Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field Trials
In soybean fields across Northeast China, <i>Thrips flavus</i> Schrank (Thysanoptera, Thripidae) populations are increasing, posing a significant threat to soybean production. The aim of this study was to evaluate the toxicity, insecticide efficacy, and field performance of thirty insect...
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2025-04-01
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| author | Tianhao Pei Long Wang Yijin Zhao Shusen Shi Yu Gao |
| author_facet | Tianhao Pei Long Wang Yijin Zhao Shusen Shi Yu Gao |
| author_sort | Tianhao Pei |
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| description | In soybean fields across Northeast China, <i>Thrips flavus</i> Schrank (Thysanoptera, Thripidae) populations are increasing, posing a significant threat to soybean production. The aim of this study was to evaluate the toxicity, insecticide efficacy, and field performance of thirty insecticides against <i>T. flavus</i>. Laboratory bioassays revealed that fenthion (LC<sub>50</sub> = 2.26 mg/L), sulfoxaflor (LC<sub>50</sub> = 4.28 mg/L), cyetpyrafen (LC<sub>50</sub> = 4.94 mg/L), and imidacloprid (LC<sub>50</sub> = 6.16 mg/L) exhibited the highest toxicity against <i>T. flavus</i>. Pot experiments were subsequently conducted to assess insecticide efficacy. Seven days after application at the highest tested concentration, the insecticide efficacy of fenthion, sulfoxaflor, chlorantraniliprole, bifenazate, and malathion achieved 100% control efficacy. The four insecticides were selected for field trials based on their high toxicity and insecticide efficacy. Seven days after application, the field efficacy of fenthion at 11.25 g a.i.·hm<sup>−2</sup>, sulfoxaflor at 1.19 g a.i.·hm<sup>−2</sup>, cyetpyrafen at 8.10 g a.i.·hm<sup>−2</sup>, and imidacloprid at 11.25 g a.i.·hm<sup>−2</sup> exceeded 80%. Thus, these four insecticides hold strong potential for integrated management of <i>T. flavus</i>. Overall, the findings provide a valuable reference for developing chemical control strategies against this pest. |
| format | Article |
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| institution | DOAJ |
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| language | English |
| publishDate | 2025-04-01 |
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| series | Insects |
| spelling | doaj-art-2faf10d043de4ac8adbbca41bbe2fafc2025-08-20T03:13:49ZengMDPI AGInsects2075-44502025-04-0116440510.3390/insects16040405Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field TrialsTianhao Pei0Long Wang1Yijin Zhao2Shusen Shi3Yu Gao4College of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaIn soybean fields across Northeast China, <i>Thrips flavus</i> Schrank (Thysanoptera, Thripidae) populations are increasing, posing a significant threat to soybean production. The aim of this study was to evaluate the toxicity, insecticide efficacy, and field performance of thirty insecticides against <i>T. flavus</i>. Laboratory bioassays revealed that fenthion (LC<sub>50</sub> = 2.26 mg/L), sulfoxaflor (LC<sub>50</sub> = 4.28 mg/L), cyetpyrafen (LC<sub>50</sub> = 4.94 mg/L), and imidacloprid (LC<sub>50</sub> = 6.16 mg/L) exhibited the highest toxicity against <i>T. flavus</i>. Pot experiments were subsequently conducted to assess insecticide efficacy. Seven days after application at the highest tested concentration, the insecticide efficacy of fenthion, sulfoxaflor, chlorantraniliprole, bifenazate, and malathion achieved 100% control efficacy. The four insecticides were selected for field trials based on their high toxicity and insecticide efficacy. Seven days after application, the field efficacy of fenthion at 11.25 g a.i.·hm<sup>−2</sup>, sulfoxaflor at 1.19 g a.i.·hm<sup>−2</sup>, cyetpyrafen at 8.10 g a.i.·hm<sup>−2</sup>, and imidacloprid at 11.25 g a.i.·hm<sup>−2</sup> exceeded 80%. Thus, these four insecticides hold strong potential for integrated management of <i>T. flavus</i>. Overall, the findings provide a valuable reference for developing chemical control strategies against this pest.https://www.mdpi.com/2075-4450/16/4/405insecticidetoxicitythripssoybean pestchemical control |
| spellingShingle | Tianhao Pei Long Wang Yijin Zhao Shusen Shi Yu Gao Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field Trials Insects insecticide toxicity thrips soybean pest chemical control |
| title | Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field Trials |
| title_full | Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field Trials |
| title_fullStr | Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field Trials |
| title_full_unstemmed | Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field Trials |
| title_short | Toxicity and Efficacy of Thirty Insecticides Against <i>Thrips flavus</i> in Northeast China: Laboratory, Semifield, and Field Trials |
| title_sort | toxicity and efficacy of thirty insecticides against i thrips flavus i in northeast china laboratory semifield and field trials |
| topic | insecticide toxicity thrips soybean pest chemical control |
| url | https://www.mdpi.com/2075-4450/16/4/405 |
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