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Great Plains
| 411-332M | 2019-02-19
54
3P3025AH
Adjustments
9. During the first pass, take note of the average
populations reported on the optional planter monitor.
If the reported planter monitor population varies from
your intentions by a significant amount, it is
imperative to perform a furrow check.
For serious rate variances, for which the source of
the problem and the solution are not quickly
determined, see “
If the population is only slightly low, the problem can
be skips (periodic empty disc pockets). If slightly
high, the problem can be doubles (period pockets
with double seed). An adjustment to the meter
pressurization may correct either condition (see
step 12).
10. Resume planting.
A small varying population deviation between rows is
normal. If a row is consistently running lower or
higher than the other rows, it could indicate a meter
or seed sensor problem that needs attention.
Population Troubleshooting Charts
11. Continue to monitor Meter pressurization.
When oil reaches operating temperature, fan speed
can change. Expect to make periodic adjustments to
fan circuit to maintain ideal Meter pressurization.
12. Skips:
If all else is correct, and the overall average
population is running low (or there are gaps upon
furrow check), the cause may be seeds falling out of
disc pockets before delivery to the seed tube.
Increase Meter pressurization to correct this.
13. Doubles:
If all else is correct, and the overall average
population is running high (or there are double seeds
upon furrow check), the cause may be two seeds in
some disc pockets at delivery to the seed tube.
Decrease Meter pressurization to correct this.
Small seeds, such as Milo, may be under-reported by
the planter monitor. Use the “
” below to verify seed status at the disc pockets.
Furrow Check:
Expose several seeds in each of several rows, being
careful not to disturb their relative positions. Measure
and average the distance between seeds. Compare this
to the predicted seed spacing for the population in the
Seed Rate Manual
.
Any instances of no seed where expected may be a
sign of “skips”. Finding two seeds at the same spot is
clear indication of “doubles”.
Insufficient Meter pressurization, or unusually rough
fields, can increase the incidence of empty pockets.
Rule out other causes (such as skipping chains, meter
starvation, incorrect meter discs) before adjusting meter
pressurization to reduce apparent skips.
Excess Meter pressurization can increase the incidence
of doubles. Be sure to rule out other causes (such as
incorrect meter discs) before adjusting meter
pressurization to reduce doubles.