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IMPORTANT:
Rates shown in charts are only to be used as a guide. See RATE CHECK-METHOD 1 or RATE CHECK-METHOD 2 in this section for accurate rate test.
Rates per acre are determined by adjusting seed shifter lever to proper notch on index.
Rate charts are based on standard densities of materials being used. See Standard Densities chart in this section for a listing.
1.
Find actual density of product used. See USING DENSITY METER in this section.
2.
Locate standard density on Standard Density Chart and divide by actual density to get the conversion factor.
FORMULA:
Standard Density (Rate Chart) ÷ Actual Density (Density Meter) = Conversion Factor
3.
Multiply desired metering rate by the conversion factor. Locate that value on rate chart, match it with
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seed index value and adjust seed shifter to value. See SETTING GRAIN SHIFTER in this section.
EXAMPLE:
-
Product: Wheat
-
Standard Density: 774 kg/m
3
(48.2 lb/ft
3
)
-
Actual Density: 721 kg/m
3
(45 lb/ft
3
)
-
Desired Rate: 83 kg/ha (73 lb/acre)
-
Drill: 19 cm (7-1/2 in.) row spacing
1.
Find conversion factor:
774 kg/m
3
(48.2 lb/ft
3
) ÷ 721 kg/m
3
(45 lb/ft
3
) = 1.07 Conversion Factor
2.
Multiply desired rate by conversion factor.
82 kg/ha x 1.07 = 87.74 kg/ha
(73 lb/acre x 1.07 = 78.11 lb/acre)
3.
Find value, 87.74 kg/ha (78.11 lb/acre) on rate chart and move seed shifter to "18", which is the closest setting for determined value.
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