Avaliação Da Cultura Do Milho Submetida À Hormesis

Sousa, Saulo Fernando Gomes de; Silva, Paulo Roberto Arbex; Benez, Sérgio Hugo

doi:10.17224/energagric.2014v29n2p128-134

Cited by 2 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…the growth stimuli were stronger in the roots than in the leaves or stem (Silva et al, 2015). Other results show that using glyphosate at concentrations that are expected to produce a hormesis effect can result in harmful effects (Silva et al, 2012) or even the lack of any growth stimulus (Sousa et al, 2014), similar to the results seen in pineapple plants treated with 2,4-D in the present study. In addition, the growth stage of the plant and the time of application, the dose and type of drop that reaches the plant, and even the species, can influence the occurrence of the hormesis effect (Cedergreen, 2008;Carvalho et al, 2013;Cederlund, 2017).…”

Section: Resultssupporting

confidence: 89%

“…The effects of growth stimuli on parts of the plant or even the whole plant, the lack of any stimuli, and the factors that influence the occurrence of the hormesis effect when using herbicides should be considered when evaluating the results, especially in the long term (Velini et al, 2008;Cedergreen, 2008;Carvalho et al, 2013;Belz & Duke, 2014;Sousa et al, 2014;Cederlund, 2017).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

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.

View full text Add to dashboard Cite

show abstract

“…Research results have shown harmful effects from the use of glyphosate in concentrations that are expected to have a hormetic effect (SILVA et al, 2012) or even to have no effect and not stimulate growth (SOUSA et al, 2014). The use of glyphosate, even in subdoses, negatively affected the morphological variables of the pineapple and, consequently, the productivity of the crop at a subdose of 2.5 L ha -1 during post-emergence (MODEL et al, 2010).…”

Section: Glyphosatementioning

confidence: 99%

“…Resultados de pesquisas evidenciaram efeitos prejudiciais do uso do glyphosate em concentrações que se espera efeito hormesis (SILVA et al, 2012) ou até mesmo não ocasionar nenhum efeito, não tendo estímulo de crescimento (SOUSA et al, 2014). O uso do glyphosate, mesmo com subdoses, afetou, negativamente, as variáveis morfológicas do abacaxizeiro e, consequentemente, a produtividade da cultura, como verificado por Model et al (2010), com subdose de 2,5 L ha -1 em pós-emergência.…”

Section: Glyphosateunclassified

Herbicide-induced hormesis and its effect on crop development

Barreto¹,

Alves²,

Rocha³

et al. 2023

AGRO@MBIENTE ON-LINE

View full text Add to dashboard Cite

The beneficial effect of growth stimulation caused by low doses of a toxic product such as an herbicide, is due to the phenomenon known as hormesis. Plants affected by this phenomenon show changes in their metabolism and, as a result, are able to increase nutrient absorption and biomass accumulation. Various herbicides have been developed as growth regulators, proving the hormesis hypothesis. The most notable example is the product 2,4-D, originally developed as auxin. This phenomenon can bring benefits for crops, such as increased yield. However, for the technique to be applied in practice, information is still needed to support its potential application in agriculture. The aim of this review was to define the state of the art and measure the effect of the hormesis phenomenon of herbicides in agriculture. To carry out a bibliographical review using the following databases: SciELO, Scopus, Web of Science, Redalyc, EBSCO, and DOAJ. The quality of the studies was assessed using eligibility, inclusion and exclusion criteria, employing the following indexing terms: dichlorophenoxyacetic acid, herbicide subdose, herbicide toxicity, and growth regulator. Based on a summary of the studies identified via electronic or manual searches relating to the phenomenon of hormesis, it was found that the literature on the subject remains ambiguous, with no consensus regarding the real effects of the phenomenon on crop performance. This article further argues that the magnitude of the hormetic effect on crops depends on several factors, such as the subdose, the age of the plant, and other conditions.

show abstract

Avaliação Da Cultura Do Milho Submetida À Hormesis

Cited by 2 publications

References 21 publications

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

Herbicide-induced hormesis and its effect on crop development

Contact Info

Product

Resources

About