Action of Canavalia ensiformis in remediation of contaminated soil with sulfentrazone

Madalão, João Carlos; Souza, Matheus Fonseca de; Silva, Alberto Antônio; Silva, Daniel Valadão; Jakelaitis, Adriano; Pereira, Gustavo Antônio Mendes

doi:10.1590/1678-4499.526

Cited by 22 publications

(8 citation statements)

References 33 publications

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“…Each fraction was placed in pots without drainage holes with a capacity of 300 cm 3 in which the bioindicator species sorghum (Sorghum bicolor) was planted. This species was used as a bioindicator of sulfentrazone in the soil because it is highly sensitive to the herbicide (Faustino et al, 2015;Silva et al, 2016;Madalão et al, 2017). For this reason, 7 seeds were added to the soil, and three seedlings were left after thinning.…”

Section: Methodsmentioning

confidence: 99%

Leaching and Persistence of Sulfentrazone when Mixed with Adjuvants

et al. 2019

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The objective of this work was to study the influence of adjuvants on leaching and persistence of sulfentrazone in a Red-Yellow Ultisol. The soil was stored in PVC columns of 10 cm diameter and 50 cm length. The treatments were composed of sulfentrazone mixed with six adjuvants (Adesil®, Break-Thru®, Assist®, Hoefix®, Fera® and Nortox® Vegetable Oil), a treatment with sulfentrazone without any adjuvant and a treatment without the herbicide. In the treatments with sulfentrazone, the herbicide was applied at a rate of 1.0 kg ha-1 at the top of the columns, and 12 hours after application, the columns were subjected to simulated rainfall (60 mm). To confirm leaching of sulfentrazone, soil samples were collected every 5 cm up to 50 cm in each column and transferred to 300 cm3 pots to conduct a bioassay using the species Sorghum bicolor. At 21 days after emergence (DAE) of sorghum, visual assessment of intoxication was performed and shoot dry matter percentage was determined. To determine the influence of adjuvants on persistence of sulfentrazone in the soil, new sorghum seeds were planted as soon as the sorghum plants from the first planting were cut; also, phytotoxicity scores were assigned and shoot dry matter was determined at 21 DAE. This procedure was repeated up to 173 days after herbicide application, when the plants showed no more visual symptoms of intoxication. The adjuvant Break-Thru® was effective at reducing leaching of sulfentrazone. The presence of adjuvants applied together with sulfentrazone did not influence the persistence of the herbicide in the study soil. Persistence of sulfentrazone lasted for 143 days.

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Section: Methodsmentioning

confidence: 99%

Leaching and Persistence of Sulfentrazone when Mixed with Adjuvants

et al. 2019

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“…Another fraction (250g) of each treatment was placed in pots of 300 cm 3 capacity, where the bioindicator Sorghum bicolor was planted. S. bicolor was selected as an indicator of sulfentrazone residues in soil based on several studies (Faustino et al, 2015, Silva Junior et al, 2016, Madalão et al, 2017 that confirmed the high sensitivity of this species to sulfentrazone.…”

Section: Soilmentioning

confidence: 99%

Leaching of sulfentrazone in Brazilian “Cerrado” soils by chromatographic and biological methods

Madalão

Freitas

Tavares

et al. 2017

Agraria

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Sulfentrazone is a mobile herbicide in the soil that can reach groundwater. The objective of this study was to verify the leaching of sulfentrazone in samples from three Brazilian "Cerrado" soils, and compare the biological with the chromatographic method to determine the leaching. The soils were PVC columns (10 cm in diameter x 50 cm in length), 1.5 kg ha -1 of sulfentrazone was applied to the top of the columns. Twelve hours after the application of the herbicide, they were submitted to simulated rainfall (60 mm). To the herbicide leaching, in each column, soil samples were collected every 5 cm, being the experiment mounted in subdivided plots (plots: columns, subplots: depths). From these, a fraction was sent to the laboratory for analysis by high performance liquid chromatography (HPLC). Another fraction was placed in pots, performing bioassay with Sorghum bicolor. Sulfentrazone leached more in treatments Tillage System -Sandy Soil -High acidity and Tillage System -Red Latosol -Low acidity, being quantified by HPLC at depths of 5, 10 and 15 cm and detected in the same depths by bioassay. In treatment, Native Forest -Red Latosol -High acidity the herbicide leached up to 10 cm, also being detected by HPLC and bioassay. The biological method, when compared to the chromatographic, presents good sensitivity to sulfentrazone, being able to be used for leaching study of this herbicide. Lixiviação do sulfentrazone em solos característicos do Cerrado brasileiro pelos métodos cromatográfico e biológico RESUMOSulfentrazone é um herbicida móvel no solo podendo atingir águas subterrâneas. Objetivou-se com este trabalho estudar a lixiviação do sulfentrazone em amostras de três solos do Cerrado brasileiro e comparar o método biológico com o cromatográfico para determinação da lixiviação. Os solos foram acondicionados em colunas de PVC (10 cm de diâmetro x 50 cm de comprimento), foi aplicado 1,5 kg ha -1 de sulfentrazone no topo das colunas. Doze horas após a aplicação do herbicida, essas foram submetidas à chuva simulada (60 mm). Para a confirmação da lixiviação do herbicida em cada coluna, foram coletadas amostras de solo a cada 5 cm, sendo o experimento montado em parcelas subdivididas (parcelas: colunas; subparcelas: profundidades). Dessas, uma fração foi enviada ao laboratório para analise por cromatografia líquida de alta eficiência (CLAE). Outra fração foi colocada em vasos, realizando bioensáio com a espécie Sorghum bicolor. O sulfentrazone lixiviou mais nos tratamentos Plantio direto -Neossolo Quartzarênico -acidez alta e Plantio direto -Latossolo Vermelho -acidez baixa, sendo quantificado por CLAE nas profundidades de 5, 10 e 15 cm e detectado nas mesmas profundidades por bioensaio. No tratamento Mata nativa -Latossolo vermelho -acidez alta o herbicida lixiviou até 10 cm, também sendo detectado por CLAE e pelo método biológico. O método biológico apresenta boa sensibilidade à presença do sulfentrazone, podendo ser utilizado para estudo de lixiviação desse herbicida.Palavras-chave: bioensaio; contaminação ambiental;...

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“…This information is of utmost importance when thinking of the agronomic use that phytoremediation of herbicides may have. Madalão et al (2017) evaluated the phytoremediation potential of C. ensiformis in the field and concluded that this species is efficient in remedying sulfentrazone. They also emphasized that it is not necessary to remove the residuals of the remediation species before planting the bioindicator species.…”

Section: Amentioning

confidence: 99%

The residues of Canavalia ensiformis and Crotalaria juncea after phytoremediation in soil contaminated with sulfentrazone do not result in soil recontamination

Ferraço¹,

Belo²,

Madalão³

et al. 2019

Agraria

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Phytoremediation is an alternative for the decontamination of areas that have received intense applications of herbicides. This study aimed to verify the reuse possibility of Canavalia ensiformis and Crotalaria juncea as green manure and the influence of the vegetation cover after phytoremediation of soil contaminated with sulfentrazone on the growth and development of Pennisetum glaucum. Two experiments were carried out in a greenhouse. One of the experiments was conducted with C. juncea and the other with C. ensiformis, two phytoremediation species of the sulfentrazone herbicide. The experiments were set up in 4 x 3 factorial, with the first factor being four population densities of the phytoremediate species (C. juncea -0, 60, 120 and 240 plants m -2 ; C. ensiformis -0, 10, 20 and 40 plants m -2 ), and the second composed by three sulfentrazone doses (0, 200 and 400 g ha -1 ). Seventy-five days after emergence (DAE), the plants were collected by separating the aerial parts and roots to determine the sulfentrazone accumulation in the plants by using high performance liquid chromatography. Plant extract was prepared from the vegetable material and applied in pots containing washed sand, followed by the sowing of the indicative plant (Pennisetum glaucum). It was evaluated as to its phytotoxicity plant height, aerial part and roots dry matter. P. glaucum cultivated in the substrate that received leaf extract from C. ensiformis and C. juncea cultivated in soils with presence of sulfentrazone did not display any intoxication symptom to this herbicide. The extracts from Canavalia ensiformis and Crotalaria juncea were not phytotoxic to the millet, indicating that these species can be used as green fertilization after phytoremediation of the sulfentrazone in the soil.A permanência de resíduos de Canavalia ensiformis e Crotalaria juncea após fitorremediação em solo contaminado com sulfentrazone não resulta em recontaminação do solo RESUMO: A fitorremediação é uma alternativa para a descontaminação de áreas que receberam intensas aplicações de herbicidas. Objetivou-se com esse estudo verificar a possibilidade de reutilização de Canavalia ensiformis e Crotalaria juncea como adubo verde e a influência da cobertura vegetal após fitorremediação de solo contaminado com sulfentrazone sobre o crescimento e desenvolvimento de Pennisetum glaucum. Foram realizados dois experimentos em casa-de-vegetação. Um dos experimentos foi conduzido com C. juncea e outro com C. ensiformis, duas espécies fitorremediadoras do herbicida sulfentrazone. Os experimentos foram montados em fatorial 4 x 3, sendo o primeiro fator quatro densidades populacionais das espécies fitorremediadoras (C. juncea -0, 60, 120 e 240 plantas m -2 ; C. ensiformis -0, 10, 20 e 40 plantas m -2 ) e o segundo três doses de sulfentrazone (0, 200 e 400 g ha -1 ). Setenta e cinco dias após a emergência (DAE) as plantas foram coletadas separando-se a parte aérea e a raiz para determinação da acumulação de sulfentrazone nas plantas por cromatografia líquida de alta eficiência....

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Action of Canavalia ensiformis in remediation of contaminated soil with sulfentrazone

Cited by 22 publications

References 33 publications

Leaching and Persistence of Sulfentrazone when Mixed with Adjuvants

Leaching and Persistence of Sulfentrazone when Mixed with Adjuvants

Leaching of sulfentrazone in Brazilian “Cerrado” soils by chromatographic and biological methods

The residues of Canavalia ensiformis and Crotalaria juncea after phytoremediation in soil contaminated with sulfentrazone do not result in soil recontamination

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