Abstract
In this paper, the authors treat the impact of peat amendment on sorption and leaching of fungicides penconazole and flusilazole in two Algerian topsoil samples (Misserghine and Es-Senia). The batch equilibration technique was applied for adsorption experiments, and leaching was tested through soil column simulated experiments under laboratory conditions. Adsorption data fitted well to the Freundlich and linear models, showing the higher adsorption capacity of the Es-Senia soil for both fungicides, the order of sorption being flusilazole > penconazole. Organic amendments increased the adsorption of both fungicides especially for the soil with the lower organic matter (OM) content, obtaining a good correlation of this parameter withKf,thus implying that OM is the principal soil parameter governing fungicides adsorption. Results of soil column experiments indicated that peat amendment decreased leaching of both pesticides in the soils studied. So, the use of organic addition might be an effective management practice for controlling potential pollution of penconazole and/or flusilazole to the environment.
Highlights
Algeria is a country with great environmental challenges, among which we can mention soil erosion, desertification, hydrocarbons spills and toxic sludge from refineries, and fertilizer and pesticide runoff that lead to the pollution of Mediterranean waters [1], forcing this fact to Algeria to cooperate with other nations in protecting the sea from pollution and degradation
Two main aspects have been considered: on one hand, the great environmental problem that affects the soils from the northern zone of Algeria, such as those selected in this study, and on the other hand, the lack of information about the adsorption behavior of the fungicides
Knowing that the environment behavior of nonionic pesticides such as sorption, degradation, and migration maybe influenced by the organic matter (OM) amendments, we have considered it useful to investigate the influence of adding different percentages of a commercial peat amendment on the sorption and mobility processes of flusilazole and penconazole in two soils located in the Algerian area, with a high potential risk of contamination, and provide an effective field management practice for preventing potential pollution of these fungicides to environment
Summary
Effect of Peat Addition on Sorption and Leaching of Triazole Fungicides in Oran Soils. Kahina Aıt Hammi ,1,2 Elıas Nieto-Latorre, Marıa D. The authors treat the impact of peat amendment on sorption and leaching of fungicides penconazole and flusilazole in two Algerian topsoil samples (Misserghine and Es-Senia). Adsorption data fitted well to the Freundlich and linear models, showing the higher adsorption capacity of the Es-Senia soil for both fungicides, the order of sorption being flusilazole > penconazole. Results of soil column experiments indicated that peat amendment decreased leaching of both pesticides in the soils studied. The use of organic addition might be an effective management practice for controlling potential pollution of penconazole and/or flusilazole to the environment
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