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

Photos of 3 wheat fields: with stripe rust, leaf rust, and healthy
(From left) Figure 1. A hot spot of stripe rust in a research plot at the ARDC near Mead on April 14. Figure 2. Leaf rust in a research plot at the ARDC near Mead on April 14. Figure 3. A healthy wheat field in Thayer County on April 13. (Figures 1-8 by Stephen Wegulo)

Stripe Rust & Aphids Confirmed in Nebraska Wheat April 15, 2016

Wheat disease surveys on April 8 and April 12-14 found stripe rust and leaf rust at trace to low levels in south central and southeast Nebraska and in the Panhandle. Given the locations of outbreaks in Banner County this spring are the same as when the disease was identified in seedlings last fall, the two rusts may have overwintered. See more reports and management recommendations.

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Wheat Leaf Rust Confirmed in Nebraska March 31, 2016

On March 30, leaf rust was found in several wheat fields in Nuckolls County in south central Nebraska. Severity was trace (Figure 1), but the rust was found in every field surveyed. Presence of leaf rust in Nebraska this early in the growing season suggests it may have overwintered or is a result of unusually warm winter temperatures which resulted in earlier than normal movement of spores from southern states into our region.

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Wheat Rust in Kansas; Start Scouting Nebraska Fields March 22, 2016

Due to above average temperatures this winter and going into the spring, coupled with moisture, stripe rust and leaf rust have moved north from southern states sooner than expected.

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Factors to Consider When Deciding Whether to Treat Stripe Rust in Wheat May 22, 2015

The first appearance of stripe rust pustules in a field indicates that spores arrived in the field and initiated infections at least seven days earlier. Apply a fungicide if stripe rust is seen in a field and the following conditions or factors exist:
  1. Wet, cool weather.
  2. The flag leaf has emerged (or earlier depending on the situation).
  3. It's a susceptible variety.

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Wheat Disease Update: Leaf Rust Confirmed in Eastern Nebraska May 22, 2015

Severity of wheat diseases has increased significantly over the last week. At UNL's Agricultural Research and Development Center (ARDC) near Mead.

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