Bacterial Leaf Streak

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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map showing southern rust in 45 Nebraska counties

Crop Diseases Spreading and Increasing

August 6, 2020
Southern rust continues to spread across eastern Nebraska. To date, southern rust has been reported in 45 Nebraska counties. Gray Leaf Spot, Bacterial Leaf Streak and Frogeye Leaf Spot are increasing as well.

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wheat showing signs of disease

Wheat Disease Update

January 27, 2020
In 2019, wet weather during the growing season favored the development of wheat diseases including Fusarium head blight, leaf rust, stripe rust, bacterial streak, and take-all. This update highlights these diseases, the environmental factors that favor their development, and their management.

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Physoderma brown spot lesions

Corn Disease Update

January 8, 2020
In 2019, wet weather during the growing season favored the development of numerous corn diseases including Physoderma brown spot, bacterial leaf streak, stalk rot diseases, and ear rot diseases. This update highlights these diseases, the environmental factors that favor their development, and their management.

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Bacterial leaf streak on corn

Bacterial Leaf Streak of Corn in Nebraska

June 27, 2019
Bacterial leaf streak of corn is increasing as Nebraska. When scouting, growers should take time to differentiate it from gray leaf spot as fungicides will not work on bacterial leaf streak but will help control gray leaf spot.

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Map showing the 70 counties where bacterial leaf streak has how been confirmred.
Bacterial leaf streak has now been confirmed in corn in 70 Nebraska counties.

Crop Disease Update

August 10, 2018
Plant pathologists report on the corn and soybean diseases they're seeing. Bacterial leaf streak has now been confirmed in 70 counties and Southern rust was confirmed in three more counties.

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Bacterial leaf streak and Goss's wilt
Figure 1. (left) Corn leaves with bacterial leaf streak may appear to have a yellow halo around lesions. (right) Recent wet conditions and wounding from hail or storms favor development of Goss's wilt, shown here. (Photos by Tamra Jackson-Ziems)

Conditions Right for Development of Corn Diseases

June 7, 2018
Severe weather and wet conditions across much of Nebraska this week may favor increased development of diseases in corn, particularly bacterial leaf streak and Goss’s bacterial wilt and blight. For assistance in correctly identifying diseases, submit samples to the Plant & Pest Diagnostic Clinic.

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