SEED SPACING TO ACHIEVE VARIOUS PLANT POPULATIONS

Inches between kernels Final*
Seeds/Acre 20" row 28" row 30" row 36" row 38" row 40" row Population
15,000 20.9 14.9 13.9 11.6 11.0 10.5 13,500
16,000 19.6 14.0 13.1 10.9 10.3 9.8 14,400
17,000 18.4 13.2 12.3 10.2 9.7 9.2 15,300
18,000 17.4 12.4 11.6 9.7 9.2 8.7 16,200
19,000 16.5 11.8 11.0 9.2 8.7 8.3 17,100
20,000 15.7 11.2 10.5 8.7 8.3 7.8 18,000
22,000 14.3 10.2 9.5 7.9 7.5 7.1 19,800
24,000 13.1 9.3 8.7 7.3 6.9 6.5 21,600
26,000 12.1 8.6 8.0 6.7 6.3 6.0 23,400
28,000 11.2 8.0 7.5 6.2 5.9 5.6 25,200
30,000 10.5 7.5 7.0 5.8 5.5 5.2 27,000
32,000 9.8 7.0 6.5 5.4 5.2 4.9 28,800
* Assuming 10% stand loss

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Corn, Soybean, Wheat, and Alfalfa Field GuideBulletin 827