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Crop Protection Network webinars coming in the spring

February 15, 2021 8:10 PM
Blog Post

Several Crop Protection Network (CPN) webinars are scheduled for this spring. Some of the best minds in agriculture will talk about ways to keep soybeans healthy.

Martin Chilvers, Michigan State University associate professor of plant pathology; Carl Bradley, University of Kentucky extension professor of plant pathology; and Trey Price, LSU AgCenter associate professor of plant pathology will give talks in February, March and April.

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Wanted: Corn seedlings showing symptoms of seedling diseases

May 15, 2017 7:24 AM
Blog Post

Cooler and wetter conditions can effect corn germination and emergence, but they can also provide a favorable environment for seedling diseases.


One research study being conducted by ISU is taking a closer look at seedling diseases in corn. The goals of the research are (i) to identify what pathogens are reducing corn stands and (ii) determine their sensitivity to various fungicides found in seed treatments.


To help expand the scope of this study, we are looking for corn seedlings showing symptoms of seedlings diseases (yellow, dying leaves, wilted, stunted).

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Reducing the Risk of Corn Seedling Disease, Yield Loss After Cereal Rye Cover Crop

December 7, 2016

Despite the environmental and soil benefits that cover crops provide, many farmers are reluctant to try cover crops because of reports of possible yield reduction in the following crop. Recently, Dr. Sotorius Archontoulis suggested that biotic factors could influence whether rye affects corn yield.

Did the pathogen host the party or just show up?

May 20, 2016 12:29 PM
Blog Post

Several corn fields in southeast Iowa are having disease issues this spring. After visiting with several ag retailers and farmers, I had Alison Robertson and Tom Kaspar, a plant physiologist with the USDA-ARS, out yesterday to look at some fields with issues. When we put all the pieces together, we have to try to decide whether pathogens, such as Pythium, started the problem, whether they just took advantage of another problem, or whether it was a combination of issues.

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Specialists weigh in on seedling diseases, corn emergence, and soybean planting

May 3, 2016 3:52 PM
Blog Post

The United States has almost half of the corn crop planted for the season at 45% complete, according to the United States Department of Agriculture (USDA) Crop Progress Report on May 2.

The USDA reported 57% of corn planted in Iowa as of May 1, with the 5-year average being 28%. The weekly report had 7% of corn emerging in Iowa, which is 4% ahead of the 5-year average.

The Crop Progress Report showed 7% of soybeans had been planted in Iowa as of May 1, 1% behind this time last year, but still leading the 5-year average by 4%.

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Could this friendly fungus protect soybeans from seedling disease?

April 20, 2016 11:12 AM
Blog Post

Many of you are aware that a few years ago we collected diseased soybean seedlings from fields across the Midwest and identified organisms associated with the rotted roots. This soybean seedling disease survey was funded by USDA-NIFA and soybean check-off and the identification of the organisms was done in Dr Martin Chilvers' lab at the University of Michigan, and Dr Ahmad Fakhoury's lab at Southern Illinois University. Apart from pathogenic oomycetes and fungi, we also recovered potential biocontrol organisms - fungi and oomycetes that compete with or parasitize pathogens.  

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Do cold, wet soils increase the risk of soybean seedling disease?

April 4, 2016 2:31 PM
Blog Post

Research can be frustrating. For the past 5 years, my lab has been evaluating seed treatments on soybean. In an effort to detect an effect of seed treatment on soybean stand and yield, in 2015 we planted our trials very early (mid-April). A few days later, it rained, soil temperatures dropped below 50 F and we thought we had nailed it!  Finally we would have great data. Wrong!!! Our ICM News article summarizing these data should be posted to ICM News soon.

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