Table 1a.
Population per acre for 1 to 8 units per foot-of-row and a row space of 6 to 12 inches.
Row
Unit number per foot-of-row
Space
1
2
3
4
5
6
7
8
inch
Population per acre
6
87,120
174,240
261,360
348,480
435,600
522,720
609,840
696,960
7
74,674
149,349
224,023
298,697
373,371
448,046
522,720
597,394
8
65,340
130,680
196,020
261,360
326,700
392,040
457,380
522,720
10
52,272
104,544
156,816
209,088
261,360
313,632
365,904
418,176
12
43,560
87,120
130,680
174,240
217,800
261,360
304,920
348,480
Table
1b. Population per acre for 9 to 16 units per foot-of-row and a
row space of 6 to 12 inches.
Row
Unit number per foot-of-row
Space
9
10
11
12
13
14
15
16
inch
Population per acre
6
784,080
871,200
958,320
1,045,440
1,132,560
1,219,680
1,306,800
1,393,920
7
672,069
746,743
821,417
896,091
970,766
1,045,440
1,120,114
1,194,789
8
588,060
653,400
718,740
784,080
849,420
914,760
980,100
1,045,440
10
470,448
522,720
574,992
627,264
679,536
731,808
784,080
836,352
12
392,040
435,600
479,160
522,720
566,280
609,840
653,400
696,960
Table
1c. Population per acre for 17 to 24 units per foot-of-row and a
row space of 6 to 12 inches.
Row
Unit number per foot-of-row
Space
17
18
19
20
21
22
23
24
inch
Population per acre
6
1,481,040
1,568,160
1,655,280
1,742,400
1,829,520
1,916,640
2,003,760
2,090,880
7
1,269,463
1,344,137
1,418,811
1,493,486
1,568,160
1,642,834
1,717,509
1,792,183
8
1,110,780
1,176,120
1,241,460
1,306,800
1,372,140
1,437,480
1,502,820
1,568,160
10
888,624
940,896
993,168
1,045,440
1,097,712
1,149,984
1,202,256
1,254,528
12
740,520
784,080
827,640
871,200
914,760
958,320
1,001,880
1,045,440
Table
1d. Population per acre for 26 to 40 units per foot-of-row and a
row space of 6 to 12 inches.
Row
Unit number per foot-of-row
Space
26
28
30
32
34
36
38
40
inch
Population per acre
6
2,265,120
2,439,360
2,613,600
2,787,840
2,962,080
3,136,320
3,310,560
3,484,800
7
1,941,531
2,090,880
2,240,229
2,389,577
2,538,926
2,688,274
2,837,623
2,986,971
8
1,698,840
1,829,520
1,960,200
2,090,880
2,221,560
2,352,240
2,482,920
2,613,600
10
1,359,072
1,463,616
1,568,160
1,672,704
1,777,248
1,881,792
1,986,336
2,090,880
12
1,132,560
1,219,680
1,306,800
1,393,920
1,481,040
1,568,160
1,655,280
1,742,400
If number
per
acre (FPA) for the given row space. For example, if row space = 6, then FPA =
87,120 feet
and
if row space = 12, the FPA = 43,560 feet.
Robert
G. Hall, Extension Agronomist-Crops
SOUTH
DAKOTA STATE UNIVERSITY - Plant Science Department,
Brookings, SD