Main box seed rate, Setting drive type, Drive type relative speed – Great Plains 800 Material Rate User Manual
Page 4: Table of contents main box rates, 2800 table of contents main box rates, Figure 2 drive type 3, Great plains manufacturing, inc, 057b
175-057B
2011-10-25
2
800
Great Plains Manufacturing, Inc.
Main Box Seed Rate
Accurately obtaining the desired seed population
requires four steps:
1.
Setting Drive Type gearbox (from chart)
2.
Setting initial Seed Rate Handle (from chart)
3.
Positioning Seed Cup Door (by seed type)
4.
Calibration: checking predicted seeding rate
Seed rate charts begin on page 8. The charts list proper
Drive Type and seed rate handle settings for various
seeds and seeding rates.
The seed rate charts are based on cleaned, untreated
seed of average size and test weight. The charts are
based on 700-15 LT end wheel tires, inflated to factory
specification. Many factors affect seeding rates including
foreign material, seed treatment, seed size, seed weight,
field conditions, tire pressure and test weight.
Use the charts only as a starting point. Minor
adjustments are commonly required. Set and check the
seeding rate using the procedures following, then
readjust the rate as necessary.
Setting Drive Type
Refer to Figure 2
Drive Type is determined by the handle on the gearbox
cover at left front of the drill.
For correct Drive Type, refer to the charts in the Seed
Rate manual. The charts list Drive Types as 1, 2, 3 or 4.
Each Drive Type corresponds to a specific gear ratio.
8
800
Rate Charts, Main Seed Bo
x
Charts in U S customary uni s
Me r c charts beg n on page 37
Alfalfa (Medicago sativa)
Alfa fa 1 of 4, Drive Type: 1
Alfalfa 2 of 4, Drive T
ype: 2
Alfalfa 3 of 4, Drive T
ype: 3
Alfalfa 4 of 4, Drive T
ype: 4
Bahia Grass (Paspalum notatum)
Bahia 1 of 4, Drive T
ype: 1
Seed Rate Handle Setting
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Rows Drive Type: 1
Seed Rate in Pounds Per Acre
(based on 60 pounds/bushel)
6 in
0 5 8 8 4 11 15 18 22 26
31
35
40
45
49
54
59
63
67
72
76
79
83
7 5 in
0 4 6 6 7 9 1 12 15 18 21
25
28
32
36
39
43
47
50
54
57
61
64
66
32291E
Seed Rate Handle Setting
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Rows Drive Type: 2
Seed Rate in Pounds Per Acre
(based on 60 pounds/bushel)
6 in
0
12
17
23
30
38
46
54
63
73
82
92 101 111 120 130 139 147 156
163 171
7 5 n
0 9 5 14
19
24
30
37
44
51
58
66
73
81
89
96 104 111 118 125 131 136
32291E
Seed Rate Handle Setting
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Rows Drive Type: 3
Seed Rate in Pounds Per Acre
(based on 60 pounds/bushel)
6 in
0
19
27
36
46
57
69
81
94 108 121 135 149 163 176
189 202 214 225 236 246
7 5 in
0
15
22
29
37
46
55
65
75
86
97 108 119 130 141 151 162 171
180 189 196
32291E
Seed Rate Handle Setting
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Rows Drive Type: 4
Seed Rate n Pounds Per Acre
(based on 60 pounds/bushel)
6 in
0
31
44
59
75
93 112 133 154 175 198 220
243 265 287 309 329 349 368
385 400
7 5 in
0
25
35
47
60
75
90 106 123 140 158 176 194
212 230 247 264 279 294 308
320
32291E
Seed Rate Handle Setting
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Rows Drive Type: 1
Seed Rate in Pounds Per Acre
(based on 40 pounds/bushel)
6 in
0 2 7 3 9 5 6 7 9 11 14 17
21
25
29
33
38
42
46
50
54
57
60
63
65
7 5 n
0 2 2 3 1 4 5 6 3 8 5 11 14
17
20
23
27
30
33
37
40
43
46
48
50
52
322 2E
32631
Figure 2
Drive Type 3
28376
Drive Type
Relative Speed
1
Slowest
2
2.06 times faster than Type 1
3
3.08 times faster than Type 1
4
5.02 times faster than Type 1
32790