By Scout Nelson
Soybean gall midge adults have been spotted in east-central Nebraska, signaling the start of the 2025 emergence period. The first detections were made on May 30 and June 4 in Saunders County, alerting farmers to potential soybean damage.
Soybean gall midge adults lay eggs in cracks at the base of young soybean plants. These cracks usually begin to form at the V2 growth stage, making plants susceptible to infestation. Soybeans planted in late April and early May have mostly reached this stage, while those planted later are still too young and not at risk yet.
Growers with past issues from soybean gall midge can consider applying foliar insecticides, especially along the first 60 to 120 feet of field edges that were damaged the previous year. Research has shown that pyrethroid-based products may offer some protection, although the results have varied.
A second method showing promise is hilling, which involves covering the base of the stem with soil. This method has resulted in almost complete pest control in some studies. However, this can be challenging to apply when the plants are small, as they might be buried in the soil.
Spraying before the V2 stage is not recommended, as plants are not yet vulnerable. More information about hilling and pest behavior is available at soybeangallmidge.org.
The Soybean Gall Midge Alert Network continues to provide timely emergence updates. Producers can sign up on the website to receive alerts by text or email to help plan effective pest control strategies.
Photo Credit:gettyimages-gilaxia
Categories: Nebraska, Crops, Soybeans