Farms.com Home   News

Will Tar Spot Overwinter In Northern Illinois?

By Russel Higgins
 
 
1-DSC 0696
 
In earlier posts we shared that Tar spot, specifically caused by Phyllachora maydis, had been confirmed in Illinois. We are now trying to determine if the fungus will survive our winter months. A trial was established in cooperation with Dr. Santiago Mideros, University of Illinois plant pathologist. Corn leaves exhibiting Tar spot symptoms were collected and placed in mesh bags. Samples will be left both on the soil surface and buried to emulate corn residue incorporated by tillage. Next spring the samples will be collected and the survivability of the pathogen determined.
 
Despite the November date, our recent mild weather pattern has prevented our soil temperatures from dropping below 50 degrees. The November 4th Soil temperature measured under bare soil at the NIARC was 54.5 degrees. Current University of Illinois recommendations encourage fall applications of anhydrous ammonia to take place after the soil temperature at 4 inches reaches 50 degrees and is falling. 
 

Trending Video

Conservation Corner - PLAN app

Video: Conservation Corner - PLAN App

Since 2020 the Panhandle Research Education and Extension Center has successfully operated a web-based dashboard to support the Peer Learning Agricultural Network. Also known as plan, this platform has enabled growers to access critical data. Now that data can be accessed anytime anywhere with the Plan Mobile Irrigation Management app.