The Kick-off meeting of the Agrocomposit project (Biochar-compost composites for supporting site-specific soil agro-ecosystem functions and climate change mitigation) was held on May 14-15 in Budapest. The main objective of the project, to be carried out within the EJP Soil Programme, is the development of site-specific soil improvement technologies applying composite soil amendments (co-composted biochar and organic wastes) produced from region-specific organic wastes and by-products. The venue for the second day meeting was provided by the Institute for Soil Sciences, HUN-REN CAR. Institutions involved in the project did also participate in the meeting: the Budapest University of Technology and Economics (consortium leader), the Norwegian Institute of Bioeconomy Research (NIBIO), the FHNW (University of Applied Sciences and Arts Northwestern Switzerland) and the swiss research institute Agroscope.