The very wet and warm planting conditions across much of Iowa have been ideal for the development of Phytophthora damping off. Plants infected by Phytophthora have a brown discoloration extending from the root up the stem (see photo). Alison Robertson's lab is continuing to assess the diversity of Phytophthora in Iowa and requests your help in this project. The lab would like to obtain plant samples from suspected Phytophthora-infected plants as you find them.
Iowa State University
Robertson, Alison E. and Stewart, Silvinia, "Request for Phytophthora of soybean plant samples" (2007). Integrated Crop Management News. 1053.
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 Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user.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/.