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.

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IUSS Bulletins

IUSS Bulletin 137  IUSS Bulletin 137 (December 2020)

  Click here for archived bulletins!

Internat. Decade of Soils

IUSS – FAO – GSP children’s book contest on Soil Biodiversity

In the framework of World Soil Day (WSD) 2020, FAO, IUSS and GSP launched a scientific children’s book contest on Soil Biodiversity with the motto “Keep soil alive, protect soil biodiversity”. FAO, IUSS and GSP invite all those interested >>Read more


IUSS Bulletin 138 – Request for contributions

All IUSS members are kindly invited to submit their contributions for our next IUSS Bulletin 138 at their earliest convenience, but no later than 17 May 2021, to We are looking forward to receiving your conference/meeting reports and reports on activities dedicated to the International Decade of Soils (2015-2024) as well as any other information you would like to share with the international soil science community. Please make sure to send high-resolution photos only together with the copyright information.

Recommended Publication

IUSS and FAO Children’s book “The magical world of soil biodiversity”

In the framework of World Soil Day 2020, the Food and Agriculture Organization of the United Nations (FAO), the International Union of Soil Sciences (IUSS), the educative project “THE IUSS GOES TO THE SCHOOL”, and the Global Soil Partnership (GSP) launched a children's book contest on Soil Biodiversity with the motto "Keep soil alive, protect soil biodiversity". The book contest on soil biodiversity has given visibility to the importance of soil organisms and raised awareness on the urgency of protecting soil biodiversity. This collection of 10 stories in particular for children aged 6-11 years includes the best entries received from a total of 97 books spanning over 75 countries.

Discover and download the book:


BSSS and IUSS share a virtual exhibitor portal at the vEGU21

The British Society of Soil Science and the International Union of Soil Sciences share a virtual exhibitor portal at the vEGU21. About 16,000 attendees are registered for the General Assembly of the European Geoscience Union in 2021. This gives us the opportunity to promote the >>Read more

Upcoming Meetings

The outbreak of the Corona virus is clearly a rapidly evolving situation. The organisers of the meetings listed below will be constantly reviewing the situation in the light of global and country-specific advice to inform decisions to minimise the additional risks to attendees, their communities and those living in the meeting’s host country.

The IUSS will also continue to monitor the situation, and advise that prior to attending meetings our members review up to date information from their country’s government, the WHO and from the host country to ensure that everyone’s health and wellbeing remains a priority.

Intersol 2021: Soils: Opportunities for the Transition of Territories
Tuesday, 18. May 2021 to Thursday, 20. May 2021
3rd ISMC Conference – Advances in Soil Systems Modeling
Tuesday, 18. May 2021 to Saturday, 22. May 2021
9th National Symposium on Control of Soil Degradation and Recovery
Monday, 24. May 2021 to Wednesday, 26. May 2021
100 years of agricultural experimentation at the Faculty of Agriculture and Biology at the Warsaw University of Life Sciences in Warsaw
Thursday, 27. May 2021 to Friday, 28. May 2021
ISCRAES 2022 – The 2nd International Symposium on Climate-Resilient Agri-Environmental Systems
Monday, 7. June 2021 to Thursday, 10. June 2021
Ibero-American Workshop on Paleopedology and Geoarchaeology (PaleoIber 2021)
Monday, 7. June 2021 to Wednesday, 9. June 2021
5th International Conference on Contaminated Land, Ecological Assessment and Remediation CLEAR2020
Wednesday, 9. June 2021 to Friday, 11. June 2021
International Paleopedology meeting - Paleosols and ancient societies: from early humans to the industrial revolution
Thursday, 10. June 2021 to Saturday, 12. June 2021
AquaConSoil 2021
Monday, 14. June 2021 to Friday, 18. June 2021
Iberian Congress on Soils and Sustainable Development
Thursday, 17. June 2021 to Friday, 18. June 2021
WRB Workshop Summer 2021
Sunday, 20. June 2021 to Friday, 25. June 2021
8th World Congress on Conservation Agriculture
Monday, 21. June 2021 to Thursday, 24. June 2021
Soils Conference 2021 – Soils, investing in our future
Sunday, 27. June 2021 to Friday, 2. July 2021
17th International Clay Conference 2021 (17th-ICC) - New interfaces: bridging continents and cultures with clays
Monday, 12. July 2021 to Friday, 16. July 2021
First IUSS Conference on Sodic Soil Reclamation
Friday, 30. July 2021 to Sunday, 1. August 2021
XIVth International symposium and field workshop on paleopedology (ISFWP-XIV) - Paleosols, pedosediments and landscape morphology as archives of environmental changes
Sunday, 8. August 2021 to Wednesday, 18. August 2021