title: Mobility of four triazole fungicides in two Indian soils.
abstract: The sorption and downward mobility of four triazole fungicides, triadimefon, hexaconazole, penconazole and propiconazole, were studied in two Indian soils (New Delhi and Punjab). Punjab soil (organic carbon 0.4%) showed greater sorption capability for triazole fungicides than New Delhi soil (organic carbon 0.5%) and the order of sorption of triazoles in both soils was: penconazole > hexaconazole > propiconazole > triadimefon. Fungicides were more mobile in New Delhi soil columns than Punjab soil columns, and increasing the total water flux from 1 pore volume to 3 pore volumes further increased the transport to lower down in the column. Triadimefon showed maximum mobility while penconazole was the least mobile triazole fungicide. After percolating 3 pore volumes of water, triadimefon leached down to 25-30 cm depth in New Delhi soil and 15-20 cm in Punjab soil columns. Downward mobility of triazole fungicides was in order of their sorption results.
authors.affiliation: Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi 110 012, India. drneerasingh@yahoo.com
authors.forename: Neera
authors.initials: N
authors.lastname: Singh
mesh_terms: D000327:Adsorption; D005659:Fungicides, Industrial / Q000032:analysis*; D007194:India; D012989:Soil Pollutants / Q000032:analysis*; D014230:Triazoles / Q000032:analysis*
chemical_list: D005659:Fungicides, Industrial; D012989:Soil Pollutants; D014230:Triazoles