The Mid-Atlantic Association of Professional Soil Scientists (MAPSS) is a non- profit organization dedicated to the advancement of the profession of soil science and the protection of the public interest in matters related to soil science. The Association was organized in 1987 and serves professionals primarily in the Maryland, Delaware and District of Columbia area. The membership consists of private consultants, federal government employees, university faculty, state and county employees and other individuals interested in the goals and objectives of the Association in the Mid-Atlantic region.


Triumph for UMD Soil Judging!

SPRING 2019 UMD Soil Judging Team in San Luis Obispo, Ca.

The UMD Soil Judging team does it again…winning the National Soils Competition in California this spring. This is the 5th win for the team over the 58-year history of the competition and third team win in the last six years!

Read More in the Pedologue>


Our Newsletter

Days gone by: Jim brewer Hard at work.

Read about recent MAPSS events, the triumphs of the UMD Soil Judging Team, and current research at UMD uncovering the secrets of cover crops when if it comes to nitrogen leaching.

Summer: Vol 30_Issue 1>


Thanks to all who helped and all who participated in the 8th international conference to address the issue of acid sulfate soils, found in coastal regions throughout the world. Oxidation of the metal sulfides in these soils, upon exposure to air,  produces sulfuric acid. The subsequent acidification of soil and drainage waters often leads to detrimental ecological consequences.