rotations will produce more accurate results.
f.Weigh (in pounds) the total amount of seed and
divide by 3 for an average amount of seed per meter.
See Figure 4-11
for seed rate formula.
4. Adjust the seed meter rate to compensate for any
variation, and repeat the seed calibration until the
desired seeding rate is achieved.
5.
See Figure 4-11
for number of seeds per row
formula.
4-12
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Dry Fertilizer Combination Box
1. If the Grain Drill is equipped with the dry fertilizer
See Figure
4-11.
See Figure
4-11.
2. To change the fertilizer covers, remove the plastic
Figure 4-13: Fertilizer Box w/Cover Opening Forward
option, it will have a combination seed/fertilizer box.
The seed/fertilizer box is split for approximately 60%
(2 bu/ft) seed and 40% (1.25 bu/ft) fertilizer. The box
may be used for applying both seed and fertilizer, or
converted to use both compartments entirely for
seed.
a.To use the dry fertilizer option, the covers in the
bottom of the rear fertilizer compartment must have
the openings to the rear
close off openings to the seed compartment and allow
dry fertilizer to enter the fertilizer meters.
b.For increased seed capacity and non fertilizer use,
the covers should be reversed with the openings to
the front of the seed box, and the solid portion
covering the fertilizer meters
knobs holding each of the covers in place at the
bottom of the rear fertilizer compartment. Lift the
cover out, and reposition the cover with the openings
to the front or rear as desired. Insure the cover is slid
down to the bottom and reinstall the plastic knobs to
retain the covers.
FRONT OF SEED BOX
FERTILIZER OPENINGS
TO REAR
Figure 4-12: Fertilizer Box w/Cover Opening to Rear
FRONT OF SEED BOX
FERTILIZER OPENINGS IN
FORWARD POSITION
See Figure
4-12. This will
See Figure
4-13.
F-725-0122
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