The purpose of this poster is to provide empirical evidence on the role of grey literature in bioeconomy, as one of the emergent research fields at the crossroads of several disciplines and with high societal and industrial impact. Based on scientometric studies and on results from a survey in the field with research laboratories, corporate companies and other organizations, the poster will present some original empirical results on the role of grey literature for the production and usage of scientific and technical information about bioeconomy, together with some general conclusions and recommendations. This work is part of a larger, interdisciplinary research project funded by the French National Research Agency (RECABIO ANR-16-IDEX-0004 ULNE).