Efficacy of Foliar Insecticides for Management of Soybean Aphid, 2019

Aita, Rafael Carlesso; Ribeiro, Aristides; Koch, Robert L.

doi:10.1093/amt/tsz089

Cited by 1 publication

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“…However, on 18 August 2021, the US Environmental Protection Agency released their Final Tolerance Rule for chlorpyrifos revoking all tolerances for the insecticide on food products nationwide, 47 further limiting the products available for the control of soybean aphid. Although some newer, more selective insecticides, such as sulfoxaflor (group 4C), flupyradifurone (group 4D), and afidopyropen (group 9D) are labeled for and effective against soybean aphid, 48–51 caution should be taken to preserve their efficacy through the use of insecticide resistance management tactics. Regular efficacy monitoring of these alternative chemistries, both in the laboratory and in the field, is necessary to quantify of the onset and magnitude of practical resistance, and to avoid a similar fate as that of the pyrethroids for soybean aphid.…”

Section: Discussionmentioning

confidence: 99%

Change‐point analysis of lambda‐cyhalothrin efficacy against soybean aphid (Aphis glycines Matsumura): identifying practical resistance from field efficacy trials

Menger

Ribeiro

Potter

et al. 2022

Pest Management Science

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Background Soybean aphid (Aphis glycines Matsumura) remains the most economically important arthropod pest of soybean in the Upper Midwest Region of the USA. Soybean aphid resistance to the pyrethroid insecticides emerged in 2015; however, the reduction in the efficacy of field applications of pyrethroid insecticides has not been quantified. Based on time‐series data from insecticide efficacy trials at two locations, a novel approach of continuous two‐phase change point‐regression models was used to indicate whether a change in percent control had occurred, and to provide an indication of when and to what degree the percent control had changed. Results At both locations examined in this study, a significant change point for percent control of λ‐cyhalothrin was detected in 2014, thus marking the onset of practical resistance in the soybean aphid. Percent control decreased at a rate of 4.30% and 19.90% per year at these locations. By contrast, percent control for chlorpyrifos remained high over time with no significant change point. Conclusion This research demonstrates that retrospective time‐series analysis of insecticide efficacy data can identify the onset and magnitude of practical resistance in the field. This further validates and compliments the other lines of evidence related to pyrethroid resistance in soybean aphid. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 99%