Corn Disease

Tar spot on corn leaf

Black Spots in Corn? Southern Rust, Tar Spot and More

August 29, 2024
Differentiating between corn diseases can be difficult, but it's vital for effective long-term management. Read this article to learn more about the identifiable characteristics of Nebraska's most common and emerging corn diseases.

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Tar spot symptoms on corn leaf

Corn Disease Update: Fungicide Expectations for Disease Control

August 15, 2024
Persistent wet weather in the early growing season set the scene for corn diseases to flourish. This article provides guidance on using foliar fungicides to mitigate loss, regarding application timing, disease history, crop stage and weather impacts. 

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Man and woman look at seedlings in containers
Shaonpius Mondal and Sofiya Arora, a master’s student, screen wheat seedlings for virus transmission experiments. Mondal, an assistant professor of entomology, has extensive experience in the study of viral infections of crops. (Photo by Craig Chandler, University Communication and Marketing)

Mondal Lab Pioneers Research into Pest-borne Viral Infections of Cereal Crops

August 7, 2024
Three main experiments are underway in Mondal’s lab to target the process of disease transmission from crop pests to wheat and small grains crops.

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This Week on N Field: Southern Rust 2024

August 2, 2024
UNL Extension Specialist Tamra Jackson-Ziems discusses concerns about the early onset of southern rust in Nebraska this year.

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This Week on N Field: Bacterial Leaf Streak

July 26, 2024
Is it bacterial leaf streak or gray leaf spot? These scouting tips will help you identify the culprit creating lesions on your corn.

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Southern rust spots on corn leaf

Southern Rust Spreading in Eastern Nebraska

July 25, 2024
Southern rust development and presence in several eastern Nebraska counties was earlier and more widespread this year. Producers are encouraged to scout their fields, and send samples to UNL for assistance with identification.

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Closeup of black spots on corn leaf
Figure 1. Tar spot black stromata develop on the upper leaf first then become visible underneath too. Over time, the spots increase in size and elongate. (Photos by Tamra Jackson-Ziems)

Corn Diseases Developing in Some Fields — What To Watch

July 12, 2024
Tar spot has been confirmed in several eastern Nebraska counties in recent weeks, and distribution of the fungus is expected to continue expansion this year.

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This Week on N Field: Tar Spot 2024

July 12, 2024
Nebraska producers should be on the lookout for tar spot — watch this episode of N Field for quick tips on scouting and identification.

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