Eficácia de herbicidas inibidores da ACCase no controle de gramíneas em lavouras de soja

Barroso, Alberto Leão de Lemos; Dan, Hugo Almeida; Procópio, S.O.; Toledo, Roberto; Sandaniel, Carlos Roberto; Braz, Guilherme Braga Pereira; Cruvinel, K.L.

doi:10.1590/s0100-83582010000100018

Cited by 18 publications

(20 citation statements)

References 18 publications

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“…Confirming the findings, Barroso et al (2010) found that in application of ACCase inhibiting herbicides in E. indica plants, sethoxydim provided the worst performances of control. On the other hand, haloxyfop-methyl herbicide resulted in a control above 90%.…”

Section: Resultssupporting

confidence: 66%

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Influence of soil water potential in the action of herbicides on goosegrass (Eleusine indica (L) Gaertn)

Pereira¹,

Souza²,

Silva³

et al. 2015

Biosci. J.

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Currently, the use of herbicides is essential in a practical and common in agricultural areas, but efficiency of these herbicides can be compromised when applied on plants that thrive in water deficit conditions, due to low uptake and translocation of the product. Therefore, the aim of this study was to compare the efficiency of control ACCase inhibiting herbicides applied post-emergence in plants of Eleusine indica under different soil water contents. The experiment was conducted in a greenhouse and the experimental design was completely randomized design with four replications, consisting of a 9x4 factorial, with the combination of three soil water potentials (-0.03, -0.07 and -1.5 MPa) three herbicides (fluazifop-p -butyl, haloxyfop-methyl and sethoxydim + oil) and four doses (0, 25, 50, and 100 % of the recommended dose). Herbicide application was made in plants in vegetative stage 2-3 tillers. The soil water potential was initiated in the development stage of two leaves, and the water was supplemented until the soil reaches the potential of -0.01 MPa, when it came to minimum pre-determined for each water management. The physiological parameters evaluated were: photosynthetic rate, stomatal conductance, transpiration leaf temperature and plant dry mass. The visual assessments of phytotoxicity were performed at 7 and 14 days after application. The herbicides behaved in different ways according to the used water management. In severe water stress conditions (soil moisture at 8%) only fluazifop-p-butyl herbicide achieved satisfactory control (>90%) in E. indica plants.

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Section: Resultssupporting

confidence: 66%

“…According to Barroso et al (2010), in a study of Urochloa decumbens, Digitaria ciliaris, Eleusine indica, Urochloa plantaginea and Cenchrus echinatus grasses, applying ACCase inhibiting herbicides, haloxyfop-methyl showed greater action spectrum.…”

Section: Resultsmentioning

confidence: 99%

Influence of soil water potential in the action of herbicides on goosegrass (Eleusine indica (L) Gaertn)

Pereira¹,

Souza²,

Silva³

et al. 2015

Biosci. J.

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“…Tal resultado pode ser explicado pelo fato destes herbicidas serem empregados para o controle de plantas daninhas monocotiledôneas, sendo utilizados, portanto, de forma seletiva em culturas dicotiledôneas (Jasper et al, 2015). Segundo Barroso et al (2010), o mecanismo que inibe a ACCase, bloqueia a síntese de lipídeos apenas nas plantas susceptíveis, impossibilitando a formação da membrana celular e causando desestruturação dos tecidos em formação.…”

Section: Seletividade De Herbicidas Aplicados Em Pós-emergência Na Cuunclassified

Seletividade de herbicidas aplicados em pré e pós-emergência da cultura do cártamo

Castro¹,

Belapart²,

Carbonari³

et al. 2017

RBHerbicidas

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Resumo -O cultivo do cártamo tem aumentado nos últimos anos, principalmente para a produção de biodiesel. O controle de plantas daninhas a fim de evitar perdas na produtividade da cultura faz se necessário. Desta forma, uma alternativa que surge é o uso de herbicidas seletivos para a cultura. Objetivou-se verificar a seletividade de herbicidas em pré e pós-emergência para a cultura do cártamo. Foram conduzidos dois experimentos adotando-se delineamento em blocos casualizados com quatro repetições. Para o primeiro experimento com aplicações em pré-emergência os tratamentos foram arranjados em esquema fatorial 6 x 2 + 1, enquanto que para o segundo experimento, com as aplicações em pós-emergência os tratamentos foram dispostos em esquema fatorial 7 x 2 + 1. Em ambos experimentos, o fator A correspondeu aos diferentes herbicidas e o fator B às doses utilizadas, e o tratamento adicional consistiu de testemunha sem aplicação de herbicidas. Foram realizadas avaliações visuais de fitointoxicação nas plantas aos 7, 14 e 21 dias após a aplicação, altura de plantas, estande e produtividade. Os herbicidas chlorimuron-ethyl (20 e 40 g i.a. ha -1 ), flumioxazin (50 e 100 g i.a. ha -1 ), imazaquin (161 e 322 g i.a. ha -1 ), s-metolachlor (1440 e 24000 g i.a. ha -1 ) e sulfentrazone (300 g i.a. ha -1 ), aplicados em pré-emergência, e os herbicidas sethoxydim (184 g i.a. ha -1 ), fluazifop-p-butyl (375 e 750 g i.a. ha -1 ) haloxyfop-methyl (60 e 120 g i.a. ha -1 ) e clethodim (108 g i.a. ha -1 ), aplicados em pós-emergência foram seletivos para a cultura do cártamo. Palavras-chave: Carthamus tinctorius, controle químico, plantas daninhasAbstract -The cultivation of safflower has increased in recent years, mainly for the production of biodiesel. However, it is necessary to weed control in order to avoid losses in productivity. In this way, an alternative that comes up is the use of selective herbicides for culture. This study aimed to verify the selectivity of different herbicides in pre and post-emergence to the safflower crop. Two experiments were conducted adopting a randomized block design with four replicates. For the first experiment with pre-emergence applications the treatments were arranged in a 6 x 2 + 1 factorial scheme, whereas for the second experiment with the post-emergence applications the treatments were arranged in a factorial scheme 7 x 2 + 1. For both experiments, the factor A corresponded to the different herbicides and factor B at the doses used and the additional treatment consisted of control without application

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“…In addition, weed species respond differently to herbicides when isolated or in combination (BARROSO et al, 2010) and in different weed plant stages. The more advanced the stage is, higher will be the herbicide dose required for an efficient control (DORS et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Ryegrass control derived from isolated application with herbicides association

Rockenbach¹,

Schneider²,

Bianchi³

2015

Científica

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Eficácia de herbicidas inibidores da ACCase no controle de gramíneas em lavouras de soja

Cited by 18 publications

References 18 publications

Influence of soil water potential in the action of herbicides on goosegrass (Eleusine indica (L) Gaertn)

Influence of soil water potential in the action of herbicides on goosegrass (Eleusine indica (L) Gaertn)

Seletividade de herbicidas aplicados em pré e pós-emergência da cultura do cártamo

Ryegrass control derived from isolated application with herbicides association

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