Technical Bulletin No. 149 “Fusarium oxysporum f.sp. cubense Tropical Race 4: A Threat to the National Banana Industry - Brazil

Technical Bulletin 149 (2020) provides an in-depth description of Fusarium oxysporum f.sp. cubense Tropical Race 4 (TR4), outlining its symptoms, host susceptibility, global distribution, epidemiology, and impacts on banana production. It details diagnostic criteria, differentiates TR4 from moko disease and abiotic wilt, and offers strict biosafety procedures for field inspections, sampling, containment and reporting of suspect cases. The document also establishes guidelines for surveillance surveys, delimitation of risk areas, traceability, georeferencing, and safe handling of plant material, aiming to prevent the introduction and spread of TR4 in Brazil.