There are over 100,000 different types of soil in the world.

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The International Union of Soil Sciences (IUSS) is the global union of soil scientists. The objectives of the IUSS are to promote all branches of soil science, and to support all soil scientists across the world in the pursuit of their activities. This website provides information for IUSS members and those interested in soil science.

IUSS Alert 5 (September 2005)

Information for and from the global soil science community

New deadline for submission of abstracts 18th WCSS

The deadline for submission of abstracts has been extended from September 15 to December 1, 2005.  The Organizing Committee for the 18th WCSS met in August and discussed final details for the Congress and decided this change would enable as broad participation as possible.  The symposia will be finalized by January 15, 2006 and the final program will be shared with authors on February 1, 2006. These dates are shown on the WCSS web site and they are published in the 3rd and Final Announcement from September 2005 - see here.

New website on long-term soil experiments

There is a new website on long-term soil experiment: With long-term soil experiments it can be observed how soils change over years and decades to centuries, and how soils interact with global changes over these time scales: chemically, biologically, and physically. Currently, there are more than 125 experiments in the inventory - more are wanted.

Soil maps of Africa - online!

Soil maps of Africa have been scanned and are now available here as part of the European Digital Archive of soil maps (EuDASM). The maps (1920s - 1990s) can be searched by country, year, scale, or keyword. Maps can be viewed and downloaded as JPG.

Main messages identified for Smithsonian Soils Exhibit

Smithsonian's National Museum of Natural History Core Design Team, with the collaboration of the SSSA Design Committee, has developed the following five key 'take-home' messages for the 6,000 square foot soils exhibit being designed for a 2008 opening. Then include the information here PDF  More information on this project can be found at

IUSS Bulletin 107 - Deadline

Deadline for contributions for IUSS Bulletin 107 is 20th September. Please send any information (meetings, reports, articles, announcements, good ideas, new books, etc.) for the Bulletin to and

If you have information to share please send it to and it will be include it in the next IUSS Alert. Please forward the IUSS Alerts to your friends and colleagues.