This document discusses efforts to make agricultural data more interoperable using standards like AgriSchemas. It provides examples of existing agricultural data sources like experimental data from EBI GXA, molecular biology data from Knetminer, and host-pathogen interaction data from PHI-Base. It describes work to model Knetminer and GXA data according to AgriSchemas and provide public SPARQL access. The hackathon goals are to further review and develop AgriSchemas, consider additional use cases and data sources, start defining the AgriSchemas schema/ontology, and work on converting real datasets and applications.