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ViewAttendees 6

10-Minute Paper

Plant-Insect Ecosystems

P-IE: IPM - Field Crops 2

Four years of soybean gall midge adult emergence: What we know and don’t know

Sunday, November 5, 2023
9:24 AM – 9:36 AM ET
Location: Gaylord National Resort & Convention Center, National Harbor 7
In-Person
The soybean gall midge (SGM) Resseliella maxima Gagné (Diptera: Cecidomyiidae) was identified as a new pest species of soybean in 2018 after entomologists in Nebraska, Iowa, and South Dakota received reports of soybean fields with visible signs of dying or wilting plants associated with an infestation of larvae at the base of the stem. A survey conducted on 83 clientele in Nebraska indicated an average of 17-31% yield loss in 2018 and approximately 18% yield loss in 2019. Infestations in new counties have been confirmed each year, indicating a continued expansion of the detectable distribution of this pest. The widespread injury caused by soybean gall midge over the last five years in Nebraska, Iowa, South Dakota, and Minnesota, and its presence in Missouri have raised significant concerns by farmers. Since its discovery, adult emergence of soybean gall midge has been tracked using corn rootworm emergence cages from last year's and the current year's soybean fields, providing a season-long view of adult emergence. Results on adult emergence have been highly variable, raising concerns about the biology and ecology of this new pest. This presentation will highlight the results of that multi-state work and some additional studies that provide insight into the challenges with monitoring soybean gall midge adults.