Deriva simulada de glyphosate em algodoeiro: efeito de dose, cultivar e estádio de desenvolvimento

Yamashita, Oscar Mitsuo; Guimarães, Sebastião Carneiro

doi:10.1590/s0100-83582006000400024

Cited by 15 publications

(7 citation statements)

References 10 publications

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“…In their absence, the reduction in chlorophyll leads to chlorosis and necrosis, especially sheets expanding, as evidenced in this study. Consistent with the data obtained in this work, yellowing symptoms, followed by chlorosis and necrosis, have also been demonstrated in cotton (Yamashita and Guimaraes, 2006), with poisoning occurring faster in younger plants and at the highest dose of glyphosate, and in some cases resulting in the death of the plant. In addition to the morphological results, Figures 8 and 9 indicate the absence of symptoms in sunflower plants subjected to trinexapac-ethyl, which may have occurred due to the low concentrations of the regulator applied.…”

Section: Resultssupporting

confidence: 90%

Sunflower Plant Response to Simulated Drift of Glyphosate and Trinexapac-Ethyl

et al. 2017

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-Chemical ripeners are frequently used on sugarcane crops in order to increase profitability. However, the drift of these products to neighbouring fields can expose susceptible non-target plants, such as sunflower, to these agents causing indirect impacts on growth and development. Therefore, this study aimed to assess the toxicity characterize possible changes in the growth of sunflower plants exposed to simulated drift of the ripeners glyphosate and trinexapac-ethyl. For each ripener, the following doses were used: glyphosate (0 (control), 3.6, 7.2, 14.4, 28.8 and 86.4 g a.e ha -1) and trinexapac-ethyl (0, 3.12, 6.25, 12.50, 25 and 75 g a.i ha -1 ). The effects of these products on plant height, number of leaves, leaf area, stem diameter and dry matter (leaves, stem, flower, root, shoot and total) were evaluated. We also conducted a visual analysis of symptoms of phytotoxicity after exposure. The effects of the ripeners on sunflower plants varied depending on the type of agent used and the dose. Plants treated with glyphosate showed altered growth patterns, indicating high sensitivity of these plants to the herbicide. With increasing doses, glyphosate drift promoted lower growth and development of sunflower plants and negatively affected productivity. Nevertheless, trinexapac-ethyl drift, in the evaluated doses, did not affect sunflower plants. Keywords:Helianthus annus, phytotoxicity, herbicide, growth regulator. (0 -controle; 3,6; 7,2; 14,4; 28,8; e 86,4 g e.a ha -1 ); e trinexapac-ethyl: (0 -controle; 3,12; 6,25; 12,50; 25; e RESUMO -Atualmente, na cultura da cana-de-açúcar, têm-se utilizado com frequência maturadores químicos, de forma a aumentar sua rentabilidade. No entanto, a deriva desses produtos pode expor plantas suscetíveis não alvo, como o girassol, impactando indiretamente o crescimento e o desenvolvimento da cultura. Portanto, objetivou-se neste estudo avaliar a intoxicação e caracterizar possíveis alterações no crescimento de plantas de girassol expostas à deriva simulada de glyphosate e trinexapac-ethyl. Para cada maturador, foram utilizadas as seguintes doses: glyphosate

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Section: Resultssupporting

confidence: 90%

Sunflower Plant Response to Simulated Drift of Glyphosate and Trinexapac-Ethyl

et al. 2017

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“…caused the plants apexes death, especially in species, E. grandis, E. urophylla, E. saligna and E. pellita at 15 days after application (DAA). More severe symptoms of intoxication, such as necrosis, leaf wilting, over budding death of apical meristems and plant death, have been reported in other studies with Eucalyptus (Tuffi Santos et al, 2006), peach (Tuffi Santos et al, 2009) and pod (Yamashita et al, 2006) submitted to glyphosate drift.…”

Section: Herbicides Drift Impact On Cultivated Cropssupporting

confidence: 53%

Deriva da aplicação de herbicidas sobre plantas cultivadas e nativas: uma revisão

et al. 2016

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-Although the application of herbicides is essential for weed control and increased productivity of several crops, it is widely known that these products may affect non-target organisms. This impact may occur both in parallel to other cultivated crops, and in remaining vegetation next to farmland. Little is known about the effect that herbicides can present in these non-target species, and they are of considerable importance both in food production and in the conservation of natural landscapes. This study aims to address the different impacts that herbicides can cause in several cultivated species typically known and in native species that are important in environmental conservation. Keywords: phytotoxicity; monitoring; conservation; food production Resumo -Embora a aplicação de herbicidas seja essencial para o controle de plantas daninhas e no aumento da produtividade de diversas culturas, é de conhecimento que esses produtos possam afetar organismos não alvos. Este impacto pode ocorrer tanto em culturas cultivadas paralelas a outras, quanto em vegetações remanescentes próximas às áreas agricultáveis. Pouco se sabe sobre o efeito que os herbicidas podem apresentar nessas espécies não alvos, e os mesmos tem uma importância considerável tanto na produção de alimentos quanto na conservação de paisagens naturais. Este estudo buscou abordar os diferentes impactos que os herbicidas podem ocasionar em várias espécies cultivadas tipicamente conhecidas e em espécies nativas de importância na conservação ambiental.

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“…Beyond the reduction in the weed control efficacy, the spray drift becomes more undesirable due mainly to the toxic effects to the crops of interest (YAMASHITA; GUIMARÃES, 2006;FIGUEREDO et al, 2007;COSTA et al, 2009;MACIEL et al, 2009;GUSMÃO et al, 2011) and the direct injury to sensible neighboring crops, increasing the financial losses by judicial actions (COSTA et al, 2012b). In addition, herbicide drift may contaminate the food, the air, the soil, and the water resources as well as it may cause detrimental effects on human and animal security and health (COSTA et al, 2012b).…”

Section: Introductionmentioning

confidence: 99%

Differential Response of Clones of Eucalypt to Glyphosate1

2015

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-Weed control is commonly performed by the inter-row mechanical weeding associated to intrarow glyphosate directed spraying, causing a risk for drift or accidental herbicide application, that can affect the crop of interest. The objective was to evaluate the response of clones C219, GG100, I144, and I224 of eucalypt (Eucalyptus grandis x E. urophylla) to glyphosate doses of 0, 18, 36, 72, 180, 360, and 720 g of acid equivalent per hectare. The clones showed different growth patterns with regard to height, leaf number, stem dry weight, relative growth rate, net assimilation rate, and relative leaf growth rate. The clones I144 and GG100 were more susceptible to glyphosate, showing the doses required to reduce dry weight by 50% of 113.4 and 119.6 g acid equivalent per hectare, respectively. The clones C219 and I224 were less susceptible to glyphosate, showing the doses required to reduce dry weight by 50% of 237.5 and 313.5 g acid equivalent per hectare, respectively. Eucalyptus clones respond differently to glyphosate exposure, so that among I224, C219, GG100, and I144, the susceptibility to the herbicide is increasing.Keywords: Eucalyptus; N-(phosphonomethyl)-glycine; Spray drift. de 0, 18, 36, 72, 180, 360 RESPOSTA DIFERENCIAL DE CLONES DE EUCALIPTO A GLYPHOSATE RESUMO -O controle de plantas daninhas é comumente feito com roçadas na entrelinha associada a aplicações dirigidas de glyphosate na linha de plantio de culturas arbóreas, acarretando risco de deriva ou aplicação acidental do herbicida, que pode afetar a cultura de interesse. O objetivo foi avaliar a resposta dos clones C219, GG100, I144 e I224 de eucalipto (Eucalyptus grandis x E. urophylla) a doses de glyphosate

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Deriva simulada de glyphosate em algodoeiro: efeito de dose, cultivar e estádio de desenvolvimento

Cited by 15 publications

References 10 publications

Sunflower Plant Response to Simulated Drift of Glyphosate and Trinexapac-Ethyl

Sunflower Plant Response to Simulated Drift of Glyphosate and Trinexapac-Ethyl

Deriva da aplicação de herbicidas sobre plantas cultivadas e nativas: uma revisão

Differential Response of Clones of Eucalypt to Glyphosate1

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