Justin McMechan
faculty
- Asst Professor Entomology University of Nebraska–Lincoln
Work
402-472-2312
On campus, dial 2-2312
Introduction to CropWatch Readers
Crop Infographics
Previous CW Contributions:
Mid-Season Update on Soybean Gall Midge
August 7, 2019
Soybean gall midge infestations have been confirmed in six new Nebraska counties since 2018.Treatment is not recommended at this time, but scouting and reporting infestations will continue to be important to plan for management next year.
Extension Crop and Pest Reports (July 29 - Aug. 2)
August 1, 2019
Crop reports from Extension Educators and specialists from across the state, including videos and Tweets.
Grasshoppers Return ― It’s Time to Scout Field Borders
June 27, 2023
If the grasshopper species currently invading field borders are one of the four major species that are likely to infest cropland, control may be warranted if high numbers are present.
Soybean Gall Midge Adults Emerge from this Year’s Soybean Fields
July 17, 2019
A significant number of soybean gall midge adults have been collected from this year’s soybean fields in east-central and northeast Nebraska. Dead and dying plants have been observed near infested sites in both northeast and east central Nebraska.
Why It's So Important to Control Volunteer Wheat and Weeds in Wheat Stubble After Harvest
June 22, 2023
Volunteer wheat can provide the summer "green bridge" for the disease wheat streak mosaic and other virus diseases, as well as soil water loss that could translate into a substantial decrease in yields the following year.
Painted Lady Butterflies Are Abundant In Many Areas—What Now?
July 10, 2019
Treatment is not recommended for the painted lady butterfly currently being seen in high numbers and could endanger beneficial insects. Treatment thresholds offer guidance for treating feeding caterpillars.
Western Corn Rootworm Beetles Emerging, Time to Scout
July 7, 2020
Western corn rootworm beetles began emerging in southeast and south central Nebraska at the end of June. Beetles emerge somewhat later in northeastern and western Nebraska.
Soybean Gall Midge: New Counties Infested and Second Generation Adults Emerging
July 8, 2019
Since June 30, low levels of adult emergence have been observed from east-central and northeast Nebraska counties from last year’s soybean fields. On July 2 and July 4 adults were found emerging from this year's soybeans in east-central Nebraska.