The study describes the soil sorption of the herbicide Lumax®, composed of S-metolachlor (MTC), terbuthylazine (TBZ), and mesotrione (MST), as influenced by mineral and organic fertilizers. The investigation was performed on a sandy soil of an agricultural area designated as a Nitrate Vulnerable Zone, where mineral and organic fertilizers were applied for many years. Two organic fertilizers, cattle manure and slurry, respectively, and a mineral fertilizer with a nitrification inhibitor, Entec®, were compared. According to the experiments, performed with a batch method, the sorption conformed to Freundlich model. The extent of sorption of Lumax® ingredients was closely related to their octanol–water partition coefficient Kow. The respective desorption was hysteretic. Leaching trials were carried out by using water or solutions of DOM or Entec® as the eluants. Only the elution with the mineral fertilizer promoted the leaching of Lumax® active ingredients.

Soil sorption and leaching of active ingredients of Lumax® under mineral or organic fertilization / Pinna, Maria Vittoria; Roggero, Pier Paolo; Seddaiu, Giovanna; Pusino, Alba. - In: CHEMOSPHERE. - ISSN 0045-6535. - 111:(2014), pp. 372-378. [10.1016/j.chemosphere.2014.03.124]

Soil sorption and leaching of active ingredients of Lumax® under mineral or organic fertilization

Pinna, Maria Vittoria;ROGGERO, Pier Paolo;SEDDAIU, Giovanna;PUSINO, Alba
2014

Abstract

The study describes the soil sorption of the herbicide Lumax®, composed of S-metolachlor (MTC), terbuthylazine (TBZ), and mesotrione (MST), as influenced by mineral and organic fertilizers. The investigation was performed on a sandy soil of an agricultural area designated as a Nitrate Vulnerable Zone, where mineral and organic fertilizers were applied for many years. Two organic fertilizers, cattle manure and slurry, respectively, and a mineral fertilizer with a nitrification inhibitor, Entec®, were compared. According to the experiments, performed with a batch method, the sorption conformed to Freundlich model. The extent of sorption of Lumax® ingredients was closely related to their octanol–water partition coefficient Kow. The respective desorption was hysteretic. Leaching trials were carried out by using water or solutions of DOM or Entec® as the eluants. Only the elution with the mineral fertilizer promoted the leaching of Lumax® active ingredients.
Soil sorption and leaching of active ingredients of Lumax® under mineral or organic fertilization / Pinna, Maria Vittoria; Roggero, Pier Paolo; Seddaiu, Giovanna; Pusino, Alba. - In: CHEMOSPHERE. - ISSN 0045-6535. - 111:(2014), pp. 372-378. [10.1016/j.chemosphere.2014.03.124]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/60033
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