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17 August 2016 Potential for Sulfoxaflor to Improve Conservation Biological Control of Aphis glycines (Hemiptera: Aphididae) in Soybean
Anh K. Tran, Tavvs M. Alves, Robert L. Koch
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Abstract

Soybean aphid, Aphis glycines Matsumura, is one of the most important insect pests of soybean in the north central United States. Management of A. glycines currently relies on applications of broad-spectrum insecticides. However, broad-spectrum insecticides can negatively impact the natural enemies associated with aphids. Selective insecticides, on the other hand, are promising control tactics for reducing the negative impact of insecticide applications. Here, we compared the effects of sulfoxaflor (a new selective insecticide) and broad-spectrum insecticides on A. glycines and predators in a two-year field experiment. We sampled A. glycines and aphid predator populations using visual whole-plant inspection. In addition, sweep-net sampling was performed to monitor predator populations. To evaluate the toxicity of the insecticides on predator populations, laboratory bioassays were performed on Hippodamia convergens Guérin-Méneville, Orius insidiosus (Say), and Chrysoperla rufilabris (Burmeister). Field results showed that sulfoxaflor was as effective as the broad-spectrum insecticide in suppressing soybean aphid populations and was less impactful on predator populations. The laboratory bioassays showed that sulfoxaflor was moderately harmful to O. insidiosus, harmless to slightly harmful to H. convergens, and harmless to C. rufilabris. These studies suggest that sulfoxaflor holds promise for improving integration of chemical and biological controls for A. glycines management.

© The Authors 2016. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com
Anh K. Tran, Tavvs M. Alves, and Robert L. Koch "Potential for Sulfoxaflor to Improve Conservation Biological Control of Aphis glycines (Hemiptera: Aphididae) in Soybean," Journal of Economic Entomology 109(5), 2105-2114, (17 August 2016). https://doi.org/10.1093/jee/tow168
Received: 17 March 2016; Accepted: 30 June 2016; Published: 17 August 2016
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KEYWORDS
integrated pest management
natural enemy
selective insecticide
soybean aphid
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