Natural Pathways of Soybean Rust to North America




Rust Pathways U.S. Map -- There are several natural pathways for the introduction of Asian Soybean Rust into the United States. An airborne transmission of rust could originate from infected areas in Africa or the northern reaches of South America. Natural wind currents or a hurricane could uplift spores and carry them across the Atlantic Ocean, the Caribbean Sea or Gulf of Mexico, or the spores could hop from place to place from south to north on what scientists call a "land bridge."