2008
DOI: 10.1590/s0100-83582008000200024
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Resistência ao glyphosate em biótipos de Conyza bonariensis e Conyza canadensis no Estado do Rio Grande do Sul, Brasil

Abstract: Experimentos de curva de dose-resposta foram conduzidos para avaliar a ocorrência de resistência ao glyphosate em biótipos de Conyza canadensis e Conyza bonariensis oriundos de municípios do Rio Grande do Sul. Para cada espécie foi realizado um experimento com dois biótipos um suscetível e outro com suspeita de resistência. Glyphosate nas doses de 0, 100, 200, 300, 400, 800 e 1.200 g ha-1 foi aplicado em plantas no estádio de 8-10 folhas. Curvas sigmoidais foram ajustadas para todos os biótipos testados. Confi… Show more

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Cited by 61 publications
(57 citation statements)
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“…The reality of the Brazilian agriculture shows it is not, otherwise the disturbance caused by herbicides would be enough to eliminate Conyza -but they became resistant. This is Nature always one Fortunately, most technical bibliography, as that by Constantin et al (2013) and several others (Vargas et al, 2007;Lamego & Vidal, 2008;Moreira et al, 2010;Silva et al, 2014;Pereira, 2015), do not face the problem of Conyza with simplicity and levity. It is a fact that the problem of Conyza in Brazil started in the 1980's, as evidenced in Table 1, when the no-till planting system was gaining importance; there is no evidence, however, which links the spread of no-till to the occurrence of Conyza.…”
Section: Table 1 -Random References Checked For Citations About Specimentioning
confidence: 96%
“…The reality of the Brazilian agriculture shows it is not, otherwise the disturbance caused by herbicides would be enough to eliminate Conyza -but they became resistant. This is Nature always one Fortunately, most technical bibliography, as that by Constantin et al (2013) and several others (Vargas et al, 2007;Lamego & Vidal, 2008;Moreira et al, 2010;Silva et al, 2014;Pereira, 2015), do not face the problem of Conyza with simplicity and levity. It is a fact that the problem of Conyza in Brazil started in the 1980's, as evidenced in Table 1, when the no-till planting system was gaining importance; there is no evidence, however, which links the spread of no-till to the occurrence of Conyza.…”
Section: Table 1 -Random References Checked For Citations About Specimentioning
confidence: 96%
“…Contudo, foram identificados biótipos resistentes ao glyphosate em pomares de citros (Christoffoleti et al, 2006;Montezuma et al, 2006;Moreira et al, 2006); o mesmo ocorre com ERIBO em áreas de soja transgênica (Vargas et al, 2006;Lamego & Vidal, 2007). A ocorrência de biótipos resistentes aos herbicidas indica a necessidade de técnicas de manejo integrado de plantas daninhas.…”
Section: Conyza Bonar Iensi S (L) (Eri Bo Buva) Eunclassified
“…A ampla utilização do glyphosate no mundo resultou na seleção de biótipos resistentes a esse herbicida em vários países, inclusive no Brasil, onde já existem relatos de Lolium multiflorum, Digitaria insularis, Conyza bonariensis e C. canadensis resistentes (Christoffoleti et al, 2006;Montezuma et al, 2006;Moreira et al, 2006;Vargas et al, 2006;Lamego & Vidal, 2008).…”
Section: Introductionunclassified