Pesticide sorption on soils treated with evergreen oak biomass at different humification stages

Martinez-Inigo, M.J.; Almendros, G.

doi:10.1080/00103629209368699

Cited by 24 publications

(12 citation statements)

References 9 publications

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“…2). The increase in pesticide sorption by organic amendment addition to soil has been previously reported by several authors and attributed to the high sorptive capacity of the insoluble organic matter added to the soil [10,12,[20][21][22]. It could be interesting, however, to compare the experimental sorption isotherms measured for the different soil-LSS mixtures with the corresponding sorption isotherms calculated assuming an independent sorption behaviour for the soil and LSS in the mixtures.…”

Section: Resultsmentioning

confidence: 92%

Effect of liquid sewage sludge addition on atrazine sorption and desorption by soil

1998

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Liquid sewage sludge (LSS) addition to soil incorporates both insoluble suspended organic material and large amounts of dissolved organic matter (LSSDOM) which can influence the sorption-desorption behaviour of pestieides by soil constituents. Batch sorption isotherm techniques were used to determine the relative effect of the insoluble and dissolved organic matter from a LSS on the sorption and desorption of the herbicide atrazine by soil. Atrazine sorption and desorption isotherms were obtained on soil, LSS, LSS-amended soil, and LSSDOM-pretreated soil and described by the Frenndlich equation. The overall effect of LSS addition to soil (insoluble and dissolved organic matter) was to increase atrazine sorption, due to the high sorption capacity of the added insoluble organic matter. In contrast, LSSDOM, which was mainly constituted by low molecular weight molecules, decreased atrazine sorption by the soil. No evidences for stable interactions in solution between LSSDOM and atrazine were found, thus suggesting processes taking place at the soil/solution interface, such as competition for sorption sites on the soil surface, are the main responsible for the observed decrease in atrazine sorption by LSSDOM. Desorption of atrazine from soil was also enhanced by LSSDOM, but this effect was highly reduced when the soil had been pretreated with LSS (insoluble and soluble organic matter) or with LSSDOM alone. In these cases, interactions of LSSDOM with the soil surface have already taken place before the desorption experiment and the LSSDOM effects during desorption are less evident. The results of this work suggest that LSSDOM appfied to soils may enhance the risk of groundwater contamination by promoting atrazine desorption from soil, especially when the soil surfaces are free ofLSSDOM.

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Section: Resultsmentioning

confidence: 92%

Effect of liquid sewage sludge addition on atrazine sorption and desorption by soil

1998

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“…Therefore, organic matter transformation following field application may also modify the further interactions of herbicides with the amended soils, so that it is of interest to know the effect of aging on the transformation of the organic amendments added to soils, and on pesticide behaviour (Martinez-Iñigo and Almendros, 1992;Morillo et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Direct and residual effects on diuron behaviour and persistence following two-phase olive mill waste addition to soil: Field and laboratory experiments

et al. 2010

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“…The dynamics of exogenous OM transformations may affect the accessibility of the sorption sites on the native soil (22). Therefore, it is also of great interest to know the effect of aging on the transformation of the exogenous OM added to soils and its behavior in sorption-desorption processes of pesticides.…”

Section: Introductionmentioning

confidence: 99%

Effect of Two Organic Amendments on Norflurazon Retention and Release by Soils of Different Characteristics

Morillo

Maqueda

Reinoso

et al. 2002

Environ. Sci. Technol.

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The influence of two organic amendments on norflurazon sorption-desorption processes in four soils with very different physicochemical characteristics was studied in laboratory experiments to evaluate the potential leaching of this pesticide through organic fertilized soils. Sorptiondesorption experiments were performed on original soils and on a mixture of these soils with urban waste compost (SUW) and a commercial amendment from olive-mill wastes (OW), at a rate of 6.25% (w/w). These mixtures were used immediately after preparation and after aging for 2 months. Norflurazon was analyzed by using a HPLC method. Norflurazon retention in original soils was related not only to the organic matter (OM) content but also to mineral surfaces present in soils. Norflurazon sorption increases largely after amendment in soils with low OM content, but the addition of exogenous OM to soils with medium OM content and/or other available adsorptive surfaces did not significantly affect norflurazon sorption. Even in some cases pesticide sorption decreases, due to the blocking of the mineral and organic soil surfaces with the amendment added. Transformation of exogenous OM during incubation depends both on the amendment added and on the type of soil and can affect sorption-desorption behavior of the soils surfaces in different manner, due to the modification of their hydrophobic-hydrophilic characteristics. Norflurazon desorption from original soils showed hysteresis in all cases, but it was not affected or even decreased in amended soils. It was a nonexpected behavior, especially in sandy soil, since it is generally assumed that a higher sorption always implies a lower mobility in soils. Norflurazon sorption must be taking place on very low affinity sites on exogenous OM through weak bindings, from which the pesticide can be easily desorbed. The application to soils of the organic amendments used in the present study could not be accepted to reduce norflurazon losses due to leaching processes.

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Pesticide sorption on soils treated with evergreen oak biomass at different humification stages

Cited by 24 publications

References 9 publications

Effect of liquid sewage sludge addition on atrazine sorption and desorption by soil

Effect of liquid sewage sludge addition on atrazine sorption and desorption by soil

Direct and residual effects on diuron behaviour and persistence following two-phase olive mill waste addition to soil: Field and laboratory experiments

Effect of Two Organic Amendments on Norflurazon Retention and Release by Soils of Different Characteristics

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