Mobilidade do sulfentrazone em Nitossolo Vermelho e em Neossolo Quartzarênico

Rossi, Caio Vitagliano Santi; Alves, Paulo Roberto Arruda; Júnior, José Marques

doi:10.1590/s0100-83582003000100014

Cited by 10 publications

(6 citation statements)

References 8 publications

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“…Sintomas da presença de resíduos de sulfentrazone foram observados na profundidade de 10 a 20 cm, apenas para o tratamento com aplicação em 2003/2004, na primeira coleta de solo, aos 467/24 DAA, respectivamente. Embora Rossi et al (2003) tenham avaliado em colunas de PVC a mobilidade do sulfentrazone em condições laboratoriais, os autores também constataram pequena mobilidade do herbicida em Nitossolo Vermelho (até 7,5 cm) e em Neossolo Quartzarênico (até 12,5 cm), mesmo quando submetidos a 90 mm de precipitação pluvial. Já segundo Benedito et al (1999), o sulfentrazone foi lixiviado para camadas de profundidade superior a 10 cm no perfil do solo, quando submetido à irrigação de 20 mm, 24 horas após a sua pulverização.…”

Section: Methodsunclassified

Persistência de sulfentrazone em Argissolo Vermelho-Amarelo cultivado com cana-de-açúcar

et al. 2006

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RESUMO -Avaliou-se neste trabalho a persistência do sulfentrazone em Argissolo VermelhoAmarelo (PVA) e seu efeito na microbiota do solo cultivado com cana-de-açúcar. Os tratamentos constituíram-se de aplicações do herbicida somente no ano de 2003, em 2003 467/24, 517/74, 550/107 and 640/197 days after application (DAA), were studied in the split-plots and split-split-plots, respectively. Indirect quantification of the residues was accomplished by bioassay and C-CO 2 evolution together with microbial biomass (CBM)

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Section: Methodsunclassified

Persistência de sulfentrazone em Argissolo Vermelho-Amarelo cultivado com cana-de-açúcar

et al. 2006

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“…These data express the mobility of sulfentrazone is subject to many variables in field, however, it is understood that in general the sulfentrazone behavior can be mainly expressed by rainfall and soil physical characteristics in which is the herbicide. Also Rossi et al (2003) found that the mobility of sulfentrazone had different behavior between studied soil classes, because under a 90 mm rainfall, sulfentrazone reached 12.5 cm depth in columns with Typic Quartzipsamment, as observed and under the same rainfall, sulfentrazone reached 7.5 cm depth in columns with red nitosol. Although soil moisture content may change the distribution of sulfentrazone between the solution and sorbed phases, researchers showed that sulfentrazone dissipation also showed temperature dependency, which suggests that the halflife value for sulfentrazone at surface of tropical soils may be shorter (Martinez et al, 2010).…”

Section: Resultsmentioning

confidence: 51%

“…Rossi et al (2005b) observed that with increased saturation of the soil, there was an increase in the percolation of the product profile of a soil classified as Chernosol in which the herbicidal activity was observed through bioindicator plants to a depth of 17.5 cm under a rainfall of 90 mm. Studies conducted by Rossi et al (2003) found that the survival of sorghum plants in soil treated with sulfentrazone decreases with increased depth and increased as rainfall. It was observed a tendency to drag and accumulation of this herbicide in the soil profile as rainfall.…”

Section: Resultsmentioning

confidence: 99%

Leaching of sulfentrazone herbicide in soils with different textures

Silva¹,

Queiroz²,

Martins³

2016

Científica

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The objective of this study was to evaluate the leaching potential of sulfentrazone herbicide through bioindicator plants after the occurrence of natural rainfall in soils with clayey and sandy textures. The experimental design was completely randomized in a 3 x 8 factorial with four replications, with three levels of rainfall (30-40, 60-80 and 100-120 mm) and eight depth of soil profile (0-3, 3-6, 6-9, 9-12, 12-15, 15-20, 20-25 and 25-30 cm). The collections of samples occurred after sulfentrazone application at doses of 800 g ha-1 and 600 g ha-1 for the clayey and sandy soils, respectively, and subsequent accumulation of rainfalls. For the collection of soil samples, PVC columns with 30 cm and 15 cm in diameter were introduced in soil profile. The columns were carefully removed by digging around him and maintaining the original soil integrity during the collection. Subsequently, the columns were separated with cross section for the sowing of bioindicator species, sorghum and Bidens pilosa. After sowing, for evaluations of bioindicator plants in columns, it was adopted range of 0% to 100% of phytotoxicity, at 5, 7, 10 and 12 days after sowing. Leaching of sulfentrazone was dependent on rain accumulation and soil texture. In larger rain accumulations, sulfentrazone can be found deeper in soils of sandy textures. Sorghum was more suitable as bioindicator plant to demonstrate the herbicide presence at greater depths.

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“…According to Liu et al (2010), in soils with little organic matter and little clay, the percolation of herbicides can occur, making them available Leaching of sulfentrazone in soils from the sugarcane region ... in the soil solution and making it amenable to transportation to the water table. Rossi et al (2003), working with columns and using an unstructured quartzarenic neosol, have detected poisoning by sulfentrazone in the indicator plants at 22.5 cm and 30 cm deep, respectively, for water depths of 60 and 90 mm. Therefore, it is assumed in this work that if water depth higher than 60 mm were applied, herbicide mobility would have been even greater.…”

Section: Resultsmentioning

confidence: 99%

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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Mobilidade do sulfentrazone em Nitossolo Vermelho e em Neossolo Quartzarênico

Cited by 10 publications

References 8 publications

Persistência de sulfentrazone em Argissolo Vermelho-Amarelo cultivado com cana-de-açúcar

Persistência de sulfentrazone em Argissolo Vermelho-Amarelo cultivado com cana-de-açúcar

Leaching of sulfentrazone herbicide in soils with different textures

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

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