Bacterial Leaf Streak

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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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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Extension educator county map

Extension Crop and Pest Reports (July 22-26)

July 26, 2024
Extension educators share their observations in fields across Nebraska this week.

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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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Cephalosporium stripe on wheat

Wheat Disease Update: Overview of the 2023 Growing Season

June 28, 2023
Eastern Nebraska wheat fields weren't significantly impacted by disease this growing season; however, due to abundant rainfall, western Nebraska and Panhandle growers have observed moderate levels of Fusarium head blight and severe tan spot.

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Common smut on corn

Disease Development Associated with Early-season Hail Damage in Corn

July 7, 2022
Several diseases resulting from hail and wind injury have been verified in corn across the state and are likely to worsen under current environmental conditions.

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Wheat field day attendees
Figure 1. A wheat field day at the High Plains Ag Lab in Cheyenne County on June 15.

Wheat Disease Update

June 18, 2021
The majority of fields visited in southern Nebraska this week had only trace levels of Fusarium head blight, but moderate to high levels of FHB were observed in susceptible varieties in a state variety trial in Red Willow County.

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Fusarium head blight
Figure 1. Fusarium head blight in a grower’s field in Nuckolls County on June 8.

Trace to Low Levels of Fusarium Head Blight Observed in Wheat Fields in South-central and Southeast Nebraska

June 10, 2021
In southern Nebraska, Fusarium head blight has been observed. In other parts of the state, hot temperatures have slowed the development of new stripe rust, but heavily infected fields are now experiencing accelerated drying out of leaves.  

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