Tar spot of corn

Tar spot of corn confirmed in June in Missouri – the earliest ever

July 2, 2023 | By Many Bish, University of Missouri Extension

COLUMBIA, Mo. — Tar spot of corn has been confirmed in two northern Missouri counties: Holt County in northwestern Missouri and Marion County in northeastern Missouri, as well as in six counties in central Iowa and one in northeastern Kansas. This is the earliest tar spot has ever been found in the Missouri. The disease…

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Tar spot of corn confirmed in Lewis County, Mo.

September 6, 2022 | By Linda Geist, University of Missouri Extension

COLUMBIA, Mo. — University of Missouri’s Plant Diagnostic Clinic confirmed tar spot in three corn samples collected in the Missouri counties of Lewis and Holt on Aug. 30, according to Peng Tian, the clinic’s lab director. Tar spot of corn is an emerging disease threat. In 2018, yield losses of 20-60 bushels per acre were…

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