Stephen Wegulo - Extension Plant Pathologist

Stephen Wegulo

faculty
Work Plant Sciences Hall (PLSH) 406H
Lincoln NE 68583-0722
US
Work 402-472-8735 On campus, dial 2-8735

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

Figure 1. The wheat-mite-virus complex has extreme potential to impact yield the following year if high risk volunteer wheat situations are not managed well
Figure 1. The wheat-mite-virus complex has extreme potential to impact yield the following year if high risk volunteer wheat situations are not managed well. (Photo by Gary Hein)

Why Control of Volunteer Wheat is Critical to Protecting Next Season's Yields

June 23, 2020
Volunteer wheat can provide the summer "green bridge" for the disease wheat streak mosaic and other virus diseases. This almost always occurs as a result of wheat seed shattered from heads during hail storms.

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what leaf rust

Wheat Disease Update: June 10

June 11, 2020
As of June 10, diseases in Nebraska wheat fields remained at trace to low levels. Stripe rust was detected in a grower’s field in southeast Nebraska (Thayer County) on May 27, but hot and dry weather prevented its development.

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wheat showing signs of barley yellow dwarf

Wheat Disease Update: June 2

June 2, 2020
Disease levels are low in most Nebraska wheat fields. Current hot daytime temperatures and dry conditions will keep disease levels low in areas that do not receive rainfall.

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stripe rust on wheat

Wheat Disease Update: Stripe Rust Confirmed in Nebraska

May 28, 2020
During a survey of wheat fields in south central and southeast Nebraska on May 27, stripe rust was found at trace levels in a grower’s wheat field in Thayer County in southeast Nebraska.

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fungal leaf spot disease on wheat

Wheat Disease Update – Barley Yellow Dwarf and Fungal Leaf Spots Increasing

May 21, 2020
A survey of wheat fields in southern west central Nebraska (Furnas and Harlan Counties) on May 19 found most fields to have little or no disease. Two fields had a high incidence of barley yellow dwarf.

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Septoria tritici blotch in the lower canopy of wheat

Wheat Diseases Developing, Scout Fields for Early Detection

May 15, 2020
Reports from the wheat growing regions in Nebraska indicate low or no disease pressure in most growers’ fields. However, some fields are showing low to moderate levels of disease.

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Septoria tritici blotch in wheat

Wheat Disease Update

May 7, 2020
Reports indicate that stripe rust is present in Oklahoma and northeast Kanas. These reports suggest that there is a high likelihood that stripe rust will occur in Nebraska wheat fields. Leaf rust is also likely to occur, but we expect to see stripe rust first.

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wheat damaged by freeze

Assessing Freeze Injury to Wheat

April 24, 2020
It takes a number of warm days (a week or more depending on temperatures) after freezing to determine the condition of the winter wheat crop, so don’t make any quick decisions after a freeze.

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