Section 4: Adjustments
AP-PS2072 & AP-PS2086 Primary Seeders 313-805MK
7/15/19
25
Seeding Adjustments
1.
Using the seed rate charts, beginning on page 26,
determine the seeding rate for the seed you will be
planting and make the following adjustments.
2.
Locate the seed rate adjustment handle at the rear of
the seeder and move it to the indicator number
obtained from the charts, see Figure 4-1. For best
results, first move adjustment handle all the way to
the left. Then move the handle to the desired setting,
moving from a lower to a higher number.
3.
There are many factors which will affect seeding rates:
seed treatment, weight of seed, surface condition of
seed or roller slippage. Minor adjustments may be
needed to compensate for these factors.
4.
The seed rate charts are based on average size seed.
This may differ from the seed you are using. Use the
seed rate charts as a guide. For lighter than average
seed, the setting should be increased. For heavier
than average seed, the setting should be decreased.
5.
Complete the following procedure to calibrate the rate
for your specific seed.
a.
Place several pounds of seed over three of the
seed cups at the outboard end of the seeder.
b.
Raise the seeder off the ground and support
safely, leaving the rear roller to rotate freely.
Rotate the rear roller to see that the drive system
is working properly and the seed cups are free
from foreign matter.
c.
Place a drop cloth under the seeder to gather the
seed as it is metered.
d. Rotate rear roller the number of rotations noted in
table above. Be sure to check the three feed cups
to make sure each cup has plenty of seed coming
into it.
e. Weigh the seed which has been metered out and
divide that weight by three to get the number of
pounds or kilograms per seed cup.
f. Next, multiply number of pounds or kilograms per
seed cup by the number of seed cups on the
seedbox to arrive at weight “A”.
g. If Weight “A” is calculated based on:
1/10 acre, then “A” x 10 = lbs/acre
1000 sq ft, then “A” x 43.56 = lbs/acre
1000 sq ft, then “A” x 1 = lbs/1000 sq ft
Model
No
No. of Rear Roller Rotations to Cover
1/10
Acre
1000 Sq.
Ft.
1/20
Hectare
100
Sq. M
PS2072
374
86
461
93
PS2086
312
72 385
77
NOTE:
If total weight for 3 seed cups is in
ounces, divide that weight by 48 instead of 3.
1/20 hectare, then “A” x 20 = kg/hectare
100 sq meters, then “A” x 100 = kg/hectare
100 sq meters, then “A” x 10 = kg/1000 sq m
h. If calculated seed rate is different than the
suggested settings in the charts, then increase or
decrease the seed cup adjustment lever.
6.
Repeat calibration procedure if the results of the
calibration vary greatly with the chart.
Seed Rate Adjustment Lever
Figure 4-1
NOTE:
Field conditions will affect seeding rates.
Check amount of seed being used by noting size of
area being seeded, amount of seed added to the
seeder, and level of seed in the seedbox.
It may be necessary to make minor adjustments to
the seeding rate if the seeder has been accurately
calibrated and is seeding more or less seed than
desired.
IMPORTANT: Do Not
operate seed rate adjustment
lever at -0- setting. Seed cup damage may occur.
Do Not
set seed rate adjustment lever to the widest
open position with seed in the box unless complete
clean out is desired
.
72136
Seed Rate Adjustment Lever
Section 4: Adjustments