Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages.

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Conyza sumatrensis is one of the most problematic weeds in Argentina, withfrequent control failures after glyphosate application. The objective of this research was to evaluate sensitivity of C. sumatrensis biotypes, at two growth stages (rosette and vegetative), to glyphosate and acetolactate synth...

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Autores principales: Balassone, Federico, Puricelli, Eduardo, Faccini, Delma
Formato: Artículo revista
Lenguaje:Español
Publicado: Facultad de Ciencias Agropecuarias. 2020
Materias:
resistance
dose-response
EPSPS Inhibitor
Sumatran fleabane
resistencia
dosis-respuesta
Inhibidor de la EPSPS
rama negra
Acceso en línea:https://revistas.unc.edu.ar/index.php/agris/article/view/25404
Aporte de:
Revistas de la UNC de Universidad Nacional de Córdoba
id I10-R10-article-25404
record_format ojs
spelling I10-R10-article-254042023-04-13T14:07:56Z Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages. Sensibilidad de biotipos de Conyza sumatrensis a glifosato y a inhibidores de ALS en dos estados de desarrollo Balassone, Federico Puricelli, Eduardo Faccini, Delma resistance dose-response EPSPS Inhibitor Sumatran fleabane resistencia dosis-respuesta Inhibidor de la EPSPS rama negra Conyza sumatrensis is one of the most problematic weeds in Argentina, withfrequent control failures after glyphosate application. The objective of this research was to evaluate sensitivity of C. sumatrensis biotypes, at two growth stages (rosette and vegetative), to glyphosate and acetolactate synthase(ALS)-inhibiting herbicides. Dose-response experiments were performed using 0, 1/16, 1/8, 1/4, 1/2, 1, 2, 4, 8, and 16-fold of the recommended dose for each herbicide. At rosette stage, the resistance level for glyphosate was 9.8, while at the vegetative stage neither biotype was controlled with the recommended dose, with lower sensitivity of biotype R (RI = 2.3). Control of both biotypes using ALS-inhibiting herbicides was excellent at rosette stage, with lower doses than the recommended. At vegetative stage controls were good (80 %) with lowerdoses than recommended (0.16 X to 0.97 X), except for metsulfuron-methyl +chlorsulfuron in biotype S (1.75 X). These results may confirm the existence of abiotype resistant to glyphosate in Argentina and that ALS-inhibiting herbicides could control resistant biotypes and more developed individuals. Conyza sumatrensis es una de las malezas más problemáticas de Argentina, con frecuentes fallas de control después de la aplicación de glifosato. El objetivo del trabajo fue evaluar la sensibilidad de biotipos de C. sumatrensis, en dos estados de desarrollo (roseta y vegetativo), a glifosato y a inhibidores de la enzima acetolactato sintasa (ALS). Se realizaron estudios de dosis-respuesta utilizando 0, 1/16, 1/8, 1/4, 1/2, 1, 2, 4, 8 y 16 veces la dosis recomendada para cada herbicida. Al estado de roseta el nivel de resistencia para glifosato fue de 9,8, mientras que en estado vegetativo ninguno de los biotipos fue controlado con la dosis recomendada, siendo menor la sensibilidad del biotipo R (IR = 2,3). El control de ambos biotipos con inhibidores de la ALS fue excelente al estado de roseta, con dosis menores que las recomendadas. Al estado vegetativo los controles fueron adecuados (80 %) con dosis menores que las recomendadas(0,16 X a 0,97 X), excepto para metsulfuron-metil + clorsulfuron en el biotipo S (1,75 X). Estos resultados confirmarían la existencia de un biotipo resistente a glifosato en Argentina y que los herbicidas inhibidores de la ALS pueden controlar biotipos resistentes e individuos más desarrollados. Facultad de Ciencias Agropecuarias. 2020-12-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/25404 AgriScientia; Vol. 37 No. 2 (2020); 11-20 AgriScientia; Vol. 37 Núm. 2 (2020); 11-20 1668-298X 10.31047/1668.298x.v37.n2 spa https://revistas.unc.edu.ar/index.php/agris/article/view/25404/41042 https://revistas.unc.edu.ar/index.php/agris/article/view/25404/32702 Derechos de autor 2020 Federico Balassone, Eduardo Puricelli, Delma Faccini https://creativecommons.org/licenses/by-sa/4.0
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-10
container_title_str Revistas de la UNC
language Español
format Artículo revista
topic resistance
dose-response
EPSPS Inhibitor
Sumatran fleabane
resistencia
dosis-respuesta
Inhibidor de la EPSPS
rama negra
spellingShingle resistance
dose-response
EPSPS Inhibitor
Sumatran fleabane
resistencia
dosis-respuesta
Inhibidor de la EPSPS
rama negra
Balassone, Federico
Puricelli, Eduardo
Faccini, Delma
Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages.
topic_facet resistance
dose-response
EPSPS Inhibitor
Sumatran fleabane
resistencia
dosis-respuesta
Inhibidor de la EPSPS
rama negra
author Balassone, Federico
Puricelli, Eduardo
Faccini, Delma
author_facet Balassone, Federico
Puricelli, Eduardo
Faccini, Delma
author_sort Balassone, Federico
title Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages.
title_short Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages.
title_full Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages.
title_fullStr Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages.
title_full_unstemmed Sensitivity of Conyza sumatrensis biotypes to glyphosate and ALS-inhibiting herbicides at two growth stages.
title_sort sensitivity of conyza sumatrensis biotypes to glyphosate and als-inhibiting herbicides at two growth stages.
description Conyza sumatrensis is one of the most problematic weeds in Argentina, withfrequent control failures after glyphosate application. The objective of this research was to evaluate sensitivity of C. sumatrensis biotypes, at two growth stages (rosette and vegetative), to glyphosate and acetolactate synthase(ALS)-inhibiting herbicides. Dose-response experiments were performed using 0, 1/16, 1/8, 1/4, 1/2, 1, 2, 4, 8, and 16-fold of the recommended dose for each herbicide. At rosette stage, the resistance level for glyphosate was 9.8, while at the vegetative stage neither biotype was controlled with the recommended dose, with lower sensitivity of biotype R (RI = 2.3). Control of both biotypes using ALS-inhibiting herbicides was excellent at rosette stage, with lower doses than the recommended. At vegetative stage controls were good (80 %) with lowerdoses than recommended (0.16 X to 0.97 X), except for metsulfuron-methyl +chlorsulfuron in biotype S (1.75 X). These results may confirm the existence of abiotype resistant to glyphosate in Argentina and that ALS-inhibiting herbicides could control resistant biotypes and more developed individuals.
publisher Facultad de Ciencias Agropecuarias.
publishDate 2020
url https://revistas.unc.edu.ar/index.php/agris/article/view/25404
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AT puricellieduardo sensitivityofconyzasumatrensisbiotypestoglyphosateandalsinhibitingherbicidesattwogrowthstages
AT faccinidelma sensitivityofconyzasumatrensisbiotypestoglyphosateandalsinhibitingherbicidesattwogrowthstages
AT balassonefederico sensibilidaddebiotiposdeconyzasumatrensisaglifosatoyainhibidoresdealsendosestadosdedesarrollo
AT puricellieduardo sensibilidaddebiotiposdeconyzasumatrensisaglifosatoyainhibidoresdealsendosestadosdedesarrollo
AT faccinidelma sensibilidaddebiotiposdeconyzasumatrensisaglifosatoyainhibidoresdealsendosestadosdedesarrollo
first_indexed 2022-08-20T01:01:42Z
last_indexed 2023-04-25T11:56:12Z
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