Stephen Wegulo - Extension Plant Pathologist

Stephen Wegulo

Faculty Bio
Website: Wheat Disease section of CropWatch Plant Disease Management
Twitter: @wegulo2

Figure 1. A grower’s wheat field in Webster County with low disease levels on May 23. (Photos by Stephen Wegulo)
Figure 1. A grower’s wheat field in Webster County with low disease levels on May 23. (Photos by Stephen Wegulo)

Wheat Disease Update May 24, 2019

Several diseases were found in wheat in south central and eastern Nebraska this week and scab is likely to develop, given current conditions. Growers are encouraged to decide now as to whether to treat as once it appears, it's too late to treat.

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Powdery mildew in wheat

Levels of Wheat Diseases Low, But Likely to Increase May 17, 2019

A survey of wheat fields May 13-16 in the southeast, south central, southwest, and southern Panhandle regions of Nebraska revealed trace to low levels of disease, with most fields a luxuriant green with a high yield potential.

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(L-R) Wheat leaves with stripe rust, leaf rust, and powdery mildew

It is Time to Start Scouting for Wheat Diseases April 18, 2019

The wheat growing season in Nebraska has started and and regular scouting for early disease detection is recommended, and will be especially important this year due to the excessive moisture we've had.

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Goss's Wilt of corn

Nebraska Plant Pathology: A Culture of New Diseases January 23, 2019

Though relatively small, UNL's Department of Plant Pathology has played a significant role in the discovery of many economically important plant diseases, including most recently, a new fungal pathogen causing Fusarium head blight of wheat. This article is from the 2019 Nebraska Crop Management Conference Proceedings.

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Bacterial leaf streak in wheat

Wheat Disease Update: Bacterial Streak and Black Chaff January 10, 2019

In this article from the Proceedings of the 2019 Crop Production Clinics the author reviews disease impacts in wheat, particularly bacterial streak, also known as black chaff.

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What’s New in Plant Pathology January 9, 2019

This article, from the Proceedings of the 2019 Crop Production Clinics, addresses new and updated product labels for disease management, a report from the Plant and Pest Diagnostic Clinic, changes in the Department of Plant Pathology, and the initial US finding of Fusarium boothii on wheat in Nebraska.

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UNL variety trials conducted in eastern Nebraska are an important process to help guide grower’s variety selection.
Figure 1. UNL variety trials conducted in eastern Nebraska are an important process to help guide grower’s variety selection.

Winter Wheat Varieties with an Eastern Nebraska Fit September 27, 2018

Winter wheat growers in eastern Nebraska will want to check out the newer winter wheat varieties described here as well as a table of comparable traits to aid in selecting a variety best suited for their operation.

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Stinking smut (left) and loose smut of winter wheat
Fungal diseases of wheat include stinking smut (left, Figure 1) and loose smut (right, Figure 2). (Photos by Stephen Wegulo)

Should I Plant Treated Wheat Seed? August 29, 2018

Using clean, certified, treated winter wheat seed optimizes the chances of obtaining high yields. Seed-transmitted diseases and fall insects can reduce grain yield as well as quality next summer.

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