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| 1. |  | KASPARY, T. E.; WALLER, M.E.; GARCIA, A.; CABRERA, M.; HILL, S.M. Conyza bonariensis' resistance to glyphosate, diclosulam, and chlorimuron: confirmation and alternative control for the first case of multiple and cross-resistance in Uruguay. Agronomy. 2024, Volume 14, Issue 1, Article 79. https://doi.org/10.3390/agronomy14010079 -- OPEN ACCESS. Article history: Submission received 15 November 2023; Revised 25 December 2023; Accepted 26 December 2023; Published: 28 December 2023. -- Correspondence: Kaspary, T.E.; National Agricultural Research Institute of Uruguay (INIA), La...| Biblioteca(s): INIA Las Brujas. |
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| Registros recuperados : 1 | |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
28/02/2024 |
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Actualizado : |
28/02/2024 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
KASPARY, T. E.; WALLER, M.E.; GARCIA, A.; CABRERA, M.; HILL, S.M. |
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Afiliación : |
TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MAURICIO EMANUEL WALLER BARCENA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MILTON ALEJANDRO GARCIA LATASA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ORLANDO MAURICIO CABRERA GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SOFÍA MARQUES HILL, Agricultural Biology Department, Colorado State University, 80011, CO, United States. |
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Título : |
Conyza bonariensis' resistance to glyphosate, diclosulam, and chlorimuron: confirmation and alternative control for the first case of multiple and cross-resistance in Uruguay. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Agronomy. 2024, Volume 14, Issue 1, Article 79. https://doi.org/10.3390/agronomy14010079 -- OPEN ACCESS. |
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ISSN : |
2073-4395 |
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DOI : |
10.3390/agronomy14010079 |
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Idioma : |
Inglés |
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Notas : |
Article history: Submission received 15 November 2023; Revised 25 December 2023; Accepted 26 December 2023; Published: 28 December 2023. -- Correspondence: Kaspary, T.E.; National Agricultural Research Institute of Uruguay (INIA), La Estanzuela, Colonia, Uruguay; email:tkaspary@inia.org.uy -- Academic Editor: Shouhui Wei. -- Funding: This research was funded by Fondo Vaz Ferreira (Ministerio de Educación y Cultura-Uruguay)-Project identification: FVF/2021/013 and the National Agricultural Research Institute of Uruguay-INIA. -- This article belongs to the Topic Weed Resistance to Herbicides: Assessing and Finding Solutions for a Complex Problem (https://www.mdpi.com/topics/weed_resistance ). -- Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). -- |
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Contenido : |
ABSTRACT.- Conyza bonariensis L. (hairy fleabane) is a significant weed in production systems, especially due to its evolving resistance to various herbicides. In Uruguay, control failures of C. bonariensis have been reported following the use of glyphosate and ALS inhibitors. The objective of this study was to investigate the occurrence of the multiple and cross-resistance of C. bonariensis to glyphosate, chlorimuron, and diclosulam, and to assess the efficacy of alternative herbicides against these resistant biotypes. Seeds were collected from sites where plants had survived herbicide applications during the 2019/2020 and 2020/2021 seasons. Following initial screenings, biotypes were selected to establish independent dose-response curves for glyphosate, diclosulam, and chlorimuron. For each herbicide, four biotypes of C. bonariensis were tested: one susceptible (S), two putatively moderately resistant (MR) biotypes, and one putatively highly resistant (R) biotype. In each assay, eight herbicide doses were used (1/32; 1/16; 1/8; 1/2; 1; 2; and 4X for S and MR biotypes, and 1/8; 1/2; 1; 2; 4; 8; and 16X for R biotypes) based on the recommended dose (1x) for each herbicide, with four repetitions per treatment. Each assay was completely replicated twice. Resistance was confirmed through testing in two plant generations (G1 and G2). The findings reveal high levels of multiple and cross-resistance in C. bonariensis to glyphosate, diclosulam, and chlorimuron. In general, herbicides with alternative action mechanisms effectively controlled C. bonariensis exhibiting multiple and cross-resistance. This study confirms the first case of C. bonariensis cross-resistance to diclosulam and chlorimuron, and the first occurrence of multiple and cross-resistance to glyphosate, diclosulam, and chlorimuron in this species. © 2023 by the authors. MenosABSTRACT.- Conyza bonariensis L. (hairy fleabane) is a significant weed in production systems, especially due to its evolving resistance to various herbicides. In Uruguay, control failures of C. bonariensis have been reported following the use of glyphosate and ALS inhibitors. The objective of this study was to investigate the occurrence of the multiple and cross-resistance of C. bonariensis to glyphosate, chlorimuron, and diclosulam, and to assess the efficacy of alternative herbicides against these resistant biotypes. Seeds were collected from sites where plants had survived herbicide applications during the 2019/2020 and 2020/2021 seasons. Following initial screenings, biotypes were selected to establish independent dose-response curves for glyphosate, diclosulam, and chlorimuron. For each herbicide, four biotypes of C. bonariensis were tested: one susceptible (S), two putatively moderately resistant (MR) biotypes, and one putatively highly resistant (R) biotype. In each assay, eight herbicide doses were used (1/32; 1/16; 1/8; 1/2; 1; 2; and 4X for S and MR biotypes, and 1/8; 1/2; 1; 2; 4; 8; and 16X for R biotypes) based on the recommended dose (1x) for each herbicide, with four repetitions per treatment. Each assay was completely replicated twice. Resistance was confirmed through testing in two plant generations (G1 and G2). The findings reveal high levels of multiple and cross-resistance in C. bonariensis to glyphosate, diclosulam, and chlorimuron. In general, herbicid... Presentar Todo |
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Palabras claves : |
ALS inhibitors; ÁREA DE PASTURAS Y FORRAJES - INIA; EPSPS inhibitor; Hairy fleabane; Herbicide resistance; South America; Weeds. |
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Asunto categoría : |
F01 Cultivo |
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URL : |
https://www.mdpi.com/2073-4395/14/1/79/pdf
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Marc : |
LEADER 03745naa a2200289 a 4500
001 1064480
005 2024-02-28
008 2024 bl uuuu u00u1 u #d
022 $a2073-4395
024 7 $a10.3390/agronomy14010079$2DOI
100 1 $aKASPARY, T. E.
245 $aConyza bonariensis' resistance to glyphosate, diclosulam, and chlorimuron$bconfirmation and alternative control for the first case of multiple and cross-resistance in Uruguay.$h[electronic resource]
260 $c2024
500 $aArticle history: Submission received 15 November 2023; Revised 25 December 2023; Accepted 26 December 2023; Published: 28 December 2023. -- Correspondence: Kaspary, T.E.; National Agricultural Research Institute of Uruguay (INIA), La Estanzuela, Colonia, Uruguay; email:tkaspary@inia.org.uy -- Academic Editor: Shouhui Wei. -- Funding: This research was funded by Fondo Vaz Ferreira (Ministerio de Educación y Cultura-Uruguay)-Project identification: FVF/2021/013 and the National Agricultural Research Institute of Uruguay-INIA. -- This article belongs to the Topic Weed Resistance to Herbicides: Assessing and Finding Solutions for a Complex Problem (https://www.mdpi.com/topics/weed_resistance ). -- Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). --
520 $aABSTRACT.- Conyza bonariensis L. (hairy fleabane) is a significant weed in production systems, especially due to its evolving resistance to various herbicides. In Uruguay, control failures of C. bonariensis have been reported following the use of glyphosate and ALS inhibitors. The objective of this study was to investigate the occurrence of the multiple and cross-resistance of C. bonariensis to glyphosate, chlorimuron, and diclosulam, and to assess the efficacy of alternative herbicides against these resistant biotypes. Seeds were collected from sites where plants had survived herbicide applications during the 2019/2020 and 2020/2021 seasons. Following initial screenings, biotypes were selected to establish independent dose-response curves for glyphosate, diclosulam, and chlorimuron. For each herbicide, four biotypes of C. bonariensis were tested: one susceptible (S), two putatively moderately resistant (MR) biotypes, and one putatively highly resistant (R) biotype. In each assay, eight herbicide doses were used (1/32; 1/16; 1/8; 1/2; 1; 2; and 4X for S and MR biotypes, and 1/8; 1/2; 1; 2; 4; 8; and 16X for R biotypes) based on the recommended dose (1x) for each herbicide, with four repetitions per treatment. Each assay was completely replicated twice. Resistance was confirmed through testing in two plant generations (G1 and G2). The findings reveal high levels of multiple and cross-resistance in C. bonariensis to glyphosate, diclosulam, and chlorimuron. In general, herbicides with alternative action mechanisms effectively controlled C. bonariensis exhibiting multiple and cross-resistance. This study confirms the first case of C. bonariensis cross-resistance to diclosulam and chlorimuron, and the first occurrence of multiple and cross-resistance to glyphosate, diclosulam, and chlorimuron in this species. © 2023 by the authors.
653 $aALS inhibitors
653 $aÁREA DE PASTURAS Y FORRAJES - INIA
653 $aEPSPS inhibitor
653 $aHairy fleabane
653 $aHerbicide resistance
653 $aSouth America
653 $aWeeds
700 1 $aWALLER, M.E.
700 1 $aGARCIA, A.
700 1 $aCABRERA, M.
700 1 $aHILL, S.M.
773 $tAgronomy. 2024, Volume 14, Issue 1, Article 79. https://doi.org/10.3390/agronomy14010079 -- OPEN ACCESS.
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