title: No effect of digestate amendment on Cs-137 and Sr-90 translocation in lysimeter experiments.
abstract: The soil-plant transfer of Cs-137 and Sr-90 in different crops was determined with respect to the present-day amendment practice of using digestate from biogas fermenters. The studies were performed using large lysimeters filled with undisturbed luvisol monoliths. In contrast to the conservative tracer, Br-, neither of the studied radionuclides showed a significant vertical translocation nor effect of the applied digestate amendment compared to a non-amended control was found. Furthermore, no significant plant uptake was measured for both nuclides in wheat or oat as indicated by the low transfer factors between soil-shoot for Cs-137 (TF 0.001-0.010) and for Sr-90 (0.10-0.51). The transfer into nutritionally relevant plant parts was even lower with transfer factors for soil-grain for Cs-137 (TF 0.000-0.001) and for Sr-90 (0.01-0.06). Hence, the amendment with biogas digestate is unfortunately not an option to further reduce plant uptake of these radionuclides in agricultural crops, but it does not increase plant uptake either.
authors.affiliation: Agrosphere Institute (IBG-3)(Taiz, 2006 #36), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany.
authors.forename: Khalid
authors.initials: K
authors.lastname: Mehmood
authors.affiliation: Agrosphere Institute (IBG-3)(Taiz, 2006 #36), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany.
authors.forename: Anne E
authors.initials: AE
authors.lastname: Berns
authors.affiliation: Agrosphere Institute (IBG-3)(Taiz, 2006 #36), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Pütz
authors.affiliation: Sustainable Campus (ZC), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Burauel
authors.affiliation: Agrosphere Institute (IBG-3)(Taiz, 2006 #36), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany.
authors.forename: Harry
authors.initials: H
authors.lastname: Vereecken
authors.affiliation: Institute of Safety and Radiation Protection (S), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany.
authors.forename: Thorsten
authors.initials: T
authors.lastname: Opitz
authors.affiliation: Institute of Safety and Radiation Protection (S), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany.
authors.forename: Myroslav
authors.initials: M
authors.lastname: Zoriy
authors.affiliation: Agrosphere Institute (IBG-3)(Taiz, 2006 #36), Forschungszentrum Jülich GmbH, Leo-Brandt-Strasse, 52425 Jülich, Germany. Electronic address: d.hofmann@fz-juelich.de.
authors.forename: Diana
authors.initials: D
authors.lastname: Hofmann
mesh_terms: D001673:Biodegradation, Environmental; D056804:Biofuels; D001692:Biological Transport; D002588:Cesium Radioisotopes / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism*; D018556:Crops, Agricultural / Q000378:metabolism; D012987:Soil / Q000737:chemistry*; D012990:Soil Pollutants, Radioactive / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism*; D013326:Strontium Radioisotopes / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D056804:Biofuels; D002588:Cesium Radioisotopes; D012987:Soil; D012990:Soil Pollutants, Radioactive; D013326:Strontium Radioisotopes
keywords: Agro-ecosystem; Oat; Radioactive contaminants; Transfer factor; Undisturbed soil monolith; Wheat