Can soybean population be too high?

Asked May 14, 2018, 1:22 PM EDT

Can soybean population be too high?

Muskingum County Ohio soybeans

1 Response

The answer to this question is probably an economic question because you can certainly plant more seeds than required and not impact yield to any great degree. In general, soybean seeding rates may be anywhere from 100,000 to 200,000. Double crop soybean or soybean planted late will be the scenarios that require higher seeding rates. One reason for this is the the ability of the field to close canopy to keep weed populations from developing.

For fields planted in May, 100,000 to 120,000 plants per acre is sufficient. As planting dates shift later seeding rates should be adjusted.

Consult the Ohio Agronomy guide for more specific information, https://stepupsoy.osu.edu/soybean-production/ohio-agronomy-guide-15th-edition

Also consider this resource:
https://stepupsoy.osu.edu/news/soybean-planting-date-seeding-rate-and-row-width