Best Brassicas varieties for Corn Belt Core 2026.
3 varieties with documented performance data for brassicas in Corn Belt Core. Rankings reflect independent university trial data and publicly-documented agronomic fit — not seed-company marketing claims.
The Corn Belt Core has the deepest variety trial coverage of any agricultural region in the country — Iowa State, Illinois, Purdue, and Ohio State publish hundreds of variety entries every year. Variety choice here is well-supported by independent trial data; the challenge is interpretation, not access.
Daikon Radish (Tillage Radish)
ExcellentDaikon (tillage) radish is the gold standard cover crop tap-root species for Corn Belt no-till operations. Penetrating taproots reach 24–36 inches into compacted subsoil layers; winter-killed tops decompose rapidly and release N for the following corn crop. Iowa State, Penn State, and several other land-grants have published trial data on daikon as a cover.
Editorial top pick is selected based on overall performance rating and regional fit — not on seed-company sponsorship or affiliate relationships. Bield: Farm has neither.
Top varieties side-by-side
Comparison — Brassicas in Corn Belt Core
3 varieties| Metric | Daikon Radish (Tillage Radish)55–70 days; killed by hard freeze | Purple Top Turnip60–80 days to bulb maturity | Trophy Radish60–80 days to root maturity |
|---|---|---|---|
| Overall rating | Excellent | Good | Good |
| Data quality | University Trial Data | Community Reports | Community Reports |
| GMO | Non-GMO | Non-GMO | Non-GMO |
| Drought tolerance | Fair | Fair | Fair |
| Standability | Good | Good | Good |
| Seeding rate | 8–10 lb/acre drilled; 10–15 lb/acre broadcast | 3–5 lb/acre broadcast; 2–3 lb/acre in a blend | 5–8 lb/acre pure stand; 3–5 lb/acre in a blend |
Cell tinting reflects best (green) / worst (amber) within this comparison only. Always verify against the latest extension trial report for Corn Belt Core before purchase decisions.
Where this data comes from
Brassicas variety trials in Corn Belt Core
Independent · Public UniversityThese results come from independent university variety trials — not seed company marketing materials. Variety entries, planting dates, and harvest measurements are controlled by the trial program. Land-grant universities publish full results annually.
- Iowa State Variety Trialscrops.extension.iastate.edu/varietytrials ↗
- Illinois Corn Hybrid Performance Trialsvt.cropsci.illinois.edu ↗
- Purdue Variety Performance Trialsextension.purdue.edu ↗
- Ohio Corn Performance Testcorn.osu.edu ↗
Trial reports are typically released in January–March of the year following harvest. For Brassicasvariety selection, the most recent year’s report is the most relevant data source.
All reviewed varieties — Corn Belt Core
- Daikon Radish (Tillage Radish)Excellent55–70 days; killed by hard freeze·Non-GMO·University Trial Data
Daikon (tillage) radish is the gold standard cover crop tap-root species for Corn Belt no-till operations. Penetrating taproots reach 24–36 inches into compacted subsoil layers; winter-killed tops decompose rapidly and release N for the following corn crop. Iowa State, Penn State, and several other land-grants have published trial data on daikon as a cover.
Full review → - 60–80 days to bulb maturity·Non-GMO·Community Reports
Purple top turnip is the easy-button brassica for Corn Belt food plots — broadcast in late summer (early August in MW-2), establishes fast, and frost-triggered sugar conversion in November consistently turns whitetails onto the plot just as bow season transitions to gun season. Cheap seed cost per acre is a major reason it remains a food plot staple.
Full review → - Trophy RadishGood60–80 days to root maturity·Non-GMO·Community Reports
Trophy radish is the most widely-deployed forage radish in Corn Belt food plots — fast establishment, heavy summer foliage that deer browse aggressively, and tap roots that improve soil structure as they decompose after winter kill. Strong dual-purpose (food plot + cover crop) value.
Full review →