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. Área de Difusión Científica 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-R10article-25404
record_format ojs
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. Área de Difusión Científica
publishDate 2020
url https://revistas.unc.edu.ar/index.php/agris/article/view/25404
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