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Tracking Tar Spot in Corn 2018

September 24, 2018
symptoms of tar

Cases of tar spot in corn have been reported over recent weeks in 12 Iowa counties. Iowa State University Extension and Outreach plant pathologists have been able to confirm the presence of tar spot in four counties via the Iowa State University Plant and Insect Diagnostic Clinic. Agronomists and collaborators have confirmed the remaining cases throughout the state. The current counties with confirmed tar spot presence include: Jones, Jackson, Johnson, Muscatine, Fayette, Clayton, Black Hawk, Buchanan, Delaware, Dubuque, Clinton, Scott, Grundy and Chickasaw counties.

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Samples of Tar Spot in Corn Needed for Research

September 12, 2018 10:54 AM
Blog Post

The University of Illinois, Urbana, is seeking assistance from its friendly neighbor to the west, the corn-state of Iowa, in locating samples of tar spot in corn. This is part of the university’s new research project investigating the genetic variability of the tar spot pathogen.

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