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.
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 any CCA, producer, or ag professional that encounters this disease, even if outside of Illinois, please send samples to Diane Plewa at the University of Illinois Plant Diagnostic Clinic.
S-417 Turner Hall, 1102 S.Goodwin Ave.
Urbana, IL 61801
Please note “Tar spot study” on the sample.
I received notice of stripe rust in S. Illinois today. Stripe rust is an important disease affecting wheat. Please find an article on this disease and management by clicking here.
If you locate stripe rust in your field please tweet a picture to me (@ILplantdoc) or email (email@example.com) with the wheat variety, growth stage, and approximate percent of field infected. This information will be useful to IL wheat producers this year and in upcoming seasons.
An example of a stripe rust in wheat. Photo N. Kleczewski 2016