Tar spot found in Iowa

Tar spot was recently confirmed in some Iowa crop fields.

Meaghan Anderson, extension agronomist with Iowa State University, says the disease was found in Tama and Jasper counties. “Totally in-line with what we would expect from the infection early,” she said, “individual lesions found on one leaf of a V7 corn plant.”

She tells Brownfield the detection came a few weeks earlier than normal. “We’ve got corn that’s at the right stage that it could be infected, along with a lot of moisture to splash things up onto the leaves in some of that early growth, maybe in a way that we haven’t seen in the past several years.”

Anderson says growers need to prioritize scouting during the growing season.

AUDIO: Meaghan Anderson, Iowa State University Extension Agronomist, Iowa Growing Season Update 6/10/2024

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