Grain sorghum plant population
- Typical range: 40,000 to 100,000 plants per acre, depending on rainfall
- Example spacing: 30-inch rows with 3 plants per foot
- Reference weight of 1,000 seeds: 28 g
In 30-inch rows with 3 plants per foot you get about 52,300 plants per acre. With 80 % emergence and seed weighing 28 g per 1,000, you need about 4 pounds of seed per acre.
Forage sorghum and sorghum-sudangrass are planted much thicker, often drilled at 15 to 30 pounds per acre.
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 pounds of grain sorghum seed per acre?
Usually 3 to 8 pounds per acre for grain sorghum, depending on seed size and the population you want.