Soybeans plant population
- Typical range: 100,000 to 140,000 plants per acre (final stand)
- Example spacing: 15-inch rows with 3 plants per foot
- Reference weight of 1,000 seeds: 160 g
In 15-inch rows with 3 plants per foot you get about 104,500 plants per acre. With 85 % emergence and seed weighing 160 g per 1,000 (about 2,800 seeds per pound), that is roughly 123,000 seeds or 43 pounds of seed per acre.
Soybeans compensate well for gaps by branching more, so a slightly low stand does not always cut yield.
These are reference values and change with variety, management and region. For your field, check the seed company recommendation or your local extension service.
Frequently asked questions
How many soybean seeds per acre?
Typically 120,000 to 160,000 seeds per acre. Many university trials show yields level off once the final stand passes about 100,000 plants per acre.