Great Plains NTA2007 Material Rate - Manual (Page 15)

Great Plains Manufacturing, Inc. Contents Appendix 13
2012-01-03 Contents Appendix 167-085B
Seed Rates
Reading Seed Rate Charts
1. Find the chart for your seed.
Note: There may be more than one table for the seed.
Other tables require either a different Final Range,
or different flute “stars”, or both. Higher Star count,
and Small Seeds charts are in the Appendix.
2. Verify that the chart is for your star configuration
(number of flutes at each meter outlet). 2 full depth
stars per drop is standard.
Optional kits are available to increase to 3 or 4 deep
stars or to use 2 shallow (Small Seeds) stars.
See “Changing Flute Stars” on page 12.
3. Determine the Final Drive Range gearing required.
See “Seed Meter Final Drive Range” on page 5.
Note: The final drive range gearing may be different for
the fertilizer hopper and the seed hopper. If
applying the same material from both hoppers, set
both gear sets identically.
4. Note the reference Seed Density
a
used to generate
the chart data. Enter this on the seed monitor only if
you do not know your actual density.
5. Find your target Seed Rate.
If planting the same seed from both hoppers
simultaneously, divide your target rate in half before
consulting the table.
6. Set the Variable Rate Gearbox control arm to the
number of degrees specified in the chart under
“Gearbox Setting”.
Note: Charts begin at setting 20.
Settings below 20 are not recommended, other
than zero (0), which may be used to temporarily
shut off flow from that meter.
7. Enter the Calibration Constant (“Cal. Const.”) on the
seed monitor. See manual 167-085B-ENG for
Calibration Constants in pulses per litre.
Wheat (Triticum)
Standard Stars, High Range. Higher rate Wheat ch
Fi i R G S P O
(Triticum)
d Stars, High Range. Higher rate Wheat charts, requiring
Drive Range Gears Stars Per Outlet Seed D
g k 9 7 . 0 2 e g n a
ving; 17T Driven (standard) 61.5 po
Wheat (Triticum)
Standard Stars, High Range. Higher rate Wheat cha
Final Drive Range Gears Stars Per Out
2 e g n a R h g i H
54T Driving; 17T Driven
(standard)
a. If your actual seed density is significantly different, see “Density Adjustment” on page 38.
In general, Calibration automatically compensates for typical differences between actual and reference (chart) seed densities.
tars Per Outlet Seed Density Rema
e r t il / g k 9 7 . 0
See t
tandard) 61.5 pounds per bushel
R S R d S l
d e e S e t a R d e e S
c a / s b l a h / g k c a / s b l
- 100.2 112.3 46 77955 238.5
699 104.7 117.3 47 77990 243.7
902 109.2 122.4 48 78027 248.8
092 113.9 127.6 49 78067 253.8
268 118.5 132.9 50 78110 258.8
431 123.3 138.2 51 78159 263.6
al.
nst.*
Gearbox
Setting
Cal.
Const.*