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Poster Display
Plant-Insect Ecosystems
Gourav Beniwal
Graduate Student
Oklahoma State University
Stillwater, Oklahoma
Nikolai Thielepape
Department of Entomology and Plant Pathology, Oklahoma State University
Stillwater, Oklahoma
Ryan Dehart
Department of Entomology and Plant Pathology, Oklahoma State University
Stillwater, Oklahoma
Maxwell Smith
Department of Entomology and Plant Pathology, Oklahoma State University
Stillwater, Oklahoma
Maira Rodrigues Duffeck
Department of Entomology and Plant Pathology, Oklahoma State University
Stillwater, Oklahoma
Josh Lofton
Department of Plant and Soil Sciences, Oklahoma State University
Stillwater, Oklahoma
Jenny Dudak
Department of Plant and Soil Sciences, Oklahoma State University
Stillwater, Oklahoma
Isaac Esquivel
University of Florida
Quincy, Florida
Ashleigh Faris
Assistant Professor
Oklahoma State University
Stillwater, Oklahoma
Stink bugs (Hemiptera: Pentatomidae) are economically damaging pests of commodity crops such as soybean (Glycine max) and upland cotton (Gossypium hirsutum). Stink bugs can feed on all parts of the plant but cause the most damage to fruiting structures such as pods and bolls. These insects are difficult to scout due to their patchy distribution, aggregating behavior, and blending into the crop canopy. Over the past decade, there have been increased observations of the green stink bug, Chinavia hilaris (Say), persisting for several weeks in Oklahoma soybean and cotton acres at sub-threshold levels, leading to concern of current economic thresholds being too conservative due to evidence of stink bug related economic losses. Current thresholds for Oklahoma are based on former cultivars with lower yields and out of state production regions not representative of Oklahoma environment and agronomic practices. This study assesses the current Oklahoma thresholds for stink bugs, specifically for full-season and double-crop soybean, as well as in dryland and irrigated ThryvOn and non-ThryvOn cotton. Trials were planted and replicated during the 2025 growing season. Thresholds were evaluated by treating respective plots with a pyrethroid at 0.5X, 1X, and 1.5 or 2X the current thresholds, documenting stink bug pressure and yield. Insect activity across the growing season was also documented. Results from this study will provide insight on the utility and relevancy of these action thresholds in the context of modern production acres and practices in Oklahoma.