Rice uptake and distributions of radioactive 137Cs, stable 133Cs and K from soil

Tsukada, Hirofumi; Hasegawa, H.; Hisamatsu, Shun’ichi; Yamasaki, Shin‐ichi

doi:10.1016/s0269-7491(01)00199-3

Cited by 77 publications

(71 citation statements)

References 12 publications

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“…Radiocesium ( 134 Cs and 137 Cs) is assumed to be the radioactive material of most concern at present, considering the quantity released and its half-life. In 1997, Tsukada et al (2002Tsukada et al ( , 2005 performed experimental cultivation of rice in the Rokkasyo Village in Aomori prefecture and measured 137 Cs in the soil and in rice parts. The 137 Cs level for the dry soil was 4.4 Bq/kg and the most was assumed to have derived from the many atmospheric atomic bomb experiments performed during the 1950s and 1960s.…”

Section: Introductionmentioning

confidence: 99%

Consecutive Field Trials of Rice Cultivation in Partially Decontaminated Paddy Fields to Reduce Radiocesium Absorption in the Iitate Village in Fukushima Prefecture

Ichio¹,

Tanoi

2016

Agricultural Implications of the Fukushima Nuclear Accident

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We performed consecutive field trials of rice cultivation to reduce radiocesium ( 134 Cs and 137 Cs) absorption by rice in a partially decontaminated paddy soil in the Iitate Village in Fukushima prefecture, Japan. People had evacuated this area because of the high levels of radioactive contamination caused by the nuclear disaster in 2011 at the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power. The radiocesium concentrations were measured for paddy soil and for lowland rice grown on variously decontaminated paddy soil in 2012 and 2013. The results show that the radiocesium concentration in the brown rice cultured in the fields of Sasu and Maeda with 2000-6000 Bq/kg dry weight (0-15 cm average soil depth) was below 40 Bq/kg, which is below the Japanese new standard for food (100 Bq/kg). In addition, the radiocesium concentration in the brown rice depended on the decontamination level of the paddy soil. In addition, the radiocesium concentration in the rice was reduced depending on the exchangeable K content of the soil, which plateaued around 20 mg K 2 O per 100 g dry soil. However, in 2013, in a test field of Komiya where the radiocesium concentrations were higher than 8000 Bq/kg dry weight, brown rice with more than 100 Bq/kg was harvested, indicating the need for further decontamination. Overall, our results show that decontamination and additional K fertilization can reduce the radiocesium concentration in rice to less than the new standard, and that we could resume rice cultivation in the Iitate village by rather practical way.

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Section: Introductionmentioning

confidence: 99%

Consecutive Field Trials of Rice Cultivation in Partially Decontaminated Paddy Fields to Reduce Radiocesium Absorption in the Iitate Village in Fukushima Prefecture

Ichio¹,

Tanoi

2016

Agricultural Implications of the Fukushima Nuclear Accident

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“…Furthermore, although K, sodium (Na) and Cs are alkali metals and are assumed to act similarly, the distribution pattern of K in different plant organs is different from that of Cs, as K was more preferentially translocated to the shoot from the roots (Tsukada et al 2002;Carvalho et al 2005). The addition of K can reduce plant Cs uptake due to the chemical similarities between these elements (Bange and Overstreet 1960;Handley and Overstreet 1961;Shaw and Bell 1991;Hampton et al 2004;Isaure et al 2006), and K and Cs enter root cells via the same molecular mechanism(s) (reviewed by White and Broadly 2000).…”

Section: Introductionmentioning

confidence: 99%

Varietal difference in radiocesium uptake and transfer from radiocesium deposited soils in the genusAmaranthus

Shinano

Chu

Osaki

et al. 2014

Soil Science and Plant Nutrition

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Cs, average ± SE), and the field was also cultivated in 2011. There was a significant varietal difference in the dry weight production, radiocesium accumulation and transfer factor (TF) of radiocesium from the soil to the plant. The ratio of the lowest TF to the highest TF was approximately 3. Because the ratio of 137 Cs to 133 Cs was significantly positive, radiocesium seems to be absorbed in a manner similar to that of 133 Cs. It is suggested that the varietal difference in the behavior of radiocesium uptake mainly depends on its genetic background rather than on environmental factors.

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“…However, potassium and cesium are likely to show different behavior in plants. Actually, there are reports that there is no correlation between the potassium and cesium content in rice (Tsukada et al, 2002;Yamaguchi et al, 2012). The 40 K concentration in kernels was below the detection limit (4 × 10 2 Bq·kg −1 DW).…”

Section: Resultsmentioning

confidence: 99%

Translocation of Radiocesium Released by the Fukushima Daiichi Nuclear Power Plant Accident in Japanese Chestnut and Chestnut Weevil Larvae

Sasaki¹,

Ishíi²,

Abe³

et al. 2017

Hortic J

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Rice uptake and distributions of radioactive 137Cs, stable 133Cs and K from soil

Cited by 77 publications

References 12 publications

Consecutive Field Trials of Rice Cultivation in Partially Decontaminated Paddy Fields to Reduce Radiocesium Absorption in the Iitate Village in Fukushima Prefecture

Consecutive Field Trials of Rice Cultivation in Partially Decontaminated Paddy Fields to Reduce Radiocesium Absorption in the Iitate Village in Fukushima Prefecture

Varietal difference in radiocesium uptake and transfer from radiocesium deposited soils in the genusAmaranthus

Translocation of Radiocesium Released by the Fukushima Daiichi Nuclear Power Plant Accident in Japanese Chestnut and Chestnut Weevil Larvae

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