Soybean Gall Midge Emergence in Saunders County, Nebraska.
Date: May 30th, 2025
On May 30th, two soybean gall midge adults were collected from a field in east-central Nebraska in Saunders County. Soybean stage is a critical factor for the susceptibility of soybean to soybean gall midge. Only soybean with fissures at the base of the plant are susceptible to soybean gall midge infestation. Soybean planted in late April and early May are mostly at the V2 stage; however, those planted in mid to late May are VE-V1.
Soybean Gall Midge: Should I Spray Checklist
β Soybean gall midge adults have emerged in my area
β My soybean field is at the V2 stage or greater (Fig. 2)
β I observed soybean gall midge injury in the adjacent field last year
Management of soybean gall midge has been difficult. Foliar sprays have shown some response but are inconsistent between locations and years. No specific foliar-applied product tested to date has provided consistent control of SGM. Research to date suggests that growers can consider using a combination product that contains a pyrethroid. If an application is being considered, it should only be made in soybean fields where a history of issues with soybean gall midge injury has occurred. Since soybean gall midge is a field edge-infesting pest, growers may only need to treat the first 60 to 120 feet of a field edge that is directly adjacent to a field that was injured the previous year. Do not treat any soybean fields prior to V2, as they are not susceptible to infestation due to the lack of fissures or cracks at the base of the stem.
With no detection of soybean gall midge in other parts of the network, it would be advisable to wait for emergence to occur in those areas.
Thank you to the USDA NIFA, North Central Soybean Research Program, Nebraska Soybean Board, Minnesota Rapid Response Agricultural Fund, Minnesota Soybean Research and Promotion Council, and our Industry Partners for funding soybean gall midge research.
Wilting and dead plants from soybean gall midge feeding in Lancaster County, NE. Photo taken on July 19th, 2024. Credit: Justin McMechan
Grower Survey of Soybean Gall Midge and Dectes Stem Borer
Dr. Doug Golick from the University of Nebraska is conducting a survey on the opinion of soybean producers on emerging pests. As a subscriber of the soybean gall midge alert network website, I would like to inform you that a link to this survey is available for you to provide your opinions on emerging soybean pests in Nebraska. Participation in this survey will take about 15 minutes to complete. If you are interested in participating in this study, follow the link to the survey here:
https://go.unl.edu/soybeanpestsurvey2024
There are no known risks involved in this research. If you have any questions regarding this research, please let me know. You can reach Doug at dgolick2@unl.edu. For questions concerning your rights or concerns about the research, please contact the UNL Institutional Review Board (IRB) at 402-472-6965 or irb@unl.edu.
Sites for Adult Emergence Monitoring Coming Soon!
-
No Emergence Reported Yet
-
Sites for Adult Emergence Monitoring Coming Soon! - No Emergence Reported Yet -
Letβs get some hail π§π§οΈ! This week we simulated hail in R1 soybeans to evaluate the impact of hail damage in Soybean Gall Midge infestation and abundance. I am excited to see the results! Video: @justinmcmechan #soybean #soybeangallmidge #entomology pic.twitter.com/akRFs5pRxE
— Natasha Umezu (@NatashaUmezu) June 24, 2023
White larvae found on soybean plants near Mead, NE on June 14th, 2023.
Photo taken by Justin McMechan.
Unmanned aerial vehicle photo of soybean gall midge injured field in Cass County, NE taken on August 26th, 2020.
Photo courtesy of Nick Tinsley (Bayer Crop Science)
White and orange larvae found on soybean near Mead, NE on June 19th, 2023