Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and Insecticides
Genetically modified (GM) soybeans expressing Cry1A.105/Cry2Ab2/Cry1Ac (event MON 87701 × MON 89788 × MON 87751 × MON 87708) and Cry1Ac (event MON 87701 × MON 89788) from <i>Bacillus thuringiensis</i> Berliner (<i>Bt</i>) are valuable technologies for managing key lepidoptera...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/11/2864 |
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| author | Daniela N. Godoy Venicius E. Pretto Marlon A. G. Weschenfelder Poliana Graupe de Almeida Amanda de F. Wendt Ramon B. Palharini Alexandre C. Reis Renato J. Horikoshi Patrick M. Dourado Samuel Martinelli Graham P. Head Oderlei Bernardi |
| author_facet | Daniela N. Godoy Venicius E. Pretto Marlon A. G. Weschenfelder Poliana Graupe de Almeida Amanda de F. Wendt Ramon B. Palharini Alexandre C. Reis Renato J. Horikoshi Patrick M. Dourado Samuel Martinelli Graham P. Head Oderlei Bernardi |
| author_sort | Daniela N. Godoy |
| collection | DOAJ |
| description | Genetically modified (GM) soybeans expressing Cry1A.105/Cry2Ab2/Cry1Ac (event MON 87701 × MON 89788 × MON 87751 × MON 87708) and Cry1Ac (event MON 87701 × MON 89788) from <i>Bacillus thuringiensis</i> Berliner (<i>Bt</i>) are valuable technologies for managing key lepidopteran pests of soybean in South America, but do not provide stand-alone protection against <i>Spodoptera</i> species. Here, we evaluated the use of these <i>Bt</i> soybeans and their integration with insecticides for managing <i>Spodoptera</i> species. Cry1A.105/Cry2Ab2/Cry1Ac soybean provided reasonable levels of protection against <i>S. cosmioides</i>, <i>S. albula,</i> and <i>S. eridania</i>. However, <i>S. frugiperda</i> had higher survival on this <i>Bt</i> soybean, and Cry1Ac soybean showed low lethality against all species evaluated. <i>Spodoptera</i> larvae that survived on <i>Bt</i> and non-<i>Bt</i> soybean showed comparable susceptibility to flubendiamide and thiodicarb in diet-overlay bioassays. Regardless of soybean plant type, the field doses of flubendiamide and thiodicarb were effective in controlling surviving <i>Spodoptera</i> larvae. We conclude that Cry1A.105/Cry2Ab2/Cry1Ac soybean is effective in controlling <i>S. cosmioides</i> and <i>S. albula</i>, and also has reasonable control of <i>S. eridania</i>, but not <i>S. frugiperda</i>. Cry1Ac soybean provided poor control of all <i>Spodoptera</i> species. Nonetheless, <i>Spodoptera</i> larvae surviving on both <i>Bt</i> and non-<i>Bt</i> soybean were controlled by flubendiamide and thiodicarb. Thus, integrated control tactics would provide effective management of <i>Spodoptera</i> species in <i>Bt</i> soybean fields in South America. |
| first_indexed | 2024-03-09T18:32:14Z |
| format | Article |
| id | doaj.art-6a6011f49ffe4f818276e0d2e27d8050 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T18:32:14Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-6a6011f49ffe4f818276e0d2e27d80502023-11-24T07:26:48ZengMDPI AGAgronomy2073-43952022-11-011211286410.3390/agronomy12112864Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and InsecticidesDaniela N. Godoy0Venicius E. Pretto1Marlon A. G. Weschenfelder2Poliana Graupe de Almeida3Amanda de F. Wendt4Ramon B. Palharini5Alexandre C. Reis6Renato J. Horikoshi7Patrick M. Dourado8Samuel Martinelli9Graham P. Head10Oderlei Bernardi11Department of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilDepartment of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilDepartment of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilDepartment of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilDepartment of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilDepartment of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilDepartment of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilRegulatory Science, Bayer Crop Science, São Paulo 56194, BrazilRegulatory Science, Bayer Crop Science, São Paulo 56194, BrazilRegulatory Science, Bayer Crop Science, Chesterfield, MO 63005, USARegulatory Science, Bayer Crop Science, Chesterfield, MO 63005, USADepartment of Plant Protection, Federal University of Santa Maria (UFSM), Roraima Avenue 1000, Santa Maria 97105-900, BrazilGenetically modified (GM) soybeans expressing Cry1A.105/Cry2Ab2/Cry1Ac (event MON 87701 × MON 89788 × MON 87751 × MON 87708) and Cry1Ac (event MON 87701 × MON 89788) from <i>Bacillus thuringiensis</i> Berliner (<i>Bt</i>) are valuable technologies for managing key lepidopteran pests of soybean in South America, but do not provide stand-alone protection against <i>Spodoptera</i> species. Here, we evaluated the use of these <i>Bt</i> soybeans and their integration with insecticides for managing <i>Spodoptera</i> species. Cry1A.105/Cry2Ab2/Cry1Ac soybean provided reasonable levels of protection against <i>S. cosmioides</i>, <i>S. albula,</i> and <i>S. eridania</i>. However, <i>S. frugiperda</i> had higher survival on this <i>Bt</i> soybean, and Cry1Ac soybean showed low lethality against all species evaluated. <i>Spodoptera</i> larvae that survived on <i>Bt</i> and non-<i>Bt</i> soybean showed comparable susceptibility to flubendiamide and thiodicarb in diet-overlay bioassays. Regardless of soybean plant type, the field doses of flubendiamide and thiodicarb were effective in controlling surviving <i>Spodoptera</i> larvae. We conclude that Cry1A.105/Cry2Ab2/Cry1Ac soybean is effective in controlling <i>S. cosmioides</i> and <i>S. albula</i>, and also has reasonable control of <i>S. eridania</i>, but not <i>S. frugiperda</i>. Cry1Ac soybean provided poor control of all <i>Spodoptera</i> species. Nonetheless, <i>Spodoptera</i> larvae surviving on both <i>Bt</i> and non-<i>Bt</i> soybean were controlled by flubendiamide and thiodicarb. Thus, integrated control tactics would provide effective management of <i>Spodoptera</i> species in <i>Bt</i> soybean fields in South America.https://www.mdpi.com/2073-4395/12/11/2864integrated pest managementtransgenic soybeanchemical insecticidesdefoliator species |
| spellingShingle | Daniela N. Godoy Venicius E. Pretto Marlon A. G. Weschenfelder Poliana Graupe de Almeida Amanda de F. Wendt Ramon B. Palharini Alexandre C. Reis Renato J. Horikoshi Patrick M. Dourado Samuel Martinelli Graham P. Head Oderlei Bernardi Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and Insecticides Agronomy integrated pest management transgenic soybean chemical insecticides defoliator species |
| title | Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and Insecticides |
| title_full | Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and Insecticides |
| title_fullStr | Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and Insecticides |
| title_full_unstemmed | Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and Insecticides |
| title_short | Managing <em>Spodoptera</em> Species (Lepidoptera: Noctuidae) Found in Brazilian Soybean Fields with <em>Bt</em> Soybean and Insecticides |
| title_sort | managing em spodoptera em species lepidoptera noctuidae found in brazilian soybean fields with em bt em soybean and insecticides |
| topic | integrated pest management transgenic soybean chemical insecticides defoliator species |
| url | https://www.mdpi.com/2073-4395/12/11/2864 |
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