Justin McMechan
faculty
Work
1071 County Rd G
Ithaca
NE
68033-2234
US
Work
402-624-8041
On campus, dial 7-8041
Introduction to CropWatch Readers
Crop Infographics
Previous CW Contributions:
Grasshoppers Return ― It’s Time to Scout Field Borders
July 18, 2019
Populations of immature grasshoppers are being reported in areas bordering crop fields in several parts of Nebraska. If these grasshopper species 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.
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.
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.
Soybean Gall Midge Larvae Found in Soybean Plants
June 29, 2019
In Nebraska, soybean gall midge larval injury to soybean has been found in most areas where adult soybean gall midge activity occurred over the past two weeks It is unlikely foliar insecticides will affect this insect.
Soybean Gall Midge: Management Window Changing for Nebraska Growers
June 26, 2019
Soybean gall midge larvae found feeding within soybean plants in east central Nebraska mean foliar applications will likely no longer be effective. In northeast Nebraska, however, they may still be effective for a short time.
Using Degree-Day Models to Predict Western Bean Cutworm Flights
June 21, 2019
With late planting, slow emergence, and cooler summer temperatures affecting corn development, will corn be spared from western bean cutworm damage in 2019. Unfortunately, models indicate WBC growth is also delayed. See a table of predicted dates for 2019 WBC flights in Nebraska and surrounding states.
Soybean Gall Midge Emergence Update in Nebraska
June 21, 2019
Soybean gall midge numbers continue to increase at a number of monitoring sites in the state.