Great Plains 3S-5000HDF Material Rate - Manual (Page 8)

6 00/00HD Min-Till Folding Drill Table of Contents Main Box Rates Great Plains Manufacturing, Inc.
195-325B Table of Contents Main Box Rates 2012-06-04
11. Divide the net seed weight by three. Multiply by
number of openers on your drill to determine the
total of pounds-per-acre seeded.
12. The Seed Rate Handle scale is a percentage of
meter opening, and is quite linear near scale center.
Calculate a new scale setting based on the test.
Note: You may want to repeat calibration procedure if
your results varied greatly from the Seed Rate
Chart, or if you must operate near the ends of the
Seed Rate handle scale (0-20 or 90-100).
13. Set the center and right drill sections to match the
now-calibrated left section.
14. With calibration complete, Reinstall fertilizer chain (if
removed), reconnect seed hoses, and lower gauge
wheel to ground.
When drilling, check seeding rate by noting acres drilled,
amount of seed added to drill and seed level in drill box.
If you are seeding more or less than desired, adjust rate
slightly to compensate for field conditions.
Reading a Seed Rate Chart
Charts in U.S. customary units begin on page 8.
Metric charts begin on page 25.
1. Find your seed. Charts are in alphabetical order by
seed name. Charts covering more than one seed
may be out of order.
For Rape, see Alfalfa.
For Sudan, see Flax.
This example presumes we desire to plant Barley at
48 pounds per acre with a 7.5 inch drill.
There are multiple charts for some seeds, and the
rates may overlap. Use the chart where your desired
rate is closest to 50 on the Seed Rate Handle scale.
In our example, that would be Barley chart 2 of 3.
If your seed is not listed, find one with similar size,
shape and density. Density of the test seed used to
develop the chart appears under the right end of the
handle scale values.
For example:
on the 63-row 7.5 inch drill:
54.6 lbs/ac
54.6
2.6
3
------ 63 ×
= MeasuredRate
NetWeight
3
------------------------- OpenerCount
×
=
For example:
the target rate was 49 lbs/ac, and the initial scale 40:
the new scale setting is:
36
35.9
49
54.6
--------- 40 × =
NewScale
TargetRate
MeasuredRate
--------------------------------- OldScale ×
=
Barley (2 of 3)
7.5 inch 0 4 6 9 12 15 18 2
10 inch 0 3 5 6 9 11 13 1
Drive Type
2 0 5 10 15 20 25 30 3
Seed Rate Handle Setting
25 30 35 40 45 50 55 60 65 70 75
e r c A r e P s d n u o P n i e t a R d e e S (
65 70 75 80 85 90 95 100
e (based on 51 pounds/bushel)
104 114 123 133 142 152 154 156