Turfgrass Seed Variety Evaluation Process

Summary:

Our project addresses two critical needs: to update existing MnDOT turfgrass recommendation lists and to develop a new process to keep lists continually updated in a fair manner with data-driven recommendations. We evaluated the current list of MnDOT-approved turfgrass varieties and found underperforming varieties that should be removed. We then found new, improved varieties that should be considered for inclusion on the MnDOT lists. To facilitate a process to keep lists updated for the future, we first conducted a survey of seed distributors. Using their input, we developed a new process that MnDOT can use to approve turfgrass varieties for inclusion for official seed mixtures. Ultimately, this will lead to a more nimble, consistent, and clear process so that existing and new seed vendors can have complete confidence in data-driven decision making by MnDOT.

Final Deliverables:

• Report #2023-20
• Research Summary

Related Materials:

• Evaluating MnDOT’s Turfgrass Seed Variety List and Approval Process  - (Blog Post)

Related Research:

• Regional Optimization of Roadside Turfgrass Seed Mixtures Phase 2: Regional Field Trials and Economic Analysis
• Performance Testing of Regional Roadside Turfgrass
• Regional Optimization of Roadside Turfgrass Seed Mixtures Phase 1
• Regional Optimization of Roadside Turfgrass Seed Mixtures Phase 3