Selectivity of Herbicides Applied Separately or in Combination in the Post Emergence of Rr2 Maize

Giovanelli, Bruno Flaibam; Silva, André Felipe Moreira; Albrecht, Alfredo Júnior Paiola; Aiello, Luiz Henrique Freguglia; Ghirardello, Giovani Apolari; Albrecht, Leandro Paiola; Filho, Ricardo Victória

doi:10.37856/bja.v93i1.3196

Cited by 8 publications

(10 citation statements)

References 9 publications

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“…At 21 and 28 DAA no further reductions were observed. These findings are in line with those reported by Chahal and Jhala (2018) and Giovanelli et al (2018), in which the high selectivity is linked to the high expression levels of the pat gene.…”

Section: Experiments IIsupporting

confidence: 93%

“…For maize, as alternative herbicides or as a complement to glyphosate, atrazine (mechanism of action of PSII inhibitors) can be highlighted. It can be applied in the pre-or post-emergence of the crop, with an effect on eudicotyledonous weeds in pre-emergence or post-initial (Barnes et al, 2020;Langdon et al, 2021); and it is selective for maize (Giovanelli et al, 2018). Araújo et al (2021) do not observe reductions in yield or 100-grain weight or changes in nutrient contents, even with the use of high rates of glyphosate and glufosinate in RR2/ LL maize.…”

Section: Introductionmentioning

confidence: 99%

“…Silva et al (2017) observe injury >5% in maize, for glyphosate (1080 g acid equivalent [ae] ha -1 ), glufosinate (500 g active ingredient [ai] ha -1 ) and atrazine (2000 g ai ha -1 ), applied alone and in mixtures. Other studies suggest possible undesirable effects of the herbicide application in maize, such as symptoms of injury, when glyphosate was applied in mixtures with other herbicides (Giovanelli et al, 2018;Soltani et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Growth, development, and chlorophyll indexes of glyphosate and glufosinate-tolerant maize under herbicide application

Albrecht

Silva²,

Krenchinski

et al. 2022

Agron. Colomb.

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Glyphosate, glufosinate, and atrazine do not affect the growth and development of glyphosate and glufosinate-tolerant (RR2/LL) maize; however, the results are less consolidated for these herbicides applied in mixtures. The aim of the present study was to evaluate the effects of post-emergent application of glyphosate, glufosinate, and atrazine, alone and in mixtures, on the growth and development of the RR2/LL maize. The treatments consisted of the application of glyphosate (1080 g of acid equivalent [ae] ha-1), glufosinate (500 g of active ingredient [ai] ha-1), atrazine (2000 g [ai] ha-1), glyphosate + glufosinate, glyphosate + atrazine, glufosinate + atrazine, glyphosate + glufosinate + atrazine, and the control (without application). The experiment was carried out in two locations under greenhouse conditions with different maize hybrids. Crop injury and variables of the agronomic performance (height, stem diameter, chlorophyll indexes, fresh and dry weight of shoot, root dry weight, and total dry weight) were evaluated. Herbicides applied alone or in binary mixtures did not cause major damage. However, the application of the three associated herbicides in some situations might result in detrimental effects on the development of the RR2/LL maize.

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Section: Experiments IIsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Growth, development, and chlorophyll indexes of glyphosate and glufosinate-tolerant maize under herbicide application

Albrecht

Silva²,

Krenchinski

et al. 2022

Agron. Colomb.

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“…As herbicides alternative to glyphosate, used in postemergence of maize, are applied atrazine, nicosulfuron, mesotrione, tembotrione and others, alone or in mixtures (Rodrigues & Almeida, 2018). Studies highlight the efficacy and/or selectivity of these herbicides in maize, however most often in association with glyphosate (Soltani et al, 2010;Giovanelli et al, 2018). There are few recent studies evaluating efficacy and/or selectivity of these herbicides, without association with glyphosate, in maize.…”

Section: Introductionmentioning

confidence: 99%

Efficacy and selectivity of alternative herbicides to glyphosate on maize

Giraldeli

Silva

et al. 2019

Rev. Ceres

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The aim was to evaluate the selectivity and weed control of herbicides atrazine, nicosulfuron, mesotrione and tembotrione, applied alone and associated, in post-emergence of maize. Were carried out two experiments, one in the field in a randomized complete block design with four replications and eleven treatments, the second in greenhouse in a completely randomized design, with four replications and ten treatments. The treatments were composed of isolated and associated herbicides. Treatments were applied V4 stage of plants. For first experiment, crop injury and control evaluations were performed, as well as variables related to agronomic performance (plant height, ear insertion height, prolificacy index, yield and mass of 1,000 grains) and mass of weeds. For second experiment, evaluations of crop injury, height, diameter and dry mass of plants were performed. The lower yield for experiment one was verified in the treatment where only mesotrione was applied, which was attributed to the lower control of monocotyledons weeds. Crop injury were observed at 21 DAA in both experiments, but not exceeding 7.5%. All treatments were considered selective to maize. The herbicides atrazine, nicosulfuron, mesotrione and tembotrione, at associations, were effective in the weed control, except the association atrazine + mesotrione.

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“…Nesse contexto, o FEP é um produto à base de aminoácidos que contém bioestimulante composto por uma fração orgânica selecionada para fornecer ácidos húmicos e fúlvicos, glicina-betaína e zeatina e uma fração mineral (Santos et al, 2013b (Nicolai et al, 2006;Portugal, 2013;Giovanelli et al, 2018 (Contiero, 2009;Espanhol, 2009), assim como à aplicação tardia dos herbicidas que podem afetar a diferenciação floral da panícula e, consequentemente, componentes da produção tais como o NFG e a quantidade de grãos por espiga (Andrade et al, 1996 (FEP). Guarapuava-PR, 2016/17.…”

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Deposição Da Aplicação De Herbicidas E Fertilizante Foliar No Manejo De Plantas Daninhas Na Cultura Do Milho

Helvig

Maciel

Silva

et al. 2020

RBMS

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O trabalho teve como objetivo avaliar a deposição da pulverização, assim como a seletividade e eficiência no controle de plantas daninhas de misturas em tanque de herbicidas associadas ou não ao fertilizante foliar Fertiactyl Pós® na cultura do milho. Dois experimentos foram realizados a campo com os híbridos P2530® (convencional) e DKB 330PRO2® (transgênico), na fazenda escola da Universidade Estadual do Centro-Oeste - UNICENTRO, Campus CEDETEG, Guarapuava-PR, durante a safra agrícola 2016/2017. O delineamento utilizado foi o de blocos ao acaso, com oito tratamentos e cinco repetições, em fatorial 3x2+2. Os fatores foram três misturas de herbicidas com atrazine (ATR) + nicosulfuron (NIC) (1000 + 45 g i.a. ha-1), ATR + mesotrione (MES) (1000 + 144 g i.a. ha-1); ATR + tembotrione (TEM) (1000 + 100,8 g i.a. ha-1), duas condições de associação ou não ao fertilizante foliar Fertiactyl Pós® (FEP) (400 mL ha-1), com testemunhas capinadas e sem capina. A associação de FEP com os herbicidas ATR + NIC, ATR + MES e ATR + TEM não interferiu na deposição da pulverização em milho e erva quente (Spermacoce latifolia), assim como na eficiência de controle de plantas daninhas e produtividade de grãos. O FEP associado as misturas em tanque dos herbicidas apenas apresentou resultado promissor na redução da fitointoxicação visual e manutenção dos níveis de clorofila iniciais na cultura do milho.

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Selectivity of Herbicides Applied Separately or in Combination in the Post Emergence of Rr2 Maize

Cited by 8 publications

References 9 publications

Growth, development, and chlorophyll indexes of glyphosate and glufosinate-tolerant maize under herbicide application

Growth, development, and chlorophyll indexes of glyphosate and glufosinate-tolerant maize under herbicide application

Efficacy and selectivity of alternative herbicides to glyphosate on maize

Deposição Da Aplicação De Herbicidas E Fertilizante Foliar No Manejo De Plantas Daninhas Na Cultura Do Milho

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