It resembles "maize dwarf mosaic" found in Ohio, Symptoms vary widely and may include red or purple streaking of leaves or severe stunting. Research is underway and is being intensified.
Lambe, R. C. and Dunleavy, J. M.
"A New Disease in Iowa Corn Fields,"
Iowa Farm Science: Vol. 19
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol19/iss9/2