tar spot | Red River Farm Network

Planter-Applied Fungicide Offers Early Defense Against Corn Disease

Published March 6, 2026

FMC Technical Service Manager Madison Wozniak describes tar spot as a disease that will overwinter in the soil. "You're going to see it pop up in your crops as long as the environmental conditions are right and it has a…

Tar Spot ID’ed in ND

Published September 29, 2025

North Dakota has confirmed its first tar spot case of 2025. The disease was detected earlier this month and has since been found in four fields across Richland and Cass counties. Most of the cases showed very low incidence and…

Tar Spot Threatens Corn Yields

Published July 11, 2025

Tar spot, a fast-moving corn disease, is spreading across key Corn Belt states, with confirmed cases in Nebraska, Iowa, and Kansas. AgroLiquid National Agronomist Stephanie Zelinko urges growers to scout fields regularly. “We already have confirmed cases, but because it…

Consider Disease Risk

Published December 29, 2024

Brevant Seed Retail Sales Agronomist Tyler Stastny says disease pressure was a big problem this past growing season. Stastny wants farmers to consider that when making decisions for 2025. Tar Spot was one of his bigger challenges. "You take Northern Corn…

Wet Spring Resulted in More Disease Issues

Published December 19, 2024

Many crops throughout the Northern Plains saw increased disease pressure during this past year due to early rains. "We definitely saw more wheat diseases this year than in the last five years, but we did a really good job of…

Proactive, Not Reactive

Published December 18, 2024

Tar spot was one of the issues corn growers faced in 2024. "I think it's no longer if you're going to get it, it's when you're going to get it," said Kim Tutor, technical marketing manager, BASF. "With tar spot…

Tar Spot Concerns

Published October 30, 2024

Tar spot has been detected in southern Minnesota, eastern South Dakota, and southeastern North Dakota. “We haven’t seen high enough levels to cause significant yield loss,” says Dean Malvick, plant pathologist at the University of Minnesota. “That doesn’t mean it…

Articles tagged under: tar spot

Planter-Applied Fungicide Offers Early Defense Against Corn Disease

Tar Spot ID’ed in ND

Tar Spot Threatens Corn Yields

Consider Disease Risk

Wet Spring Resulted in More Disease Issues

Proactive, Not Reactive

Tar Spot Concerns

Tar Spot Threatens Corn Yields

Tar Spot a Growing Concern

Take Proactive Approach to Tar Spot and Other Diseases

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