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Section 3: Adjustments
PS25120 Primary Seeder 313-156M
8/21/06
Land Pride
Table of Contents
Calibrating & Adjusting Seeding Rate
1. Using the seeding rate charts, beginning on page 21
to determine the seeding rate for the seed you will be
planting and make the following adjustments.
c. On the right hand side of your seeder is the drive
system. Change the speed change sprocket, if
necessary, to the desired drive type, and adjust
the drive idler, see Figure 3-3 on page 19.
d. Locate seed rate adjustment handle, Figure 3-4,
at the rear of the seeder, and move it to the
indicator number obtained from the seeding rate
charts. For best results, first move seed rate
adjustment handle all the way to the left. Then
move the handle to the desired setting, moving
from a lower to a higher number.
Seed Rate Adjustment
Figure 3-4
2. Secure the seed broadcasting handle at the rear of
the seeder to the proper setting, Figure 3-2 on page
18.
3. There are many factors which will affect seeding
rates: seed treatment, weight of seed, surface
condition of seed, and roller wheel slippage. Minor
adjustments will probably be needed to compensate
for the above 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.
NOTE: Seeding rates will vary greatly with
variations in sizes of seeds, although the seeding
rates listed in this manual are based on an average
seed size, we recommend that you test and adjust
your primary seeder using the procedures listed
below to help insure an accurate seeding rate.
IMPORTANT: The bold italic areas on the seed rate
charts are settings which may result in inconsistent
rates or damage to feed cups.
11648
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 and support the seeder so the drive roller
assembly will rotate.
c. Rotate the drive roller assembly to see that the
drive system is working properly and that feed
cups are free from foreign matter.
d. Place a container under the three feed cups to
gather the seed as it is metered.
e. Rotate the drive roller assembly 25 rotations to
get 1000 square feet. To get on acre rotate drive
roller assembly until one acre has been tallied on
the acremeter or approximately 1071 rotations.
Check the three feed cups to make sure each cup
has plenty of seed coming into it.
f. Weigh the seed which has been metered. Divide
by three. This will give you the ounces/pounds
metered by each feed cup. Multiply by the number
of cups on your seeder to arrive at the total
pounds per 1000 square feet or total pounds per
acre that your seeder would meter at the setting. If
this figure is different than desired, set your feed
cup adjustment handle accordingly.
6. You may want to repeat the calibration procedure if
the results of your calibration vary greatly from the
suggested settings on the chart.
To determine seed rates for seeds not listed on the
charts, compare weight and size to those listed and use
a similar setting. Follow steps 5 and 6 to calibrate the
seed rate.
Field conditions will affect seeding rates. When seeding
check the amount of seed you are using by noting acres
or square feet seeded, amount of seed added to seeder,
and level of seed in the seed box. If you suspect that you
are seeding more or less seed than desired, and you
have accurately calibrated the seeder to your seed, you
may need to adjust the seeding rate slightly to
compensate for field conditions.
This seeder is equipped with a four-position feed cup
door on each feed cup. The highest handle position is for
small seeds, the second and third positions are for larger
seeds. For application with this seeder, you will only
need to use the highest position. Make sure all handles
are in the same position before seeding. The wide open
position will allow complete clean out of the feed cup.
NOTE: DO NOT open the cup to the wide open
position with seed in the box unless complete clean
out is desired.