Stephen Wegulo
faculty
- Professor Plant Pathology University of Nebraska–Lincoln
Work
402-472-8735
On campus, dial 2-8735
Faculty Bio
Website: Wheat Disease section of CropWatch Plant Disease Management
Twitter: @wegulo2
Figure 1. Severe symptoms of wheat streak mosaic in volunteer wheat in sunflower stubble in Deuel County in November 2016. Such a field significantly increases the risk of infection of wheat in nearby fields. (Photo by Gary Hein)
Growers Urged to Keep a Watchful Eye for Wheat Viruses This Spring
January 25, 2017
While the mild fall promoted wheat establishment, it also favored survival of wheat curl mites, the leading vector of several viruses common to Nebraska wheat. While much of the state's wheat crop entered winter in very good condition, growers are urged to scout for viruses this spring and assess yield potential of individual fields when making management decisions.
Wheat Disease Management Tips for 2017
December 9, 2016
A number of diseases were reported in Nebraska wheat this fall. In this article plant pathologist Stephen Wegulo outlines how to develop a comprehensive plan to tackle this yield challenge, starting with steps growers can take this winter.
Stripe, Stem, and Leaf Rust in Fall-Planted Wheat
November 11, 2016
Stripe rust, leaf rust, and stem rust have been identified in fall planted wheat in Nebraska, extending into areas where it had previously not developed in the fall. Plant Pathologist Stephen Wegulo looks at the outbreak, conditions contributing to rust development this fall, and the economic and management issues.
Control Volunteer Winter Wheat and Other Weeds Now to Increase and Protect 2017 Yields, Income
June 23, 2016
By far, the greatest risk of losses from mite-vectored viruses occurs when there is a summer "green bridge" of volunteer wheat emerging before harvest. This almost always occurs as a result of wheat seed head shatter from hail storms (Figure 1).
Wheat Disease Update
June 10, 2016
A survey of wheat research plots in east central Nebraska found a variety of diseases, including severe rust on wheat and barley.
Stripe Rust Increasing; Spray Your Wheat to Protect the Flag Leaf
June 2, 2016
Stripe rust has significantly increased in all wheat-growing areas in Nebraska. It is recommended that wheat be treated with a fungicide to protect the flag leaf. If the incidence (percentage of flag leaves diseased) or severity (percentage of the flag leaf area diseased) is less than 50%, spraying a fungicide will significantly reduce yield loss due to stripe rust.
Wheat Disease Update - Late May
May 26, 2016
A survey of wheat fields in southeast and south central Nebraska this week found most fields looking healthy with little or no disease. Fungal and virus diseases were found at varying levels in some fields. Depending on growth stage and disease present, fungicides may still be beneficial.