University of Illinois Extension Plant Pathologist Nathan Kleczewski recently conducted an interview through the Illinois Extension news service regarding pre-season management and preparation for tar spot in 2019.
Tar spot is a foliar disease of corn that commonly occurs throughout Mexico, Central America, South America and the Caribbean. The disease was identified in the United States for the first time in 2015 in northern Illinois and Indiana. As of 2018, it had been confirmed in Iowa, Michigan, Wisconsin, Ohio. and Florida. The whole interview can be found here.
Some quick points from the interview:
For resources on tar spot, visit the Crop Protection Network, which recently posted a free management guide for the disease, this year.