title: Concentration of radiocaesium in rice and irrigation water, and soil management practices in Oguni, Date, Fukushima.
abstract: The concentration of radiocaesium ((134) Cs and (137) Cs) in brown rice collected from Oguni, Date, Fukushima in 2011 was over 500 Bq kg(-1) , which was the provisional regulation value in 2011, and rice cultivation was prohibited in 2012. Rice culture was resumed following the application of K fertilizer as a countermeasure in 2013. The concentration of (137) Cs in soils and irrigation water in 2013 was in the range of 1200 to 4000 Bq kg(-1) (n = 31) and 0.078 to 1.1 Bq L(-1) (n = 7), respectively. The concentration of (137) Cs in the dissolved fraction in irrigation water filtered with 0.45 µm pore-size membrane filter was a relatively constant at 0.019 to 0.038 Bq L(-1) (n = 7). The concentration of (137) Cs in brown rice cultivated in the paddy fields after implementing the countermeasure was 1.1 to 24 Bq kg(-1) dry weight (n = 29), which was lower than the Standard Limits (100 Bq kg(-1) ). However, the concentration of Cs in rice cultivated under a similar agricultural management as in 2011 and prior to the Tokyo Electric Power Company Holdings' (TEPCO) Fukushima accident was over the Standard Limits. Integr Environ Assess Manag 2016;12:659-661. © 2016 SETAC.
authors.affiliation: Institute of Environmental Radioactivity, Fukushima University, Fukushima, Japan. hirot@ipc.fukushima-u.ac.jp.
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Tsukada
authors.affiliation: Fukushima Future Center for Regional Revitalization, Fukushima University, Fukushima, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Ohse
mesh_terms: D057914:Agricultural Irrigation; D000383:Agriculture / Q000379:methods*; D002588:Cesium Radioisotopes / Q000032:analysis*; D062406:Fukushima Nuclear Accident; D012275:Oryza / Q000737:chemistry; D011834:Radiation Monitoring; D012990:Soil Pollutants, Radioactive / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D012990:Soil Pollutants, Radioactive
keywords: Brown rice; Irrigation water; Potassium fertilizer; Radiocaesium; Soil