2014
DOI: 10.1590/s0100-83582014000200014
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Estádio de desenvolvimento e superfície foliar reduzem a eficiência de chlorimuron-ethyl e glyphosate em Conyza sumatrensis

Abstract: ) applied in isolation or associated at three developmental stages of four Conyza sumatrensis (2, 5, 17 and 20) biotypes (height = 0.5-1 cm and 3-4 leaves, height = 1-2 cm and 6-7 leaves, height = 10-12 cm, 12-14 leaves).

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Cited by 13 publications
(8 citation statements)
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References 14 publications
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“…The absence of intoxication in some plants may be justified by development stage, morphology, absorption, translocation, environmental conditions, application period and metabolism, which are important factors that may determine the selectivity of the herbicide on plants (Santos et al, 2014). The selectivity of some plants to clomazone may also be related to the action site of the cytochrome P-450 mono-oxygenase enzyme, which is involved in resistance metabolites of various herbicides (Yun et al, 2001).…”
Section: Resultsmentioning
confidence: 99%
“…The absence of intoxication in some plants may be justified by development stage, morphology, absorption, translocation, environmental conditions, application period and metabolism, which are important factors that may determine the selectivity of the herbicide on plants (Santos et al, 2014). The selectivity of some plants to clomazone may also be related to the action site of the cytochrome P-450 mono-oxygenase enzyme, which is involved in resistance metabolites of various herbicides (Yun et al, 2001).…”
Section: Resultsmentioning
confidence: 99%
“…For Procópio et al (2003), the high trichromatic density, cuticle thickness, lower stomatal density and presence of epicuticular wax, especially in the adaxial leaf surface, are considered leaf barriers to the penetration of herbicides in C. bonariensis. In this regard, Santos et al (2014) have indicated that the explanation for the lower sensitivity of the Conyza sumatrensis biotypes to chlorimuron-ethyl in vegetative stages above six leaves (> 10 cm) is the absorption reduction due to factors related to the leaf external anatomy, such as the presence of trichomes.…”
Section: Resultsmentioning
confidence: 99%
“…Para a realização do experimento, foram utilizados dois biótipos de Conyza sumatrensis resistentes ao herbicida glifosato e um biótipo suscetível ao mesmo herbicida, previamente identificado em trabalho publicado na literatura (Tabela 1) (Santos et al, 2014). No mês de abril de 2016 os biótipos foram semeados em casa de vegetação na Universidade de Passo Fundo, no município de Passo Fundo-RS em delineamento inteiramente casualizado, com quatro repetições.…”
Section: Methodsunclassified