2014
Identification and Biology of Seedling Pathogens of Soybean (Year 3 of 2267)
Contributor/Checkoff:
Category:
Sustainable Production
Keywords:
(none assigned)
Lead Principal Investigator:
Ed Anderson, Iowa Soybean Association
Co-Principal Investigators:
Leonor Leandro, Iowa State University
Gary Munkvold, Iowa State University
Alison Robertson, Iowa State University
Douglas Jardine, Kansas State University
Christopher Little, Kansas State University
Martin Chilvers, Michigan State University
Berlin Nelson, North Dakota State University
Albert Tenuta, Ontario Ministry of Agriculture-Food & Rural
Kiersten Wise, Purdue University
Ahmad Fakhoury, Southern Illinois University
Jason Bond, Southern Illinois University at Carbondale
Craig Rothrock, University of Arkansas
John Rupe, University of Arkansas
Carl Bradley, University of Kentucky
James Kurle, University of Minnesota
Dean Malvick, University of Minnesota
Grover Shannon, University of Missouri
Loren Giesler, University of Nebraska
Heather Kelly, University of Tennessee-Institute of Agriculture
+18 More
Project Code:
1420-532-5667
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:

Unique Keywords:
#breeding & genetics, #soybean seedling diseases
Information And Results
Final Project Results

1. A major review meeting of the USDA/CAP oomycete project was held March 2014 and results were communicated including those researchers on this Seedling Disease project where there are mutual objectives. A promised report detailing the coordination between these two groups is forthcoming.
2. The collection and survey among 12 states for fungal pathogens that cause seedling blight has been completed, in conjunction with significant leveraging with a USDA Oomycte CAP project.
Of the nearly 100 different species collected, 13 appear to be pathogenic (really cause disease), some of which were previously unrecognized as a cause of seedling blight. Each of the 13 pathogens varies in their effect according to geographic region, which may have bearing how future seed treatments are designed.
3. As part of the above survey, diagnostic tools have been developed for each of the 13 pathogenic species to identify them in infected soybean plants.
4. Procedures are being developed to create inoculum that can be used in a variety screening program.
5. Outreach programs have been developed from the lessons learned above and shared in over 50 extension programs in 2014 in 8 Midwest states. Also, a fungicide (seed treatment) efficacy table has been put together for public use.
6. Milestones were reached beyond those listed as their 5 KPIs:
• Fusarium tricinctum confirmed as a pathogen of soybean.
• 15 lines identified showing partial resistance to Rhizoctonia solani
• The range of soil temperature and soil pH levels that are most favorable for several species of Fusarium and Pythium were determined – as indicator of the type of environment or habitat they favor.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.