What is 'tar spot' disease and why is it spreading in Kansas corn fields?

TOPEKA (KSNT) - Plant experts say a disease targeting a major cash crop in Kansas is making a comeback in several counties this year, negatively impacting the state's farmers.

Rodrigo Onofre, a plant pathologist with Kansas State University, said in a recent publication on Monday, June 24 from the university the fungal disease commonly known as tar spot, phyllachora maydis, is being detected in corn fields located in four counties this year. Tar spot appears as small, black, raised...