Integrated Crop Management News

Document Type


Publication Date



The prevalence of Phytophthora rot this year has been higher than in past years, perhaps due to more races that can infect soybean cultivars with the Rps-1k gene. Reports indicate that occurrence of this disease was still high in late July. So, how much damage will this disease cause for the rest of the growing season? In Iowa, major documented damage by this disease occurs in seedlings as stand reduction caused by damping-off. Stand reduction by root rot and stem rot in advanced growth stages is minor, thus damage by this disease in the rest of the season should be minimal.

Copyright Owner

Iowa State University



File Format





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 Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user.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