Desenvolvimento E Produtividade Do Algodoeiro Em Função Da Aplicação De Subdoses De Ácido Diclorofenoxiacético E Cloreto De Mepiquat

Américo, Gabriela Helena Pinê; Júnior, Enes Furlani; Américo-Pinheiro, Juliana Heloísa Pinê; Santos, Danilo Marcelo Aires dos

doi:10.37856/bja.v91i2.212

Cited by 2 publications

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“…showing a beneficial effect, stimulating growth in the height of the FMT 701 and Fibermax 966 cultivars of cotton (Américo et al, 2016), and the M-Soy 8866 and HO Cristalino Ipro cultivars of soya (Pinheiro et al, 2021); however, in the cotton, the FMT 701 cultivar was more responsive to the hormesis effect, while in the soya during the V2 and V5 vegetative stages (2 and 5 leaves), the M-Soy 8866 cultivar had the best height response for the range of doses from 0.20 to 36.01 g e.a. ha -1 .…”

Section: Resultsmentioning

confidence: 99%

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Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon

Barreto,

Arcanjo Alves,

Ribeiro Rocha

et al. 2024

Com. Sci.

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The slow growth of the pineapple (Ananas comosus (L.) Merr.) during the vegetative phase prolongs the crop cycle, resulting in higher production costs. When used in low doses, some herbicides can stimulate plant growth, a phenomenon known as hormesis. The aim of this study was to determine the effects of sub-doses of glyphosate and 2,4-dichlorophenoxyacetic acid (2,4-D) on growth in the Pérola cultivar of the pineapple. The treatments under study consisted of glyphosate applications of 0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360 and 720 g a.e. ha-1, and 2,4-D applications of 0, 1.68, 3.35, 6.70, 16.75, 33.5, 67, 167.5, 335 and 670 g a.e. ha-1. The experiments were completely randomised with four replications. The plants were grown in the greenhouse in pots with a capacity of 8 dm3 substrate. Growth variables were evaluated in the plants, together with the total and partitioned accumulated biomass (leaf, stem and root). The data were submitted to analysis of variance and regression. The pineapple showed greater phytotoxicity from the glyphosate herbicide at applications ranging from 18 to 720 g a.e. ha-1 and from 2,4-D in the range of 167.5 to 670 g a.e. ha-1. The hormesis effect was evidenced by the 32.25% increase in root fresh weight at the dose of 1.8 g a.e. ha-1 glyphosate. However, the slow growth of the pineapple was not overcome by the hormesis effect of the herbicides.

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Section: Resultsmentioning

confidence: 99%

“…The hormesis effect caused by herbicides has been demonstrated in maize, eucalyptus, pine (Velini et al, 2008), cotton (Américo et al, 2016) and soya (Pinheiro et al, 2021). However, there appear to be no studies of hormesis for stimulating vegetative growth in the pineapple.…”

Section: Introductionmentioning

confidence: 99%

Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon

Barreto,

Arcanjo Alves,

Ribeiro Rocha

et al. 2024

Com. Sci.

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Efeitos De Subdoses De 2,4-D E Picloram Na Cultura Do Algodoeiro

et al. 2021

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O objetivo da pesquisa foi avaliar características vegetativas e reprodutivas do algodoeiro pelo uso de subdoses dos herbicidas 2,4-D + picloram em diferentes estágios fenológicos da cultura. Experimento conduzido no delineamento de blocos casualizados em esquema fatorial, com tratamentos constituídos pela combinação de quatro subdoses dos herbicidas 2,4-D + picloram (0, 10, 25 e 50 ml do produto comercial ha-1) e aplicação com volume de calda de 200 L ha-1, em diferentes estágios fenológicos do algodoeiro (B1, B2, B3 e B5), com 4 repetições. A semeadura da cultivar IMA 5801 B2RF em 06 de dezembro de 2018, posteriormente realizou-se avaliações de desenvolvimento vegetativo e reprodutivo no algodoeiro. A aplicação de subdoses de 2,4-D + picloram resultou na diminuição das suas características agronômicas, tendo maior decréscimo com o aumento das subdoses, aplicadas principalmente, nos estágios iniciais B1 e B2. A aplicação de subdoses de 2,4-D + picloram não promove o efeito hormese na cultura do algodoeiro.

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Desenvolvimento E Produtividade Do Algodoeiro Em Função Da Aplicação De Subdoses De Ácido Diclorofenoxiacético E Cloreto De Mepiquat

Cited by 2 publications

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Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon

Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon

Efeitos De Subdoses De 2,4-D E Picloram Na Cultura Do Algodoeiro

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