The goal of this use case is to illustrate the benefit of using AgroPortal ontologies to describe, annotate and structure phenomics data within the PHIS platform, an open source information system for Plant Phenomics. We like: (i) to ease the reuse of semantic artefact objects (classes, concepts, properties, etc.) within PHIS to describe data and (ii) enable the push back of knowledge objects created by domain scientists within PHIS to application or domain ontologies hosted in AgroPortal.