Nathan Kleczewski Email

This author has written 69 articles

New research on soybean cyst nematode shows widespread prevalence of populations with elevated reproduction on PI88788 derived resistance. What are the implications?

  • June 12, 2023

  • Nathan Kleczewski

Soybean cyst nematodes (SCN) cause more losses in Illinois soybeans than any other pathogen. For example, in 2021 alone, losses attributed to SCN were estimated at over 14 million bushels, valued at over $185 million. Frequently the effects of SCN go unnoticed, as many of our modern cultivars do not express noticeable aboveground symptoms of infection except under special circumstances. Even when aboveground symptoms are absent, SCN infections can result in losses of approximately 10% if the nematodes are present at sufficient densities.…

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Impact of recent rains and scouting corn and soybeans

  • July 16, 2020

  • Nathan Kleczewski

Recent fronts that have pushed through the state, giving relief to many areas that have been stressed by heat and a lack of water.  That’s great for productivity, and also can impact diseases.  A new post on the disease outlook and considerations can be found by clicking here.…

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post on fungicides for hail damaged crops

  • July 12, 2020

  • Nathan Kleczewski

That was one heck of a storm yesterday.  Many fields throughout East central Illinois were severely affected by nickel sized hail.  Although my three year old stated that we should, “use some tape” to fix the damaged tissues, some will consider fungicide applications.  A new post on the subject can be found here. …

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New Corn Disease Articles Available

  • July 6, 2020

  • Nathan Kleczewski

We have several articles on the Illinois Field Crop Disease Hub that have some timely information for you.  First, a discussion on bacterial leaf streak of corn, which was detected last week in Illinois.  Next, part one of our series on corn nematodes.  Finally an update on corn tar spot and what to keep in mind with that disease this season.
the articles can be found by clicking this link.  If interested,…

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Wheat disease updates in Illinois

  • May 6, 2020

  • Nathan Kleczewski

Wheat development in most in Southern Illinois fields is between Feekes growth stage (FGS) 9-10.5.1. Wheat in the central portion of the stage varies from FGS 6-9.
Stripe rust was detected in Eastern Madison County as of 5.5.20, and conditions are favorable for disease development and spread.  This is a cool season disease that loves wet weather and temperatures in the high 40’s through the mid 60’s.  Fields should be scouted for the disease, keeping in mind that it often starts in small pockets,…

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Wheat fungicide efficacy table available

  • April 10, 2020

  • Nathan Kleczewski

I have posted the wheat fungicide efficacy table for Illinois, as many will be making decisions soon.  Click here to view the post on the Illinois Field Crop Disease Hub.  Eventually I will not repost links from this site to the Bulletin, so make sure you sign up on that page for email updates!  Follow me on Twitter @ILplantdoc…

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