Leaching of sulfentrazone in soils of reforestation in Brazil

Passos, Ana Beatriz R. J.; Freitas, M.A.M.; Gonçalves, Valdinei Araújo; Silva, Gustavo S.; Silva, Antônio Alberto da; Queiroz, Maria Eliana Lopes Ribeiro de; Lima, Cláudio F.; Silva, Daniel Valadão

doi:10.1007/s12665-015-4110-7

Cited by 16 publications

(10 citation statements)

References 13 publications

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“…Herbicide mobility in the soil profile can be beneficial to herbicides that exert their effect on seed or seedling during germination or emergence; however, in excess, it can lead to reduced effectiveness by percolation of the compound in the soil profile, besides the possibility of water table contamination. Passos et al (2015), working with sulfentrazone in soils collected in reforestation areas, have found that red acrisol with higher clay content, was the soil that retained in the first depths (0-15 cm) the highest concentration of the herbicide, whereas for haplic planosol, with the lowest content of clay and organic matter, the concentration of sulfentrazone found was almost homogeneous in all sections of the column. This result shows the great influence of clay and organic matter content in sulfentrazone mobility, in accordance with Grey et al (1997) and Melo et al (2010).…”

Section: (E)mentioning

confidence: 99%

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Leaching of Sulfentrazone in Soils from the Sugarcane Region in the Northeast Region of Brazil

et al. 2016

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Sulfentrazone leaching potential is dependent on soil properties such as strength and type of clay, organic matter content and pH, and may result in ineffectiveness of the product and contamination of groundwater. The objective of this study was to evaluate sulfentrazone leaching in five soils of the sugarcane region in the Northeast Region of Brazil, with different physical and chemical properties, by means of bioassay and high-performance liquid chromatography (HPLC) resolution. The experiment was conducted in a split plot in a completely randomized design. The plots had PVC columns with a 10 cm diameter and being 50 cm deep, filled with five different soil classes (quartzarenic neosol, haplic cambisol, yellowish-red latosol, yellowish-red acrisol, and haplic gleysol), and subplots for 10 depths in columns, 5 cm intervals. On top of the columns, sulfentrazone application was conducted and 12 hours later there was a simulated rainfall of 60 mm. After 72 hours, the columns were horizontally placed and longitudinally open, divided into sections of 5.0 cm. In the center of each section of the columns, soil samples were collected for chromatographic analyses and sorghum sowing was carried out as an indicator plant. The bioassay method was more sensitive to detect the presence of sulfentrazone in an assessment for chromatography soil, having provided greater herbicide mobility in quartzarenic neosol and yellowish-red latosol, whose presence was detected by the indicator plant to a depth of 45 and 35 cm, respectively. In the other soils, sulfentrazone was detected up to 20 cm deep. The intense mobility of sulfentrazone in quartzarenic neosol may result in herbicide efficiency loss in the soil because the symptoms of intoxication and the amount of herbicide detected via silica were highest between 15 cm and 35 cm depth regarding the soil surface layer (0-10 cm), indicating that sulfentrazone should be avoided in soils with such characteristics.

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Section: (E)mentioning

confidence: 99%

“…However, it has become common to measure the potential for leaching using columns with disturbed soil samples by means of biological and chromatographic assays. These experiments employ humidity and precipitation controlled conditions and enable comparison of different soil classes in a single assay (Freitas et al, 2014;Passos et al, 2015).…”

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confidence: 99%

Leaching of Sulfentrazone in Soils from the Sugarcane Region in the Northeast Region of Brazil

et al. 2016

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“…Thus, its molecular form has the ability to donate protons and form negatively charged ions in higher pH environments. Passos et al [21] showed that increasing the pH value above the pKa of the herbicide may increase the leaching of sulfentrazone, being a weak acid, as well as mesotrione. In soil pH levels ranging from 6.0 to 7.7, as is the case in this experiment, the mesotrione molecules are in a dissociated form and thus are more available in the soil solution.…”

Section: Leaching Mesotrione Alone and In A Mixturementioning

confidence: 99%

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

et al. 2017

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Herbicide leaching is influenced by soil physical and chemical properties as well as the prevailing climatic conditions. However, little is known about leaching of mixture of herbicides in the soil, especially in tropical regions like Brazil. The objective of this study is to evaluate the leaching of 14 C-mesotrione (cyclohexane-2-14 C-mesotrione) alone and in a mixture with S-metolachlor and terbuthylazine in seven tropical soil columns under laboratory conditions. These soils represented a wide range of properties with varying textures, cation exchange capacity (44 to 154 mmol c kg −1 ), pH (6.0 to 7.7), organic carbon content (0.58 to 27.32 g kg −1 ) and clay mineral contents (50 to 605 g kg −1 ), which are typical of tropical soils. Mesotrione residues were observed across all soil column layers (0-30 cm) in all evaluated soils by simulating 200 mm of water for 48 h. The application of mesotrione, alone or in a mixture, does not influence the leaching of this herbicide. Leaching of mesotrione ranged from low (up 15 cm) to very high (up 30 cm and leachate) in the tropical soils and may pose a potential groundwater contamination risk. In sand and loamy sand soil, the mesotrione was quantified in the leachate at all sampling times as above 80% of the amount initially applied. Thus, mesotrione application without the prior knowledge of the soil physical and chemical properties can result in inefficient weed control on field condition due to high leaching potentials.

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“…Due to its long persistence in the soil, this herbicide can invalidate the growth of sensitive plants for a long time after its application, depending on the applied dose and the edaphoclimatic conditions (Vivian et al, 2006). In addition to being persistent, sulfentrazone is mobile in the soil and has high leaching potential (Paraíba et al, 2003;Martinez et al, 2008, Passos et al, 2015, being able to reach groundwater.…”

Section: Introductionmentioning

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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Leaching of sulfentrazone in soils of reforestation in Brazil

Cited by 16 publications

References 13 publications

Leaching of Sulfentrazone in Soils from the Sugarcane Region in the Northeast Region of Brazil

Leaching of Sulfentrazone in Soils from the Sugarcane Region in the Northeast Region of Brazil

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

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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