Michigan Law restricts Phosphorus Fertilizers Applications on Lawns

Begining January 1, 2012, the way we can fertilize our lawns in MIchigan has changed. In 2007, the Michigan Department of Environmental Quality, released a report from a Statewide Advisory Committee to control phosphorus loading into surface waters. These findings and the general rule in Public Act 299 of 2010 (Act 299) states no phosphorus fertilizer may be applied on residential or commercial lawns, unless it meets an exemption. The sale of phosphorus fertilizers in the marketplace is NOT impacted. Phosphorus applications for agriculture, gardens, trees and shrubs are exempted.
Act 299 Highlights:

• Starting January 1, 2012, a person shall not apply any fertilizer with available phosphate ( P2O5) to turf. Available phosphate (P2O5) may be applied at specified rates* under the following instances:

1. When a soil test or plant tissue test indicates phosphorus is needed;
2. For new turf establishment using seed or sod;
3. A finished sewage sludge (biosolid), organic manure or a manipulated manure (like compost).
4. On golf courses whose manager(s) have completed a Michigan Department of Agriculture and Rural Development (MDARD) approved training program.

* These application rates are available at www.BePhosphorusSmart.msu.edu

• Local phosphorus fertilizer ordinances in existence before December 16, 2010 are grandfathered.
• Fertilizer cannot be applied to frozen soil or soil saturated with water.
• Any fertilizer released onto a hard surface, such as a sidewalk or driveway must be cleaned up promptly.
• The other provisions in Act 299 include new definitions, setbacks from surface water, $50 civil fines and outreach information.
• For more information, please visit www.michigan.gov/mda-fertilizer or www.BePhosphorusSmart.msu.edu.

PHOSPHORUS IN MICHIGAN'S WATERS
Phosphorus is a naturally occuring, essential plant, algal and animal nutrient. Although phosphorus concentrations in healthy plants are relatively low, it is essential because it is a structural component of nucleic acids, several essential coenzymes, phospholipids and the phosphate-rich molecules that help store energy in living organisms.

Phosphorus is an essential nutrient for plant growth and was routinely used as part of fertilization programs on home lawns. As a result of over use of the nutrient, aquatic plants can grow to excessive levels. This potentially severe increase in plant growth, (algae and rooted plants) is usually associated with a condition known as cultural eutrophication, which leads to declining water quality. Soil testing is encourage, for not only the growth of your lawn but your flower beds. Correct application of either Nitrogen (N) or Phosphorus (P) fertilizers are an important part of sustainable landscaping.The month of April is prime time for soil testing, Join Lillian Dean and SOCWA for an informational program on soil testing and fertilizing options .
Learn more from SOCWA'S Soil Testing Flyer.