Effect of Exogenous Carbon on Movement of Simazine and 2,4‐D in Soils

Cox, L.; Cecchi, A. M.; Celis, R.; Hermosı́n, M.C.; Koskinen, William C.; Cornejo, J.

doi:10.2136/sssaj2001.1688

Cited by 91 publications

(54 citation statements)

References 42 publications

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“…Soil amendments like olive mill residues and winery wastes have been shown to influence other soil pesticide processes like leaching and degradation (Cox et al 2001;Thevenot et al 2009). Adding compost to soils was generally shown to decrease herbicide mineralization and to favor the stabilization of herbicide residues (Barriuso et al 1997).…”

Section: Changes In the Transport Properties Versus Collapse Of The Amentioning

confidence: 99%

“…The term Bbioavailability^refers to the fraction of a chemical in soil that can be taken up by living organisms or the degree to which a compound is free to move to an organism (Stokes et al 2005). The environmental fate of pesticides in soils is influenced by the addition of exogenous carbon (compost, biochar, or activated carbon), thereby increasing the organic matter content of the soil and consequently affecting sorption and transport of many organic pollutants in soils (Barriuso et al 1997;Cox et al 2001;Beesley et al 2010;Huang et al 2013;Marchal et al 2013). Several studies have shown that the addition of exogenous carbon results in a decrease in groundwater contamination by leaching (Sánchez-Camazano et al 1997;Cox et al 2000).…”

Section: Introductionmentioning

confidence: 99%

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Compost addition reduces porosity and chlordecone transfer in soil microstructure

Woignier

Clostre²,

Fernandes³

et al. 2015

Environ Sci Pollut Res

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Chlordecone, an organochlorine insecticide, pollutes soils and contaminates crops and water resources and is biomagnified by food chains. As chlordecone is partly trapped in the soil, one possible alternative to decontamination may be to increase its containment in the soil, thereby reducing its diffusion into the environment. Containing the pesticide in the soil could be achieved by adding compost because the pollutant has an affinity for organic matter. We hypothesized that adding compost would also change soil porosity, as well as transport and containment of the pesticide. We measured the pore features and studied the nanoscale structure to assess the effect of adding compost on soil microstructure. We simulated changes in the transport properties (hydraulic conductivity and diffusion) associated with changes in porosity. During compost incubation, the clay microstructure collapsed due to capillary stresses. Simulated data showed that the hydraulic conductivity and diffusion coefficient were reduced by 95 and 70% in the clay microstructure, respectively. Reduced transport properties affected pesticide mobility and thus helped reduce its transfer from the soil to water and to the crop. We propose that the containment effect is due not only to the high affinity of chlordecone for soil organic matter but also to a trapping mechanism in the soil porosity.

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Section: Changes In the Transport Properties Versus Collapse Of The Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compost addition reduces porosity and chlordecone transfer in soil microstructure

Woignier

Clostre²,

Fernandes³

et al. 2015

Environ Sci Pollut Res

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show abstract

“…4; Table 3), which agrees with the results observed in the sorption and degradation studies (Table 2). Thus, the herbicide-WSOC interaction might be in part responsible for the greater diuron persistence in these amended soils as a consequence of the formation of stable complexes which also protected herbicide molecules from soil microorganisms (Cox et al, 2001).…”

Section: Leaching Studiesmentioning

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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“…Degradation and sorption are key processes affecting the environmental fate and transport of weak acid herbicides in soils (Cox et al 2001;Celis et al 2005;Sørensen et al 2006). Sorption, which controls herbicide concentrations in the soil solution, is often found to limit herbicide degradation in soil by reducing its concentrations in the aqueous solution (Jensen et al 2004;Dyson et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Environmental Fate of the Herbicide MCPA in Two Soils as Affected by the Presence of Wheat Ash

Hiller

Bartaľ

Milicka

et al. 2008

Water Air Soil Pollut

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This study was conducted to evaluate the environmental fate processes of the herbicide (4-chloro-2-methylphenoxy)acetic acid (MCPA) in agricultural soils in the presence and absence of ash originating from the burning of wheat residue. The ash-amended soils (1% ash by weight) were approximately 8-16 times more effective than the ash-free soils in sorbing MCPA. The desorption results showed that 40-78% of initially sorbed MCPA were desorbed in both soils, depending on the initial MCPA concentration in solution. Addition of ash to soils decreased the desorption of MCPA by approximately 20%. Degradation of MCPA was substantially reduced in the presence of the ash. A 6-week incubation resulted in 50-85% of MCPA microbially degraded in ash-amended soils, as compared to >85-100% in ashfree soils under the same conditions.

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Effect of Exogenous Carbon on Movement of Simazine and 2,4‐D in Soils

Cited by 91 publications

References 42 publications

Compost addition reduces porosity and chlordecone transfer in soil microstructure

Compost addition reduces porosity and chlordecone transfer in soil microstructure

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

Environmental Fate of the Herbicide MCPA in Two Soils as Affected by the Presence of Wheat Ash

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