It can take more than 1000 years to form a centimeter of topsoil.

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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.

Last IUSS Alert

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IUSS Bulletins

IUSS Bulletin 134IUSS Bulletin 134 (June 2019)

Click here for archived bulletins!

Internat. Decade of Soils

As one of the outreach activities during the International Decade of Soils (2015-2024) the IUSS has launched a book series.
These books are not only addressed to soil scientists, but also to academic students of other sciences. These books shall shed light on important soil issues related to other disciplines and global challenges.
The newest book is titled Soil and Sustainable Development Goals
Read more


Let’s celebrate World Soil Day together on December 5

The International Union of Soil Science invites all members of the Soil Science Societies belonging to the IUSS to celebrate World Soil Day on December 5 labeling their events on the global map of FAO

to strengthen the global presence of our Scientific Societies working with FAO as our partner.

For more details, please see here:

Recommended Publication

New book of IUSS published

The most recent book in the IUSS book series of the International Decade of Soils (2015-2024) Global Soil Proverbs. Cultural Language of the Soil was published in the CATENA series GeoEcology Essays.
The book features an impressive number of proverbs compiled in 32 chapters from 29 different countries in Africa, Asia, Europe, North America, and Oceania, sharing insights about philosophy, culture, and life in each country.

>>Read more


AACS won King Bhumibol World Soil Day Award 2019

We are proud to inform you that the winner of the King Bhumibol World Soil Day Award 2019 is a member of the IUSS, the Costa Rican Soil Science Society (AACS,
For more information about their activities please see: >>Read more

Upcoming Meetings

Early Career Soil Modeling Workshop - Joint Early Career Researchers – Soil Science Networking Event
Sunday, 8. December 2019 to Sunday, 8. December 2019
4th Thünen Symposium on Soil Metagenomics - Understanding and Managing Soil Microbiomes
Wednesday, 11. December 2019 to Friday, 13. December 2019