Asian soybean rust is caused by the fungus Phakospora pachyrhizi. The soybean rust pathogen has been moving progressively westward from its center of origin in China and has now reach North America. Soybean rust has gained considerable attention in the US since its discovery in nine Southern states this fall. Currently, there is much speculation and apprehension on how soybean rust will develop and impact soybean production in the U.S. The reality of the situation is that soybean rust has been a devastating disease in many parts of the world. Thus, it is prudent that we must respect its potential to reduce yield, and be prepared to manage it starting in 2005. This publication was developed as a resource to acquaint crop advisors and soybean growers with the soybean rust pathogen, soybean rust epidemiology and how this disease can be managed to limit yield loss.