Data & Trials
Maturity-group zones, relative-yield trends and trait mix — presented consistently and always with the source.
What maturity group fits your farm?
Click a state (or pick one from the list) to see its typical adapted MG range. Soybeans flower in response to day length, so the right MG shifts with latitude.
Earlier (lower) maturity groups are adapted to northern latitudes; later groups to the South.
Ranges are a general guide. Planting date, local trials and field history should drive final choices — many growers successfully plant slightly outside these ranges.
Performance at a glance
Relative yield by maturity group
Each dot is a variety's 3-year average; 100% = trial average.
Year-over-year consistency — top 6
Stable lines = consistent performance across seasons.
Trait platform mix
SCN resistance source
Most commercial varieties rely on PI 88788; Peking adds diversity where SCN has adapted.
Trial summary by MG zone
Open full databaseHow to read these numbers
- Relative yield compares a variety to the average of all entries in the same trial, so different locations and years can be compared fairly.
- Multi-year, multi-location results beat a single plot. Favor varieties that stay above 100% across years.
- Ratings (1–9, 9 = best) are normalized from company and university scales, which vary — always check the original scale.
- Small yield differences are often within experimental error; check the trial's LSD (least significant difference) before treating 1–2% as real.
Sources we use
State university official variety trials (OVT) — for example Iowa Crop Performance Tests, Illinois Variety Testing, Purdue, Ohio State, Minnesota, NDSU, Kansas State, Nebraska, Arkansas and Mississippi State programs — plus seed-company tech sheets for trait and rating details.
Disease and SCN background: Crop Protection Network and The SCN Coalition. Acreage and production: USDA NASS.