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Michigan State University Turfgrass Scienceturf.msu.edu

Phosphorus Restrictions Resources

Legislation restricting phosphorus use on turfgrass in Michigan became effective Jan. 1, 2012.

MSU Soil Testing Lab Recommendations for Phosphorus Applications to Turfgrass (PDF)

Natural Resources and Environmental Protection Act (Excerpt), Act 451 of 1994, Part 85 Fertilizers: Sections pertaining to phosphorus restrictions highlighted. (PDF)

New Legislation Restricts Phosphorus Fertilizer Application on Turf, article by April Hunt, MDARD (PDF)

Phosphorus Restrictions FAQ's (PDF)

Use Phosphorus Free Fertilizer (PDF)