Thu, June 23, 2016
By Brian Diers, Soybean Breeder, University of Illinois
Planting the most resistant varieties available is the foundation of an SDS management program. Our work on genetic resistance to SDS has made good progress towards the goal of providing growers with soybean varieties with increasing SDS resistance.
At least 17 varieties and germplasm lines have been released. Mapped and confirmed genes are now being integrated into breeding programs through the use of marker-assisted selection, which should continue to increase the pace of developing SDS-resistant varieties.
Mon, June 6, 2016
by Mehdi Kabbage and Damon Smith, Soybean Plant Pathologists, University of Wisconsin.
Sclerotinia stem rot (SSR), also called white mold, is a sporadic but yield-limiting disease in the north-central region. Specific weather conditions must be present at the time of soybean flowering -- if they are absent, then SSR is unlikely to occur. One of the objectives in our current work on Sclerotinia stem rot is to more clearly define the effect of weather and application timing on the efficacy of fungicides.
Mon, May 16, 2016
Kiersten Wise, Plant Pathologist, Purdue University and Loren Giesler, Plant Pathologist, University of Nebraska-Lincoln
In this video, we show how to recognize seedling diseases in the field, and how to collect a sample to confirm the field diagnosis. We have also updated the publication Fungicide Efficacy for Control of Soybean Seedling Disease
as of April 2016.
Tue, May 10, 2016
by Antonio Mallarino, Soybean Agronomist, Iowa State University
Over the past year, with funding from the North Central Soybean Research Program, a team of agronomists from five north-central states have collected and analyzed all of the published and unpublished university field response-based information about micronutrients and soybeans in the region. We plan to summarize this information in a comprehensive publication to be distributed widely in the fall of 2016.
Tue, Apr 19, 2016
by Jim Kurle, Soybean Plant Pathologist, University of Minnesota
Effective control of seed and seedling rots is becoming increasingly important to protect the value of seed, currently the largest single expense in soybean production. We have found that a range of partial resistance is present in a collection of soybean lines that could be easily incorporated into breeding lines adapted to short growing seasons.
Mon, Mar 21, 2016
by Alison Robertson, Plant Pathologist, Iowa State University
Strategies such as quantitative resistance, also called partial resistance or tolerance, that put less selection pressure on the pathogen population should become a high priority in Phytophthora disease management and cultivar development.