Controle Em Pós-Emergência De Plantas Daninhas Por Herbicidas Utilizados Na Cultura Da Cana-De-Açúcar

Silva, Paulo Vinícius da; Monquero, Patrícia Andréa; Munhoz, William Sanches

doi:10.1590/1983-21252015v28n403rc

Cited by 10 publications

(10 citation statements)

References 10 publications

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“…These results agree with those obtained by Silva et al (2015) in sugarcane straw for the herbicides sulfentrazone (800 g a.i ha ) as well as their combinations at different doses for the control of morning glory species. According to the authors, M. aegyptia was efficiently controlled with the herbicides amicarbazone (99.99%) and sulfentrazone (88.00%) but less efficiently controlled with hexazinone (75%).…”

Section: Experiments 1: Susceptibility Of Different Morning Glory Specsupporting

confidence: 91%

Differential susceptibility of morning glory (Ipomoea and Merremia) species to residual herbicides and the effect of drought periods on efficacy

Ribeiro¹,

Torres²,

Ramos³

et al. 2018

Aust J Crop Sci

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The plants commonly known as morning glory belong to the genera Ipomoea and Merremia and are among the most important weeds in Brazil. Greenhouse studies were conducted in 2016/2017 to compare the susceptibility of different morning glory species-Ipomoea quamoclit, I. nil, I. hederifolia, I. triloba, Merremia aegyptia, and M. cissoides to soil-applied herbicides and to evaluate the effectiveness of these herbicides after periods of drought. In the first experiment, to evaluate the efficacy of each herbicide at pre-emergence stage, a fully randomized 6 (doses) x 6 (species) factorial experimental design with six replicates was used. The herbicides tebuthiuron (3,200; 1,600; 800; 400; 200 and 0.0 g a.i ha-1), amicarbazone (2,100; 1,050; 750; 375; 187 and 0.0 g a.i ha-1), sulfentrazone (1,200; 600; 300; 150 75 and 0.0 g a.i ha-1), mesotrione (240; 120; 60; 30; 15 and 0.0 g a.i ha-1), saflufenacil (200; 100; 50; 25; 12 and 0.0 g a.i ha-1), and imazapic (360; 180; 90; 45; 22 and 0.0 g a.i ha-1) were applied. Ipomoea hederifolia, I. nil, and I. quamoclit were most susceptible to saflufenacil; I. triloba and M. cissoides were most susceptible to tebuthiuron; and M. aegyptia was most susceptible to amicarbazone. Therefore, the best herbicide treatment depends on the species of morning glory. In the second experiment, to determine the effectiveness of herbicides after periods of drought, the treatments were arranged, for each herbicide, in a fully randomized 6 x 5 factorial design with four replicates, six species of morning glory, and five sowing times after periods of drought (0, 15, 30, 45, and 60 days after application (DAA) of the herbicides) relative to the application of the amicarbazone (1,050 g a.i ha-1), imazapic (180 g a.i ha-1), mesotrione (120 g a.i ha-1), saflufenacil (100 g a.i ha-1), sulfentrazone (600 g a.i ha-1), and tebuthiuron (1,600 g a.i ha-1). Herbicide effectiveness after periods of drought began to decrease after 15 days for saflufenacil; 30 days for imazapic, mesotrione, and tebuthiuron; 45 days for amicarbazone; and 60 days for sulfentrazone. Preemergence application of amicarbazone and sulfentrazone exhibited consistent efficacy during the drought periods, satisfactorily controlling the species of morning glory.

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Section: Experiments 1: Susceptibility Of Different Morning Glory Specsupporting

confidence: 91%

Differential susceptibility of morning glory (Ipomoea and Merremia) species to residual herbicides and the effect of drought periods on efficacy

Ribeiro¹,

Torres²,

Ramos³

et al. 2018

Aust J Crop Sci

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“…Its use becomes relevant to control weeds such as the ones from the Convolvulaceae family. Silva et al (2015), observed over 80% control for the Merremia aegyptia, Ipomoea purpurea, Luffa aegyptiaca, Mucuna aterrima and Ricinus communis species, when sulfentrazone was applied in post-emergence in the commercial dose (600 g ha -1 ). Silva et al (2012), verified sensitivity of M. aterrima, M. cinerea and M. deeringiana to sulfentrazone and amicarbazone at 45 DAA, when applied in preemergence.…”

Section: Resultsmentioning

confidence: 97%

Interação entre herbicidas e nematicidas na cultura da cana-de-açúcar

et al. 2016

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A cana-de-açúcar tem grande importância econômica no Brasil. Para manter sua produtividade diversos fatores bióticos e abióticos podem influenciar positiva ou negativamente. Dentre eles, podem ser citados as plantas daninhas, os nematoides e a interação entre produtos fitossanitários para o controle de ambos. Em função disto, o presente trabalho teve como objetivo estudar a interação entre herbicidas e nematicidas usados na cultura da cana-de-açúcar. O delineamento experimental foi inteiramente casualizado em esquema fatorial 5 x 3, com 4 repetições. O primeiro fator corresponde aos herbicidas sulfentrazone (800 g ha-1 a.i.), saflufenacil (98 g ha-1 a.i.), diuron + hexazinone (1170 g ha-1 a.i. + 330 g ha-1 a.i.), amicarbazone (1050 g ha-1 a.i.), mais a testemunha; o segundo fator aos nematicidas benfuracarbe (2000 g ha-1 a.i.), carbofuran (1750 g ha-1 a.i.), mais a testemunha. Os nematicidas foram aplicados em contato com os toletes e os herbicidas aplicados em pré-emergência da cultura, sendo realizado nas variedades de cana-de-açúcar RB867515, RB975201 e RB975952. As avaliações de fitotoxicidade foram realizadas aos 7, 15, 30, 45 e 60 dias após a emergência (DAE) da cultura. Na última avaliação foram determinados os parâmetros biométricos altura, área foliar e biomassa seca da parte aérea. Todas as plantas se recuperaram aos 60 DAE, sendo que nos tratamentos com o uso do herbicida sulfentrazone foram observados sintomas mais elevados de intoxicação. Quanto aos parâmetros biométricos avaliados aos 60 DAE, não houve interação significativa para os fatores herbicida e nematicida, mas houve diferença entre os tratamentos em cada variedade.

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“…In this work, saflufenacil high efficacy must be detached, what became impossible to differentiate species even at the lowest rate, such as 1.5 g ha -1 . Silva, Monquero and Munhoz (2015) reported weed differential susceptibility to saflufenacil at 7, 14 and 21 DAA. Between five weed species, I. purpurea was the most susceptible one, being completely controlled by saflufenacil at the rate of 25 g ha -1 .…”

Section: Resultsmentioning

confidence: 99%

“…Percent control was evaluated at 7, 14 and 28 days after application (DAA), as well as residual dry mass at 28 DAA. For percent control, 0% was attributed to plants with absence of symptoms and 100% to death plants, according to the recommendation of Brazilian Weed Science Society (SBCPD, 1995). Plant residual mass was collected from the plots and dried in an oven at 70ºC for 72 hours.…”

Section: Methodsmentioning

confidence: 99%

Susceptibility of four Ipomoea genus weed species to the herbicides saflufenacil or flumioxazin

Carvalho

Nery

Madeira

et al. 2020

R. Agrogeoambiental

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Among weeds commonly found in Brazil that directly interfere on agriculture, those classified in Convolvulaceae Family may be highlighted, particularly Ipomoea L. genus, popularly known as morning glories. Flumioxazin and saflufenacil are herbicide molecules registered to control these weeds. In this context, this work was developed with the objective of evaluating the susceptibility of four Ipomoea genus weed species to the herbicides flumioxazin and saflufenacil. Two similar and independent experiments were performed in 2017, adopting completely randomized blocks and four replicates. Treatments were organized according to an 8x4 factorial scheme, which eight were the rates of each herbicide and four were the weed species of Ipomoea genus (I. hederifolia, I. nil, I. quamoclit and I. triloba). The following rates were adopted to saflufenacil (g ha-1): 0, 1.5, 3.0, 6.1, 12.3, 24.5, 49.0 and 98.0. The rates adopted to flumioxazin were (g ha-1): 0, 3.75, 7.5, 15.0, 30.0, 60.0, 120.0 and 480.0. Ipomoea genus weed species were completely controlled by the herbicides saflufenacil and flumioxazin, which may be considered excellent alternatives to control morning glories. I. triloba and I. nil were identified as the least sensible species to flumioxazin at the rate of 3.75 g ha-1; lower control of I. triloba was also identified with 7.5 g ha-1 of flumioxazin; rates equal to or higher than 15.0 g ha-1 promoted total control of weeds.

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Controle Em Pós-Emergência De Plantas Daninhas Por Herbicidas Utilizados Na Cultura Da Cana-De-Açúcar

Cited by 10 publications

References 10 publications

Differential susceptibility of morning glory (Ipomoea and Merremia) species to residual herbicides and the effect of drought periods on efficacy

Differential susceptibility of morning glory (Ipomoea and Merremia) species to residual herbicides and the effect of drought periods on efficacy

Interação entre herbicidas e nematicidas na cultura da cana-de-açúcar

Susceptibility of four Ipomoea genus weed species to the herbicides saflufenacil or flumioxazin

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