One of the underlying reasons soybean rust was not found in the Midwest in 2005 was the light inoculum load heading into the season. While rust was found as far north as Missouri and throughout the Gulf Coast states in 2004, the winter of 2004/05 was particularly cold, killing back any potential overwintering host (kudzu); thus, the rust fungus did not survive except for deep in the Florida peninsula.
Iowa State University
Mueller, Daren S., "Three things that will affect soybean rust development in the Midwest in the future" (2006). Integrated Crop Management News. 1192.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.