The 21st Meeting of the International Humic Substances Society

“Natural organic matter and humic substances for sustainable development”

Francisco Rozende Auditorium, Pontificia Universidad Católica de Chile, Santiago City, Chile

August 6-11, 2023

Web page:

Contact person: Prof. Dr. Monica Antilen; e-mail:

Deadline for abstract submission (for oral and poster presentations): June 30th. For more information, visit

To download the welcome announcement, click here.