Leaching of Diuron, Hexazinone, and Sulfometuron-methyl Applied Alone and in Mixture in Soils with Contrasting Textures

Reis, Fabrícia Cristina dos; Tornisielo, Valdemar Luiz; Pimpinato, Rodrigo Floriano; Martins, Bianca Assis Barbosa; Filho, Ricardo Victória

doi:10.1021/acs.jafc.6b05127

Cited by 28 publications

(4 citation statements)

References 18 publications

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“…Studies have indicated that expansive clay minerals act as excellent natural adsorbents in sediments due to their active structural sites, such as exchangeable cations, hydrophobic surfaces, and Si-OH [ 29 ]. Other studies have reported that the isolated application of the analytical standard diuron remained most concentrated in the top 15 cm of both sandy and clayey soil depths [ 30 , 31 ], which is consistent with our findings.…”

Section: Resultssupporting

confidence: 93%

Herbicide Leaching in Soil with Different Properties: Perspectives from Commercial Formulations and Analytical Standards

de Medeiros,

Silva,

Teófilo

et al. 2024

Toxics

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The leaching of herbicides into the soil is essential to control germinating seeds and parts of vegetative weeds. However, herbicide transportation to deeper soil layers can result in groundwater contamination and, consequently, environmental issues. In this research, our objective was to investigate differences in herbicide leaching between commercial formulations and analytical standards using three different soils. Leaching experiments were carried out for diuron, hexazinone, and sulfometuron-methyl herbicides isolated and in binary and ternary mixtures. The herbicide residue quantification was performed by ultra-high-performance liquid chromatography coupled to a mass spectrometer (LC-MS/MS). Diuron had less mobility in soils and was retained in the most superficial layers. Hexazinone and sulfometuron-methyl were more mobile and leached into deeper layers. The leaching process was more intense for hexazinone and sulfometuron-methyl. The additives present in the commercial formulation favored the leaching in soils of diuron, hexazinone, and sulfometuron-methyl herbicides isolated and mixture compared to the analytical standard. This fact highlights the importance of considering these effects for the positioning of herbicides in the field to increase the efficiency of weed control and minimize the potential for environmental contamination.

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Section: Resultssupporting

confidence: 93%

Herbicide Leaching in Soil with Different Properties: Perspectives from Commercial Formulations and Analytical Standards

de Medeiros,

Silva,

Teófilo

et al. 2024

Toxics

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“…DUR is considered weakly to moderately mobile, being strongly retained in the topsoil but less retained in deeper regions. Dos Reis et al (2017) reported that 96.1% of DUR remained in the 0-5-cm soil layer after a rainfall simulation, whereas only 0.91% remained in the 5-10-cm soil layer, confirming its low mobility through the soil profile. DUR mobility is related to soil organic carbon content and soil texture (Landry et al, 2006).…”

Section: Environmental Occurrence and Toxicity Environmental Occurrencementioning

confidence: 94%

Emerging Strategies for the Bioremediation of the Phenylurea Herbicide Diuron

Zhang

Lin

et al. 2021

Front. Microbiol.

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Diuron (DUR) is a phenylurea herbicide widely used for the effective control of most annual and perennial weeds in farming areas. The extensive use of DUR has led to its widespread presence in soil, sediment, and aquatic environments, which poses a threat to non-target crops, animals, humans, and ecosystems. Therefore, the removal of DUR from contaminated environments has been a hot topic for researchers in recent decades. Bioremediation seldom leaves harmful intermediate metabolites and is emerging as the most effective and eco-friendly strategy for removing DUR from the environment. Microorganisms, such as bacteria, fungi, and actinomycetes, can use DUR as their sole source of carbon. Some of them have been isolated, including organisms from the bacterial genera Arthrobacter, Bacillus, Vagococcus, Burkholderia, Micrococcus, Stenotrophomonas, and Pseudomonas and fungal genera Aspergillus, Pycnoporus, Pluteus, Trametes, Neurospora, Cunninghamella, and Mortierella. A number of studies have investigated the toxicity and fate of DUR, its degradation pathways and metabolites, and DUR-degrading hydrolases and related genes. However, few reviews have focused on the microbial degradation and biochemical mechanisms of DUR. The common microbial degradation pathway for DUR is via transformation to 3,4-dichloroaniline, which is then metabolized through two different metabolic pathways: dehalogenation and hydroxylation, the products of which are further degraded via cooperative metabolism. Microbial degradation hydrolases, including PuhA, PuhB, LibA, HylA, Phh, Mhh, and LahB, provide new knowledge about the underlying pathways governing DUR metabolism. The present review summarizes the state-of-the-art knowledge regarding (1) the environmental occurrence and toxicity of DUR, (2) newly isolated and identified DUR-degrading microbes and their enzymes/genes, and (3) the bioremediation of DUR in soil and water environments. This review further updates the recent knowledge on bioremediation strategies with a focus on the metabolic pathways and molecular mechanisms involved in the bioremediation of DUR.

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“…Also, the combination of pesticides influences their impact on their leaching, adsorption, sorption, and desorption in the soil. Regarding this, in Brazil Dos Reis et al (2017) documented that the mixture of the herbicides sulfometuron methyl, Diuron and Hexazinone could promote changes in their respective behavior in the soil; in addition, they observed that Diuron has low mobility in the soil, since it remained in the upper layer, while Hexazinone leached heavily at deeper profiles.…”

Section: Pesticides and Their Impact On The Soil Ecosystemmentioning

confidence: 99%

Emerging Contaminants in Agriculture and Ways to Reduce them Emerging Contaminants in Agriculture

Pérez-Álvarez¹,

Ardisana²,

Magallanes-Tapia³

et al. 2023

OnLine Journal of Biological Sciences

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The accelerated development of modern agriculture in order to feed a growing world population is one of the main causes of contamination in soil, water, and air, causing diseases in animals and humans. Among the most common pollutants are nitrogenous fertilizers, pesticides, hydrocarbons, and nanomaterials. As more food is produced, pollution increases, making it necessary the transition to sustainable agriculture, in which organic agriculture and precision agriculture stand out as ways to reduce emerging pollutants together with bioremediation. This review paper addresses three of the most common emerging pollutants in agriculture (pesticides, nanomaterials, and polycyclic aromatic hydrocarbons), their general description, biological effect, toxicity, norms of the maximum permissible values in Mexico, and ways to reduce them. Pesticides, nanomaterials, and polycyclic aromatic hydrocarbons are contaminants that can remain in soils damaging the ecosystem so strategies to reduce their effects include physical and chemical methods, the substitution of polluting products for organic equivalents, the use of plants and microorganisms alone or in combination as remedial agents and more recently nanotechnology and genetic engineering. The need for more food for the growing population is up today and directly related to the generation of more pollutants, deeper studies are needed to improve the effectiveness of these strategies and/or reduce their costs, in search of cleaner productions. From this review paper is possible to conclude that most of the pesticides used in the fields can affect biota, or are incorporated into the water table, the application of nanomaterials in agriculture, despite its usefulness, has also become a source of pollution because they can remain in the soil for long periods and polycyclic aromatic hydrocarbons have poor solubility so their removal is particularly difficult. In Mexico, even taking into account the damage caused by the pollutants described, there are currently no clear norms of the maximum permissible values for them.

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Leaching of Diuron, Hexazinone, and Sulfometuron-methyl Applied Alone and in Mixture in Soils with Contrasting Textures

Cited by 28 publications

References 18 publications

Herbicide Leaching in Soil with Different Properties: Perspectives from Commercial Formulations and Analytical Standards

Herbicide Leaching in Soil with Different Properties: Perspectives from Commercial Formulations and Analytical Standards

Emerging Strategies for the Bioremediation of the Phenylurea Herbicide Diuron

Emerging Contaminants in Agriculture and Ways to Reduce them Emerging Contaminants in Agriculture

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