The Agriculture Phosphorus Initiative

February 28, 2019
Read the PMT-Update-02.28.2019.pdfPMT Implementation Update, as of Feb. 28, 2019

March 14, 2016
(Press Release) The Maryland Department of Agriculture today announced that based on statewide soil test information 82 percent of farm fields tested to date will not be impacted by new environmental regulations, which may limit phosphorus application or the use of animal manure as a fertilizer. Eighteen percent of farm fields will require use of the phosphorus management tools to evaluate risk. Only 1 percent of all farm fields are immediately banned from applying phosphorus crop fertilizer. The phosphorous in poultry and dairy manure will impact its use as a crop nutrient in these situations.

February 25, 2016 

February 22, 2016
Read the PMT Implementation Update​, as of February 2016   

May 29, 2015 and June 8, 2015

Maryland's Phosphorus Management Tool (PMT) regulations became effective June 8, 2015. They provide a multi-year process for farmers to transition from the Phosphorus Site Index to the PMT, an updated tool that uses the latest scientific findings to identify the potential risk of phosphorus loss from farm fields and will also prevent the additional buildup of phosphorus in soils that are already saturated. Effective immediately, fields with the greatest risk for phosphorus runoff into waterways as indicated by a FIV of 500 or greater are  banned from receiving additional phosphorus.​

April 3, 2015
Newly proposed PMT regulations were published in today’s Maryland R​egister​. MDA will offer a 30-day public comment period on the proposed regulations ending May 4. Read more.

March 19, 2015

The Hogan Administration and lawmakers, together with stakeholders from the agriculture and environment communities, reached consensus on the phosphorus management tool regulations on March 18. Read more.

Final revised PMT regulation​ submitted for publications to the Maryland Register for April 3.​

March 4, 2015
Hogan's phosphorus regulations reflect the nation's best science, a column written by Agriculture Secretary Bartenfelder that appeared in the Baltimore Sun.
February 24, 2015
MDA submitted proposed PMT Regulations to the Joint Committee on Administrative, Executive and Legislative Review (AELR) Feb. 24 for publication in the Maryland Register on April 3. 
February 23, 2015 

Governor Hogan Releases Enhanced Phosphorous Management Tool Regulations​, Feb. 23, 2015 (Press Release) -- Governor Larry Hogan unveiled enhanced Phosphorus Management Tool (PMT) regulations as part of a broader “Maryland Agriculture Phosphorus Initiative,” which will further Maryland’s efforts to improve water quality, strengthen the agricultural industry, and bolster rural economies.  
A History of the PMT 
December 2014
November 2014

October 2014 

June 2014 
  • Secretary's Column: PMT and Chesapeake Bay

November 2013
October 2013
September 2013
  • PMT AgBrief - The timeline and information in this AgBrief is no longer accurate. It is provided here for historical informational purposes only. 

August 2013
July 2013
January 2013

Related Links

For information about the department's Nutrient Managment Program​.

University of Maryland Phosphorus Management Tool: Technical Users Guide

Farming with Your Nutrient Management Plan: A Comprehensive Guide to Maryland's Nutrient Management Regulations

Department testimony on related bills can be found online.