Furrow checking rate – Great Plains YP2425A Material Rate User Manual
Page 33
Great Plains Manufacturing, Inc.
Table of Contents Metric Charts
Volumetric Seeding
31
2012-02-29
Table of Contents Metric Charts
401-626B
Furrow Checking Rate
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 foot.
Count the seeds.
i.
Find the nearest “Seeds per Row Foot” in the table for
your row spacing.
j.
Look up the Population, or “Pounds per acre”.
a. You can interpolate rows for more precise rate results. Doubling or tripling the sample length improves accuracy.
Row Spacing
Seeds per
Population
Pounds per acre
Inches
Row Foot
Seeds/Acre
at 12500 s/lb
at 15000 s/lb
at 17500 s/lb
9.5in Rows
45
2 500 000
200
167
143
41
2 250 000
180
150
129
36
2 000 000
160
133
114
32
1 750 000
140
117
100
27
1 500 000
120
100
86
23
1 250 000
100
83
71
18
1 000 000
80
67
57
14
750 000
60
50
43
10in Rows
48
2 500 000
200
167
143
43
2 250 000
180
150
129
38
2 000 000
160
133
114
33
1 750 000
140
117
100
29
1 500 000
120
100
86
24
1 250 000
100
83
71
19
1 000 000
80
67
57
14
750 000
60
50
43
One Row of Twin Row 30in
72
2 500 000
200
167
143
or
65
2 250 000
180
150
129
15in Rows
57
2 000 000
160
133
114
50
1 750 000
140
117
100
43
1 500 000
120
100
86
36
1 250 000
100
83
71
29
1 000 000
80
67
57
22
750 000
60
50
43
32325A