Potassium fertilization and 137Cs transfer from soil to grass and barley in Sweden after the Chernobyl fallout

Rosén, Klas; Vinichuk, M.

doi:10.1016/j.jenvrad.2013.12.019

Cited by 21 publications

(6 citation statements)

References 22 publications

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“…We demonstrated that K fertilisation could suppress the radiocesium root uptake by planted cypress seedlings in a forest highly contaminated with radiocesium due to the FDNPP accident. Previous reports had indicated that the suppressive effects of K fertilisation on the soil–plant radiocesium transfer varied with the amounts and frequency of fertilisation and the soil conditions receiving the fertilisation 15 , 25 . On the other hand, we may need to monitor the adverse effects of fertilisation on tree growth.…”

Section: Discussionmentioning

confidence: 99%

Potassium fertilisation reduces radiocesium uptake by Japanese cypress seedlings grown in a stand contaminated by the Fukushima Daiichi nuclear accident

Komatsu

Hirai

Nagakura

et al. 2017

Sci Rep

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We analysed suppressive effects of potassium (K) fertilisation on radiocesium (137Cs) uptake by hinoki cypress (Chamaecyparis obtusa) seedlings from soils contaminated after the Fukushima Daiichi Nuclear Power Plant accident. Three-year-old seedlings were planted in a clear-cut forest (ca. 4 ha) during June–July 2014, and potassium chloride fertiliser (83 kg K ha−1) was applied twice (August 2014 and April 2015). 137Cs concentrations in the needles in the fertilised plots were one-eighth of those in the control (unfertilised) plots at the end of the second growing season (October 2015). Our results clearly indicated that K fertilisation reduced radiocesium transfer from soil to planted cypress seedlings. A linear mixed model analysis revealed that 137Cs concentrations in the needles were significantly affected by 137Cs inventory in the soil (Bq m−2) adjacent to the sampled seedlings, exchangeable K concentrations in surface mineral soils (0–5 cm) and fertilisation. The exchangeable K concentrations in surface soils in October 2015 did not differ from those in August 2014 (before fertilisation) in the fertilised plots and in the control plots. These results suggested that the levels of exchangeable K would temporarily increase by fertilisation during the growing season, and radiocesium uptake by tree roots was suppressed.

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Section: Discussionmentioning

confidence: 99%

Potassium fertilisation reduces radiocesium uptake by Japanese cypress seedlings grown in a stand contaminated by the Fukushima Daiichi nuclear accident

Komatsu

Hirai

Nagakura

et al. 2017

Sci Rep

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“…Potassium is an essential plant nutrient with similar chemistry to caesium and hence suppresses the bioavailability of radiocaesium in the soil. This practice has been used as a countermeasure in areas significantly contaminated by radiocaesium, including Fukushima Prefecture [30,41,42], some European countries following the Chernobyl accident [43] and the Marshall Islands [44]. For certain food and feed crops growing in temperate climate soils (Europe and Japan), a reduction in 137 Cs uptake by a factor of about 2-5 has been observed after potassium amendment of the soil [42,43].…”

Section: Factors Affecting Fruit Radiocaesium Cr Valuesmentioning

confidence: 99%

“…This practice has been used as a countermeasure in areas significantly contaminated by radiocaesium, including Fukushima Prefecture [30,41,42], some European countries following the Chernobyl accident [43] and the Marshall Islands [44]. For certain food and feed crops growing in temperate climate soils (Europe and Japan), a reduction in 137 Cs uptake by a factor of about 2-5 has been observed after potassium amendment of the soil [42,43]. A more pronounced effect has been observed for the naturally potassium-poor coral sand soils of the Marshall Islands, where the addition of potassium to the soil resulted in a factor of 20 reduction in fruit 137 Cs activity concentrations [44].…”

Section: Factors Affecting Fruit Radiocaesium Cr Valuesmentioning

confidence: 99%

Updated soil to fruit concentration ratios for radiocaesium compiled under the IAEA MODARIA II Programme

Doering¹,

Carini

Sato

et al. 2022

J. Radiol. Prot.

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Under the International Atomic Energy Agency (IAEA) Modelling and Data for Radiological Impact Assessments (MODARIA II) Programme, Working Group 4 activities included collating radionuclide transfer data from Japan following the Fukushima Daiichi Nuclear Power Plant accident and separately collating concentration ratio (CR) data for root uptake of radionuclides by crops grown in tropical and arid climates. In this paper, the newly compiled radiocaesium CR data for fruit from Japan, tropical and arid climates have been combined with the data originally compiled for the IAEA Technical Reports Series No. 472 (TRS 472) and additional data identified from the literature to produce an enhanced MODARIA II dataset of fruit radiocaesium CR values. Statistical analysis of the MODARIA II dataset by climate class (based on the Köppen–Geiger climate classification) indicated that the CR values for tropical climates were significantly higher (p < 0.05) than those for arid, temperate and cold climates. Statistical analysis of the MODARIA II dataset by soil group (based on soil texture) indicated that the CR values for coral sand soil (tropical climates only) and organic soil (temperate climates only) were significantly higher (p < 0.05) than those for the clay, loam and sand soil groups. Statistical analysis of the MODARIA II dataset by plant group (based on plant morphology) indicated that the CR values for non-woody trees (tropical climate bias) were significantly higher (p < 0.05) than those for herbaceous plants, shrubs and woody trees. Comparison of the MODARIA II dataset with original TRS 472 values showed only small changes in the fruit radiocaesium CR values for herbaceous plants and shrubs in temperate climates. There was a decrease in the CR values for woody trees in temperate climate across all soil groups. There was also a decrease in the CR values for tropical climates for all comparable soil groups.

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“…For grass crops, the concentration of radiocaesium in the biomass is likely to be highest in the first year after fallout. However, the transfer to the second cut can also be high, due to contributions from the previous seasons Rosén and Vinichuk, 2014).…”

Section: Introductionmentioning

confidence: 99%

Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover

Bengtsson¹,

Gärdenäs²,

Eriksson³

et al. 2014

Science of The Total Environment

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"NOTICE: this is the author's version of a work that was accepted for publication in . Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in SCIENCE OF THE TOTAL ENVIRONMENT, [VOL 497-498 (2014) AbstractThe aims of this study were to assess the potential radioactive contamination of fodder in the case of accidental radionuclide fallout, and to analyse the relationship between interception and retention of radionuclides as a function of biomass and Leaf Area Index (LAI). The interception and the retention of wet deposited 134 Cs and 85 Sr in ley (a mixture of grass and clover) were measured after artificial wet deposition in a field train in Uppsala (eastern central Sweden). The field trial had a randomised block design with three replicates. 134Cs and 85 Sr were deposited at six different growth stages during two growing seasons (20101 and 2011) using a rainfall simulator. The biomass was sampled in the centre of each parcel 2 to 3 h after deposition and at later growth stages (1 to 5) during the growing season. The above ground biomass and LAI were measured as well.The interception of radionuclides by the ley was largest at the late growth stages; the spike and tassel/flowering (code 5:6) in the 1 st year, and at flowering/initial flowering (code 6:5) in the 2 nd year. There was a correlation between radionuclide interception and above ground biomass, as well with LAI, for both radionuclides in both years. The highest activity concentrations of both radionuclides were measured after deposition at the late growth stages and were found to be higher in the 2 nd year. There weathering half-lives were shorter at the earlier growth stages than at the later growth stages for both radionuclides. For the magnitude of deposition chosen in our experiment, it can be concluded that the above ground biomass is a good predictor and the LAI a more uncertain predictor of the interception of radiocaesium and radiostrontium by ley grass and clover.

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Potassium fertilization and 137Cs transfer from soil to grass and barley in Sweden after the Chernobyl fallout

Cited by 21 publications

References 22 publications

Potassium fertilisation reduces radiocesium uptake by Japanese cypress seedlings grown in a stand contaminated by the Fukushima Daiichi nuclear accident

Potassium fertilisation reduces radiocesium uptake by Japanese cypress seedlings grown in a stand contaminated by the Fukushima Daiichi nuclear accident

Updated soil to fruit concentration ratios for radiocaesium compiled under the IAEA MODARIA II Programme

Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover

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