Fertilizer - Rate Calibration - Landoll 5531 Operator's Manual

OPERATION AND MAINTENANCE
Fertilizer – Rate Calibration
1. Dry fertilizer can be affected by type, density, size,
humidity, and field conditions. Operator should verify
actual fertilizer rate output before planting.
2. To check the fertilizer rate:
a. With a desired fertilizer rate and known density
apply the above conversion factor and select rate
from chart. If density is not known, use desired
rate based on 65 lbs/ft
b. Adjust the sprocket ratio to the desired rate.
c. Select three fertilizer meters next to each other
and disconnect the rubber tubes from these
meters to be able to collect fertilizer.
d. Fill the fertilizer box with a sufficient amount of
fertilizer over the top of the three meters.
e. Lower the openers so the drive wheel clutch will
engage.
f. Place a jack under the appropriate drive wheel
and raise off the ground so the drive wheel may
be rotated by hand.
g. Rotate the drive wheel several times, until the
three meters begin to deliver fertilizer evenly.
h. With an empty container begin collecting the
fertilizer from the three 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.
i. Weigh (in pounds) the total amount of fertilizer
(less the container) and divide by 3 for an
average amount of fertilizer per meter.
FERTILIZER RATE = (AVG FERTILIZER WT) X 65896__
(NO. OF ROTATIONS) X (ROW SPACING)
4-24
3
from the chart.
3. Compare the actual fertilizer rate with the starting
rate and compensate for any variation. Repeat the
calibration until the desired fertilizer rate is achieved.
Adjust the sprocket ratios on the other sections to
match the calibrated setting.
4. Continue to monitor the fertilizer rate while planting.
Note the amount of acres planted versus the amount
of fertilizer added to the drill. If you are applying more
or less fertilizer than desired, adjust the metering rate
to compensate for field conditions and fertilizer.
F-716-1213 Edition