Gary Hein - Director of the Doctor of Plant Health Professional Program

Gary Hein

faculty
Work Plant Sciences Hall (PLSH) 279D
Lincoln NE 68583-0933
US
Work 402-472-3345 On campus, dial 2-3345

Faculty Bio

Volunteer corn

Control of Roundup/Liberty Resistant Corn Volunteers in Enlist Corn

August 5, 2021
Results of a study evaluating Assure II for Roundup/Liberty-resistant corn volunteer control in Enlist corn and correct timing of application for use in corn-on-corn production systems.

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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)

Do You Need to Control Volunteer Wheat to Protect the Next Season’s Winter Wheat Crop?

June 29, 2021
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 hailstorms.

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"Sphere of influence" for virus spread following an extensive neighborhood-wide hail event

Pre-Harvest Hail across Western Nebraska Necessitates Breaking the Green Bridge

August 30, 2019
This year late-season hailstorms led to increases in volunteer wheat that emerged shortly before wheat harvest. If left uncontrolled until wheat emergence in the fall, growers can expect a large buildup of mites and virus, leading to yield-robbing disease outbreaks next spring and summer.

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Severe wheat treak mosaic in Deuel County.
A wheat field with severe wheat treak mosaic in Deuel County. (Photo by Stephen Wegulo)

Risk Factors for Virus Disease Spread and Development in Winter Wheat

August 30, 2018
Managing the wheat curl mite is critical in managing the disease risk to winter wheat, particularly in central and western Nebraska. This article outlines key risk factors to manage.

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Screen capture of video demonstrating spread of wheat curl mite

Videos: Controlling the Wheat Curl Mite and Viruses in Winter Wheat

August 30, 2018
Four videos illustrate the spread of wheat curl mites among neighboring wheat fields and the importance of controlling these mites to curtail the development of three key viruses of winter wheat in Nebraska.

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Inforgraphic showing how one field can serve as a green bridge for wheat curl mite and multiple viruses to a neighbor's field.

Stopping the Spread of Wheat Streak Mosaic Virus

August 20, 2018
For wheat growers, one aspect of being a good neighbor is controlling volunteer wheat after harvest to stop wheat curl mites from moving into the new crop of wheat and transmitting viruses, particularly wheat streak mosaic virus. Volunteer wheat should be controlled in time to provide a two-week break in the green bridge.

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Severe wheat streak mosaic
Figure 1. Severe wheat streak mosaic in a grower’s field in Jefferson County on June 1. (Photo by Stephen Wegulo)

Protect Future Wheat Yields: Control the Volunteer Green Bridge

August 2, 2017
Wheat streak mosaic virus (WSMV) problems have been extensive throughout the western Great Plains this year, significantly reducing the yield potential of many fields. A critical key in managing this threat in the next crop is elimination of volunteer wheat. Tillage or chemical weed control should occur at least one month before planting to allow host plants time to dry up and cease being a host.

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Wheat streak mosaic virus in wheat
Severe wheat streak mosaic virus in a wheat field in Deuel County on May 15, 2017. (Photo by Stephen Wegulo)

Why Control of Volunteer Wheat is Critical to Protecting 2018 Yields

July 13, 2017
Timely control of volunteer wheat and other weeds is key to managing yield loss risk in your 2018 crop. Yield-limiting risk factors affected by weed control include wheat streak mosaic and other diseases, insects (wheat stem sawfly and disease vectors), moisture loss, and increased weed seed production.

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