Great Plains 80403P Operator Manual - Manual (Page 17)

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15 8/1/01 Great Plains Mfg., Inc.
Section 4 Adjusting Planting Rates
8-Row 36", 38", 40" & 10-Row 30" 3-Point Wide Row Planter 401-020M
If the planting population is significantly different than
the desired planting population, make the following
checks:
•
Check the sprocket combination in the transmission,
refer to the " Planting Rates for Finger Pickup Corn
Meter Chart" in this section on page 21 and 22.
•
Check the tire pressure in the gauge wheels, see Spec-
ification in " Section 9 Specifications" on page 33.
•
Check for meter malfunction, see Finger Pickup Corn
Meter in "Section 5 Troubleshooting" on page 25.
Planting recommendations
To get the best planting results, follow these
recommendations:
•
Plant at 5 mph
•
Add 1 teaspoon of graphite to each seed hopper.
•
Maintain tire pressure in the gauge tires.
•
Replace worn meter parts.
Adjusting Granular Chemical Rates
The optional chemical applicators are adjusted by
varying the opening on the chemical meter housing. The
field check is very important because temperature, hu-
midity, speed, ground conditions, flowability of
chemicals, and obstructions affect the application rate.
!
WARNING!
Agricultural chemicals can be dangerous if not selected and
Example: (for one row)
•
30" row spacing
•
17' 6" of seed trench measured off
•
24 seeds counted in measured
distance
24 Seeds Counted X 1000 =
24,000 Plant Population Per Acre
handled with care. Always read and follow directions sup-
plied by the chemical manufacturer.
To adjust the chemical rate do as follows:
1. Select a setting from the "Granular Chemical Rate
Chart" on pages 16 through 24, as a starting point.
2. Slide the handle on the meter to the setting,
see Figure 4-2 and Granular Chemical Rate Chart
on pages 23 and 24.
3. If the meter has a knob, turn until the display shows
the appropriate number, see Figure 4-2 and Granu-
lar Chemical Rate Chart on pages 16 through 20.
4. Fill the hoppers with chemical.
5. Attach a plastic bag to each chemical
diffuser.
6. Drive 1320’ or a 1/4 of a mile at a normal planting
speed.
7. Weigh the contents of the bag in ounces.
8. Multiply ounces by the factor in the table to determine
the pounds per acre.
9. If required, adjust the meter setting and repeat steps
4 through 7 until the desired rate is reached.
Row Planter Ounces
40" .62
38" .65
36" .69
30" .83
Chemical Meter
Figure 4-3
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