Diseases

Cool season viruses in wheat

  • April 14, 2019

  • Nathan Kleczewski

Currently, most small grains are approaching jointing or just past jointing in many parts of the state.  Now is the time that you most likely will start to see early season viral diseases in some fields, specifically Wheat Soilborne Mosaic Virus and Wheat Spindle Streak Virus. These diseases are transmitted by soil borne microbes that thrive in cool, wet conditions. Infected plants typically are chlorotic and may be stunted. Often affected plants occur in low lying areas of the field or areas suffering from compaction.…

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Early season diseases in soybeans

  • April 11, 2019

  • Nathan Kleczewski

Now that the soils are warming, some producers are discussing planting soybeans in the ground.  When considering early planting of soybeans, there are two diseases that should be considered: 1) Sudden death syndrome (SDS)  and 2) Pythium root rot (PRR)
Both SDS and PRR are favored by cool, wet weather.  In the case of SDS, early season infections can reduce stands, and also result in colonization of root systems.  The SDS pathogen remains in the lower portion of the stem and roots until the the plant reaches the reproductive stages. …

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Remember to check your hybrids for tar spot ratings, scout your fields

  • April 10, 2019

  • Nathan Kleczewski

It is that time of year again.  Soon corn will be in the ground, and the 2019 field season will be taking off.  It is no surprise that I spent the majority of my time on the speaker circuit discussing tar spot in corn.  We have learned a fair amount since then, but there are many more things that need to be researched and learned before we have excellent tar spot IPM management programs.  However, there are a few points you should keep in mind this season that can help you determine your risk for tar spot and management practices that can help your bottom line.…

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Register now for Tar spot Webinar, March 1

  • February 11, 2019

  • Nathan Kleczewski


3/1/19 at 9:00 am CST
 
 
Join Dr. Nathan Kleczewski from the University of Illinois Extension  for an update on Tar spot in corn.  This disease was first observed in the United States in 2015 in Northern Illinois and Indiana.  In 2018, the disease significantly affected corn production in the Midwest and Florida.  What is tar spot of corn?  How does it work?  What is our current understanding of this disease and its management? …

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What effect will cold temperatures have on pests and pathogens?

  • February 10, 2019

  • Nathan Kleczewski

Nathan Kleczewski Research assistant Professor and Extension Field Crop Pathologist
Nick Seiter- Research Assistant Professor and Extension Field Crop Entomologist
 
Many in the Illinois agricultural community are wondering what effects the recent extreme cold might have on pests and pathogens. While it would be nice if the cold temperatures we are experiencing could help to reduce our potential for pest damage, past experience tells us that the most serious pests we deal with are unlikely to be impacted much by these conditions.…

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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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