For this study, we considered the 150,000 planting population as our check and compared that population to the lower populations. Yields from the 5 different populations varied from 87.8 to 93.6 bpa, this 5.8 bpa difference is a wider gap than the 2.2 bpa range that was observed in 2021. In Figure 9, we have harvest data and net revenue for each different planting population. We utilized a seed cost of $43.17 per unit of seed and a soybean price of $14.48 per bushel to calculate net revenue for this trial. Net revenue ranged from $1,236.62 to $1,317.71 per acre a total difference of $81.09 per acre. The data from 2022 indicates that the planting population of 120,000 seeds per acre was the most profitable and the best balance of seed cost and yield. This data is similar to 2021 data where 120,000 was the highest yielding and the second highest in net revenue. We feel that we need one more year of testing to validate this trial but we are comfortable with our results despite the challenges presented in 2022.
16 rows 150K 16 Rows 120K 16 Rows 100K 16 Rows 80K 16 Rows 60K
Yield 13.0
92.1
93.6
88.4 -3.7
87.8 -4.3
86.7 -5.5
Difference from check
1.4
Seed Cost $/Ac
$46.25 $14.48
$37.00 $14.48 $20.52
$30.84 $14.48 -$54.02
$24.67 $14.48 -$62.54
$18.50 $14.48 -$79.36
Grain Price
Revenue Change
NET Revenue $/ac
$1,287.94
$1,317.71
$1,249.33
$1,246.98
$1,236.32
Difference from check $/ac
$29.78
-$38.61
-$40.95
-$51.61
Figure 9. Yield data for the soybean planting population trial.
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