40in twin rows, 12 finger meter, Twin row 40, 12 finger meter – Great Plains 2525P Material Rate User Manual
Page 59: 2025-p, 2525-p
Great Plains Mfg., Inc.
57
03/23/2010
118-231B
2025-P
TWIN ROW 40"
2525-P
ATTENTION ! ! !
(For all seed corn types)
12 Finger Meter
Great Plains always recommends test stand calibration of the finger meter to the population and ground speed desired .
For Round Corn optimum meter speed is 45 to 75 RPM
( Shaded & Non shaded areas )
Range Sprockets:
Driver =
30
For Flat Corn optimum meter speed is 60 to 75 RPM
Driven =
15
(Shaded area)
Ground Speed
Transmission
7 mph
6.5 mph
6 mph
5.5 mph
5 mph
4.5 mph
4 mph
3.5 mph
Combinations
Seed
Seed
Population
Spacing
Meter
Meter
Meter
Meter
Meter
Meter
Meter
Meter
Driver
Driven
(seeds/acre)
(inches)
(rpm)
(rpm)
(rpm)
(rpm)
(rpm)
(rpm)
(rpm)
(rpm)
17
28
17,587
17.8
17
27
18,239
17.2
17
26
18,940
16.6
19
28
19,656
16.0
17
25
19,698
15.9
19
27
20,384
15.4
17
24
20,518
15.3
19
26
21,168
14.8
17
23
21,410
14.6
19
25
22,015
14.2
19
24
22,932
13.7
45
23
28
23,794
13.2
47
19
23
23,929
13.1
47
23
27
24,676
12.7
48
45
24
28
24,829
12.6
49
45
23
26
25,625
12.2
50
47
24
27
25,749
12.2
51
47
25
28
25,863
12.1
51
47
17
19
25,918
12.1
51
47
23
25
26,650
11.8
52
49
45
24
26
26,739
11.7
53
49
45
25
27
26,821
11.7
53
49
45
26
28
26,898
11.7
53
49
45
23
24
27,760
11.3
55
51
47
24
25
27,808
11.3
55
51
47
25
26
27,853
11.3
55
51
47
26
27
27,894
11.2
55
51
47
Not Recommended
27
28
27,933
11.2
55
51
47
23
23
28,967
10.8
57
53
49
45
28
27
30,040
10.4
59
55
51
46
27
26
30,081
10.4
59
55
51
46
26
25
30,126
10.4
59
55
51
46
25
24
30,174
10.4
59
55
51
47
24
23
30,227
10.4
59
55
51
47
28
26
31,195
10.1
61
57
53
48
27
25
31,284
10.0
61
57
53
48
26
24
31,381
10.0
62
57
53
48
25
23
31,486
10.0
62
57
53
49
19
17
32,375
9.7
64
59
55
50
45
28
25
32,443
9.7
64
59
55
50
46
27
24
32,588
9.6
64
59
55
50
46
26
23
32,745
9.6
64
60
55
51
46
28
24
33,795
9.3
66
62
57
52
47
27
23
34,005
9.2
67
62
57
52
48
23
19
35,065
8.9
69
64
59
54
49
28
23
35,264
8.9
69
64
59
54
49
45
24
19
36,590
8.6
72
67
62
56
51
46
25
19
38,115
8.2
75
70
64
59
53
48
23
17
39,191
8.0
71
66
60
55
49
26
19
39,639
7.9
72
67
61
56
50
24
17
40,895
7.7
75
69
63
57
52
46
27
19
41,164
7.6
75
69
64
58
52
46
25
17
42,599
7.4
72
66
60
54
48
28
19
42,688
7.3
72
66
60
54
48
26
17
44,303
7.1
75
68
62
56
50
27
17
46,007
6.8
71
65
58
52
45
28
17
47,710
6.6
Not Recommended
74
67
60
54
47