Sorption of radiolabelled glyphosate on biochar aged in contrasting soils

Sharma, Aman; Lai, Donna

doi:10.1080/03601234.2018.1531658

“…The adsorption behaviour of glyphosate has been reported in Australian soil systems (Gerritse, Beltran et al 1996), however, for updated information on glyphosate behaviour, experiments were conducted at the University of Sydney, Australia. The adsorption behaviour of glyphosate in the presence and absence of biochar have been previously reported (Sharma and Lai 2019, Sharma 2020, Sharma, Singh et al 2021, however, the present article would elucidate in detail the mechanism for the maximum adsorption of glyphosate in the Oxisol soil system in the presence of biochar.…”

Section: Introductionmentioning

confidence: 70%

“…The batch experiments were repeated and the data were pooled as there was no signi cant interaction between treatments and experiments observed. The data were analyzed using Analysis of variance (SAS 9.4) and the means were separated by Tukey's 95% con dence intervals (Sharma and Lai 2019). revealed that the surface charge in the Oxisol soil system was higher than the charge in the Oxisol soil system without char.…”

Section: Discussionmentioning

confidence: 99%

Surface Charge governs the adsorption behaviour of glyphosate in Australian Oxisol Soil System

Sharma

¹

2021

Preprint

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Glyphosate adsorption pattern is important for determining its environmental fate. Oxisol soil systems adsorb maximum glyphosate in the presence of biochar, however, the mechanism was not known. This article provides information concerning the role of surface charge in the case of Oxisol soil systems. Batch sorption experiments were conducted at the University of Sydney, Australia. Potentiometric titrations were done to calculate the surface charge in the case of Oxisol soil systems. Maximum adsorption of glyphosate in the Oxisol soil systems in the presence of char was due to an increase in net positive surface charge. This finding is of great importance to understanding the mechanism of herbicide soil interactions.

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“…The adsorption behaviour of glyphosate has been reported in Australian soil systems (Gerritse, Beltran et al 1996), however, for updated information on glyphosate behaviour, experiments were conducted at the University of Sydney, Australia. The adsorption behaviour of glyphosate in the presence and absence of biochar have been previously reported (Sharma and Lai 2019, Sharma 2020, Sharma, Singh et al 2021, however, the present article would elucidate in detail the mechanism for the maximum adsorption of glyphosate in the Oxisol soil system in the presence of biochar.…”

Section: Introductionmentioning

confidence: 82%

“…This experiment was part of PhD study at the University of Sydney (Fang, Singh et al 2014, Sharma and Lai 2019, Sharma 2020. As the Oxisol soil system showed maximum adsorption of glyphosate, potentiometric titration was used as a tool for surface charge determination (Lutzenkirchen, Preocanin et al 2012) in this system.…”

Section: Methodsmentioning

confidence: 99%

Surface Charge Governs the Adsorption Behaviour of Glyphosate in the Australian Oxisol Soil System

Sharma

¹

2022

Communications in Soil Science and Plant Analysis

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Glyphosate adsorption pattern is important for determining its environmental fate. Oxisol soil systems adsorb maximum glyphosate in the presence of biochar, however, the mechanism was not known. This article provides information concerning the role of surface charge in the case of Oxisol soil systems.Batch sorption experiments were conducted at the University of Sydney, Australia. Potentiometric titrations were done to calculate the surface charge in the case of Oxisol soil systems. Maximum adsorption of glyphosate in the Oxisol soil systems in the presence of char was due to an increase in net positive surface charge. This nding is of great importance to understanding the mechanism of herbicide soil interactions.

show abstract

“…The batch experiments were repeated and the data were pooled as there was no signi cant interaction between treatments and experiments observed. The data were analysed using Analysis of variance (SAS 9.4) and the means were separated by Tukey's 95% con dence intervals (Sharma and Lai 2019). revealed that the surface charge in the Oxisol soil system was higher than the charge in the Oxisol soil system without char.…”

Section: Discussionmentioning

confidence: 99%

Surface Charge governs the adsorption behaviour of glyphosate in Australian Oxisol Soil System

Sharma

¹

2021

Preprint

Self Cite

0

View full text Add to dashboard Cite

Glyphosate adsorption pattern is important for determining its environmental fate. Oxisol soil systems adsorb maximum glyphosate in the presence of biochar, however, the mechanism was not known. This article provides information concerning the role of surface charge in the case of Oxisol soil systems. Batch sorption experiments were conducted at the University of Sydney, Australia. Potentiometric titrations were done to calculate the surface charge in the case of Oxisol soil systems. Maximum adsorption of glyphosate in the Oxisol soil systems in the presence of char was due to an increase in net positive surface charge. This finding is of great importance to understanding the mechanism of herbicide soil interactions.

show abstract

Sorption of radiolabelled glyphosate on biochar aged in contrasting soils

Cited by 7 publications

References 24 publications

Surface Charge governs the adsorption behaviour of glyphosate in Australian Oxisol Soil System

Surface Charge governs the adsorption behaviour of glyphosate in Australian Oxisol Soil System

Surface Charge Governs the Adsorption Behaviour of Glyphosate in the Australian Oxisol Soil System

Surface Charge governs the adsorption behaviour of glyphosate in Australian Oxisol Soil System

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