Stem zone lines do not indicate charcoal rot in soybeans
Charcoal rot is a disease that we see in years where soybeans are stressed for a significant portion of the season due to drought. If you look at older…
Tar Spot on Corn: Setting the Record Straight
As we finish our corn harvest in 2018, we have noticed an increasing amount of information pertaining to tar spot circulating through the agronomic community that is not entirely…
Physoderma Brown Spot and Node Rot in Corn
Those of you who follow me on twitter (@ILplantdoc) likely noticed numerous photos that I posted earlier in the season of Physoderma brown spot and node rot (PBS) on…
Spray Decisions for Frogeye Leaf Spot in Soybeans
Soybeans throughout the state are maturing and consequently, many people have been asking questions about the need to make a fungicide application for suppressing frogeye leaf spot (FLS) in…
Tar spot on corn in Illinois. Image J. Donnely.
Be on the lookout for Tar Spot on Corn
Today we received reports of Tar spot appearing in corn grown in Illinois. We are currently studying tar spot of corn in the United States, and are requesting that…
Glume Blotch in Wheat
This week we have had several reports of Stagonospora glume blotch in wheat. This is a fairly common disease that is caused by the fungus Stagonospora (or Parastagonospora) nodorum. The…
Tips for optimal use of FHB Risk Tool
One of the hallmarks of the United States Wheat and Barley Scab Initiative was the development of the Fusarium Head Blight Prediction tool (or FHB Risk Tool). This tool…
Sudden Death Syndrome (SDS) Brown stem rot (BSR) and Southern stem canker all can produce similar foliar symptoms in soybean. For this reason, the entire plant must be examined to determine the causative pathogen.
When scouting soybeans, don’t just scout the foliage
Sudden death syndrome (SDS) is a disease of concern for soybean producers in Illinois and the surrounding region. The disease is caused by a soilborne fungus (Fusarium vilguliforme) that…
Fungicide Efficacy Table for 2018
Each year our national wheat disease working group (NCERA-184) works collaboratively to update the wheat fungicide efficacy table. We utilize data from our field trials to generate overall fungicide…