Table 1a.  Population per acre for 1 to 10 units per 10-feet-of-row and a row space of 15 to 38 inches.
Row	Units per 10-feet-of-row                                                   *↓
Space	1	2	3	4	5	6	7	8	9	10
inch	Population per acre
15	3,485	6,970	10,454	13,939	17,424	20,909	24,394	27,878	31,363	34,848
16	3,267	6,534	9,801	13,068	16,335	19,602	22,869	26,136	29,403	32,670
18	2,904	5,808	8,712	11,616	14,520	17,424	20,328	23,232	26,136	29,040
20	2,614	5,227	7,841	10,454	13,068	15,682	18,295	20,909	23,522	26,136
22	2,376	4,752	7,128	9,504	11,880	14,256	16,632	19,008	21,384	23,760
24	2,178	4,356	6,534	8,712	10,890	13,068	15,246	17,424	19,602	21,780
26	2,010	4,021	6,031	8,042	10,052	12,063	14,073	16,084	18,094	20,105
28	1,867	3,734	5,601	7,467	9,334	11,201	13,068	14,935	16,802	18,669
30	1,742	3,485	5,227	6,970	8,712	10,454	12,197	13,939	15,682	17,424
32	1,634	3,267	4,901	6,534	8,168	9,801	11,435	13,068	14,702	16,335
34	1,537	3,075	4,612	6,150	7,687	9,224	10,762	12,299	13,837	15,374
36	1,452	2,904	4,356	5,808	7,260	8,712	10,164	11,616	13,068	14,520
38	1,376	2,751	4,127	5,502	6,878	8,253	9,629	11,005	12,380	13,756
*Populations in this column also equal the number of linear feet of row per acre for a given row space.
Table 1b.  Population per acre for 11 to 20 units per 10-feet-of-row and a row space of 15 to 38 inches.
Row	Units per 10-feet-of-row
Space	11	12	13	14	15	16	17	18	19	20
inch	Population per acre
15	38,333	41,818	45,302	48,787	52,272	55,757	59,242	62,726	66,211	69,696
16	35,937	39,204	42,471	45,738	49,005	52,272	55,539	58,806	62,073	65,340
18	31,944	34,848	37,752	40,656	43,560	46,464	49,368	52,272	55,176	58,080
20	28,750	31,363	33,977	36,590	39,204	41,818	44,431	47,045	49,658	52,272
22	26,136	28,512	30,888	33,264	35,640	38,016	40,392	42,768	45,144	47,520
24	23,958	26,136	28,314	30,492	32,670	34,848	37,026	39,204	41,382	43,560
26	22,115	24,126	26,136	28,146	30,157	32,167	34,178	36,188	38,199	40,209
28	20,535	22,402	24,269	26,136	28,003	29,870	31,737	33,603	35,470	37,337
30	19,166	20,909	22,651	24,394	26,136	27,878	29,621	31,363	33,106	34,848
32	17,969	19,602	21,236	22,869	24,503	26,136	27,770	29,403	31,037	32,670
34	16,912	18,449	19,986	21,524	23,061	24,599	26,136	27,673	29,211	30,748
36	15,972	17,424	18,876	20,328	21,780	23,232	24,684	26,136	27,588	29,040
38	15,131	16,507	17,883	19,258	20,634	22,009	23,385	24,760	26,136	27,512
SOUTH DAKOTA STATE UNIVERSITY - Plant Science, Brookings, SD
Robert G. Hall, Extension Agronomist-Crops, Tel: 1-605-688-4600
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