In a few years, tar spot has surfaced as a main concern in several key states. The corn disease stole upwards of 60 bu. per acre in severely infected fields in 2022, per Purdue University Extension.

A new disease is plaguing cornfields across the Midwest. Phyllachora maydis is the fungus that causes a corn disease called ...

Tar spot decimated many central Illinois cornfields in 2021. But the disease was nearly a no-show in those same fields this past year. One farmer recently asked Ken Ferrie, “What kind of risk do ...