Diseases

New Tar Spot Publication Available

  • February 8, 2019

  • Nathan Kleczewski

A new publication on Tar spot of corn is available through the Crop Protection Network.  In this publication we have summarized our current knowledge of the disease, it’s impacts, as well as presented management suggestions.  You can access the link to the library by clicking here.
In addition, I will be presenting a webinar on Tar spot at the end of February.  Pay attention to the Bulletin and my Field Crop Disease blog for additional details in the near future.…

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Soybean Quality Issues in 2019

  • February 8, 2019

  • Nathan Kleczewski

I have had several conversations with members of the agricultural community regarding seed quality resulting from issues derived from delayed harvest and persistent wet conditions encountered in many parts of Illinois in 2018.  For more information on what seed producers and soybean farmers should keep in mind going into this season, see my new article published on the Illinois Field Crop Disease blog, found by clicking here.…

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Corn Hybrid Response to Tar Spot

  • September 7, 2018

  • Nathan Kleczewski

Hybrid resistance is a key component for managing many plant pathogens.  To access a new sheet on hybrid response to tar spot in corn click the following link: Corn Hybrid Response to Tar Spotfin.docx.
We are currently rating multiple variety trials in affected areas across states to generate more hybrid-specific data.  More information will be available soon.…

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Tar Spot in corn- requesting your help

  • August 24, 2018

  • Nathan Kleczewski

Tar spot is a relatively new disease in corn.  It was first described in Illinois and Indiana in 2015, and was first located near DeKalb.  Tar spot has been detected to some degree in Northern Illinois each year since.  However, typically infections are sparse and the disease does not come in until later in the season.  Consequently, yield loss due to this disease has been minimal, and the disease mostly considered an oddity.
However, in parts of Latin America,…

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Physoderma reports on the increase in the region

  • August 10, 2018

  • Nathan Kleczewski

Physoderma brown spot and node rot is a disease that has been increasing in incidence in the Midwest over the past 5-10 years.  We observed this disease frequently during scouting trips throughout the state conducted in late July.  Recently, we have been receiving more reports of this disease and questions pertaining to it’s impact on the crop and management.  I recently wrote an article on this disease and management recommendations on the Illinois Field Crop Disease Blog. …

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