Northwest and Allee Research and Demonstration Farms
Authors: Erin Hodgson (Iowa State University) , Ben Kolbe (Iowa State University)
Soybean gall midge, Resseliella maxima Gagne? (Diptera: Cecidomyiidae), has the potential to cause 100% yield loss in western Iowa, particularly along field edges. There are three, overlapping generations per season (each approximately 4-6 weeks in duration). Larvae feed inside the stems, making typical management using foliar insecticides, more challenging to use. The purpose of this trial was to compare three rates of a new insecticide, Plinazolin Technology, against two industry standards in soybean. Applications were targeted at the third-generation adults (overwintering population migrating to soybean) in June and July. Product efficacy was evaluated based on larval presence in the stem, percent of wilting plants, and yield.
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How to Cite: Hodgson, E. & Kolbe, B. (2023) “Soybean Gall Midge Efficacy Evaluation”, Iowa State University Research and Demonstration Farms Progress Reports. 2022(7).