The disease is caused by strains of a soil fungus called Fusarium oxysporum f. sp.cubense (Foc). (scientificamerican.com)
By 1890, the same disease appeared in Gros Michel crops in Costa Rica and Panama, and 20 years later, it was finally attributed to the fungus Fusarium oxysporum f.sp. (businessinsider.com)
This suggests that the UK too will suffer a greater incidence of fusarium ear blight on wheat crops — greatly affecting one of our biggest staple crops. (sciencedaily.com)