Great Plains YP2425A Material Rate - Manual (Page 68)

66 YP2425A Table of Contents Metric Charts Great Plains Manufacturing, Inc.
401-626B Table of Contents Metric Charts 2012-02-29
Volumetric Furrow Checking Rate - Metric
a. Configure the planter for the approximate rate, based
on the charts.
b. Set the meter pressure to the chart value.
c. Prime the meters. See your planter Operator manual
for the steps.
d. Plant for a short distance, just until the air delivery
system is stabilized, and the meters are all delivering
seed.
e. Select one or more rows to sample.
f. Set the planting depth to shallow for the sample
row(s). Set the press wheels to minimum force. Use a
wire to tie up the press wheel assembly.
g. Resume planting for a short distance.
h. Use a sampled row length
a
of one meter.
Count the seeds.
i. Find the nearest “Seeds per Row Meter” in the table
for your row spacing.
j. Look up the Population, or “Kilograms per hectare”.
a. You can interpolate rows for more precise rate results. Doubling or tripling the sample length improves accuracy.
Row Spacing Seeds per Population Kilograms per Hectare
Centimeters Row Meter Seeds/Hectare at 27560 s/kg at 33070 s/kg at 38580 s/kg
24.1cm Rows 149 6 177 500 224 187 160
134 5 559 750 202 168 144
119 4 942 000 179 149 128
104 4 324 250 157 131 112
89 3 706 500 135 112 96
75 3 088 750 112 93 80
60 2 471 000 90 75 64
45 1 853 250 67 56 48
25.4cm Rows 157 6 177 500 224 187 160
141 5 559 750 202 168 144
126 4 942 000 179 149 128
110 4 324 250 157 131 112
94 3 706 500 135 112 96
78 3 088 750 112 93 80
63 2 471 000 90 75 64
47 1 853 250 67 56 48
One Row of Twin Row 70cm 216 6 177 500 224 187 160
or 195 5 559 750 202 168 144
35cm Rows 173 4 942 000 179 149 128
151 4 324 250 157 131 112
130 3 706 500 135 112 96
108 3 088 750 112 93 80
86 2 471 000 90 75 64
65 1 853 250 67 56 48
One Row of Twin Row 76.2cm 235 6 177 500 224 187 160
or 212 5 559 750 202 168 144
38.1cm Rows 188 4 942 000 179 149 128
165 4 324 250 157 131 112
141 3 706 500 135 112 96
118 3 088 750 112 93 80
94 2 471 000 90 75 64
71 1 853 250 67 56 48
32325B