Multivariate analysis and multiple linear regression as a tool to estimate the behavior of hexazinone in Brazilian soils

Santos, Luiz Odonil Gomes dos; Souza, Matheus de Freitas; Chagas, Paulo Sérgio Fernandes das; Teófilo, T. M. S.; Formiga, Maria Alice Porto; Medeiros, Rita Cássia Araújo de; Silva, Daniel Valadão

doi:10.1007/s10661-019-7893-2

Cited by 10 publications

(2 citation statements)

References 39 publications

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“…This suggests that when hexazinone is used in a ternary mixture with diuron and sulfometuron-methyl, it exhibits greater leaching in LV soil compared to its isolated application. The high solubility of hexazinone in water (33,000 mg L −1 at 25 °C) increases the risk of leaching of this herbicide [ 38 ]. Furthermore, the pH of the LV soil (4.7), as used in this study, was higher than the pKa value of hexazinone (2.2).…”

Section: Resultsmentioning

confidence: 99%

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: Resultsmentioning

confidence: 99%

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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“…To account for and predict diuron adsorption-desorption dynamics as a function of the soil characteristics, multiple linear regression was performed with the Freundlich coefficient (K F ) as a dependent variable, and the MK, TH, and NZ soil properties as the independent variables. The performance of the multiple linear regression was evaluated using root mean square error (RMSE) (Equation 9) and coefficient of determination (R 2 ) as proposed by Dos Santos et al (2019) and Eqs. (10) and (11) were obtained.…”

Section: Effect Of Soil Properties On Adsorption/desorptionmentioning

confidence: 99%

Adsorption-desorption and leaching behavior of diuron on selected Kenyan agricultural soils

Muendo

Shikuku

Getenga

et al. 2021

Heliyon

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In this work, the adsorption-desorption dynamics of diuron in three typical Kenyan agricultural soils, Nzoia (NZ), Thika (TH) and Machakos (MK) was investigated. The equilibrium adsorption data, tested against three classical nonlinear adsorption isotherms, was best described by the Freundlich model. The Freundlich adsorption constant, (K F), increased in the order MK > TH > NZ soil. Additionally, the negative Gibb's free energy values indicate the adsorption processes were thermodynamically spontaneous and physical. Multiple linear regression analysis indicated that the adsorption-desorption behavior was controlled by the clay and phosphorus contents of the soil. Phosphorus negatively affected the adsorption of diuron and promoted desorption. The groundwater ubiquity score (GUS) indicated that diuron movement rating in MK soil was 'moderate' while the movement in TH and NZ soils was 'high'.

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Sorption kinetics of sulfometuron-methyl in different Brazilian soils

Pavão

Souza

Lins

et al. 2021

Environ Monit Assess

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Multivariate analysis and multiple linear regression as a tool to estimate the behavior of hexazinone in Brazilian soils

Cited by 10 publications

References 39 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

Adsorption-desorption and leaching behavior of diuron on selected Kenyan agricultural soils

Sorption kinetics of sulfometuron-methyl in different Brazilian soils

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