Field Crop Virtual Breakfast on June 20 will discuss protecting fields from tar spot

MSU Extension’s Field Crop Virtual Breakfast continues June 20 with a discussion on identifying and managing corn tar spot, a new fungal pathogen, with MSU’s Martin Chilvers.

Tar spot on corn
Tar spot on corn. Photo by Bruce MacKellar, MSU Extension

The 2018 growing season showed rapid expansion of a corn leaf disease called tar spot. First found in the U.S. in 2015 and in Michigan in Allegan County in 2016, the disease spread widely around fields in southwest Michigan. One legacy of the disease is the amount of volunteer corn that is being seen in 2019. Severely infected plants deteriorated rapidly in late August and early September last year, causing significant lodging and poor test weight in corn.

To learn more about this topic, join the Field Crops Virtual Breakfast at 7 a.m. on Thursday, June 20, 2019, via Zoom with Michigan State University Extension field crops pathologist Martin Chilvers.

Chilvers will discuss tar spot’s life cycle and areas where the disease was found in 2018, how to identify the symptoms, when to scout, when to treat and what fungicides might provide the best control. Participants will have the opportunity to ask questions during the meeting. Jeff Andresen, MSU’s field crops climatologist, will also provide an updated outlook for weather. Please join us.

Tar spot lodged corn
Severely lodged corn in field infected with tar spot in 2018. Note the stalk deterioration caused by the disease in the right picture. Photo by Bruce MacKellar, MSU Extension.

Participating is easy!

You can join using your computer or mobile device (audio and visual) following the Zoom link: Or, call in from your phone (audio only) by dialing 669-900-6833 and enter meeting ID 552-324-349.

To receive a weekly email reminder of the Virtual Breakfast, sign up at Participants receiving emails can opt in or out at any time.

2018 Map of Tar Spot Areas
Areas where tar sport was confirmed in Michigan in 2018.

Can’t make it Thursday morning? Watch the recording!

For those who cannot join on Thursdays at 7 a.m., the Virtual Breakfast sessions will be recorded for later viewing with closed-captioning on the Field Crops Virtual Breakfast webpage. Podcasts are also available on the following platforms: iTunes and Spotify.

Don’t forget to follow us on social media. Stay up-to-date on what is happening in Michigan field crops by liking the MSU Extension Field Crops Facebook page or following @MSUEFieldCrops on Twitter.

Scheduled topics and dates

Note that these may change to cover breaking pest and weather situations.

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