Wheat yellow rust is currently considered the most damaging disease of wheat globally. Understanding the rapidly shifting nature of responsible pathogen populations and dispersal in near real-time is critical if effective early warning and control is to be obtained. This requires new, innovative, data-driven, diagnostic tools. The project aims to develop and pilot an affordable, mobile in-field pathogenomics platform to revolutionize crop pathogen surveillance and diagnostics in real time. The project will use for the first time the MinION mobile genome sequencer platform for crop pathogen diagnostics using wheat yellow rust as a test case, and will assess its deployment in situ in Ethiopia.