The 26th International CIEC symposium is the last one under the presidency of Prof. mult. Dr. mult. Ewald Schnug and is thematically dedicated to issues of plant nutrition and soil science & fertilizers and fertilization with special regard to research conducted at the Federal Research Centre. The Symposium will be the last one organized by its President, Prof. mult. Dr. mult. Ewald Schnug before he hands over the Presidency to the now President-Elect, Prof. Dr. Lanzhu Ji (IAE/CAS). The spectrum of topics is diversified and after more than 25 years of research still “fresh”. Participants are invited to exchange views with your fellows in different thematic groups of the World Café!