title: Soil sorption and leaching of active ingredients of Lumax® under mineral or organic fertilization.
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.
authors.affiliation: Dipartimento di Agraria and Nucleo di Ricerca sulla Desertificazione (NRD), Università di Sassari, viale Italia 39, 07100 Sassari, Italy.
authors.forename: Maria Vittoria
authors.initials: MV
authors.lastname: Pinna
authors.affiliation: Dipartimento di Agraria and Nucleo di Ricerca sulla Desertificazione (NRD), Università di Sassari, viale Italia 39, 07100 Sassari, Italy.
authors.forename: Pier Paolo
authors.initials: PP
authors.lastname: Roggero
authors.affiliation: Dipartimento di Agraria and Nucleo di Ricerca sulla Desertificazione (NRD), Università di Sassari, viale Italia 39, 07100 Sassari, Italy.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Seddaiu
authors.affiliation: Dipartimento di Agraria and Nucleo di Ricerca sulla Desertificazione (NRD), Università di Sassari, viale Italia 39, 07100 Sassari, Italy. Electronic address: pusino@uniss.it.
authors.forename: Alba
authors.initials: A
authors.lastname: Pusino
mesh_terms: D000081:Acetamides / Q000032:analysis / Q000737:chemistry; D000327:Adsorption; D000818:Animals; D002417:Cattle; D002851:Chromatography, High Pressure Liquid; D003512:Cyclohexanones / Q000032:analysis / Q000737:chemistry; D005308:Fertilizers / Q000032:analysis*; D006540:Herbicides / Q000032:analysis / Q000737:chemistry*; D008372:Manure; D008903:Minerals / Q000737:chemistry; D009566:Nitrates / Q000737:chemistry; D000442:Octanols / Q000737:chemistry; D012987:Soil / Q000737:chemistry*; D012995:Solubility; D014227:Triazines / Q000032:analysis / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D000081:Acetamides; D003512:Cyclohexanones; D005308:Fertilizers; D006540:Herbicides; D008372:Manure; D008903:Minerals; D009566:Nitrates; D000442:Octanols; D012987:Soil; D014227:Triazines; D014867:Water; C432907:mesotrione; C037565:terbutylazine; C051786:metolachlor
keywords: Entec®; Leaching; Lumax®; Organic fertilization; Sorption