Perception and Use of Economic Thresholds Among Farmers and Agricultural Professionals: A Case Study on Soybean Aphid in Minnesota

Abstract Economic thresholds (ETs) are a foundational principle of integrated pest management but not always widely accepted by farmers and agricultural professionals. This article reports on survey Minnesota farmer professional perceptions the ET for soybean aphid, Aphis glycines Matsumura (Hempitera: Aphididae). We discuss insights Extension programs how to frame importance teach stakeholders use them effectively. Key takeaways include professionals often worry about combined effects insect, disease, physiological pressures, whereas interactions with these other stressors seldom discussed in educational outreach. Across groups, there is fundamental misunderstanding difference between ETs economic injury level. Many participants reported believing lacked time capacity fully implement it. Sales agronomists were least likely groups trust university-determined aphid ET, commercial pesticide applicators independent consultants most Based results, we recommend adapting communication based target audience address common misconceptions barriers that unique each group.