Difference in cesium accumulation among rice cultivars grown in the paddy field in Fukushima Prefecture in 2011 and 2012

Ohmori, Yuki; Inui, Yayoi; Kajikawa, Masataka; Nakata, Atsumi; Sotta, Naoyuki; Kasai, Koji; Uraguchi, Shimpei; Tanaka, Nobuhiro; Nishida, Sho; Hasegawa, Takahiro; Sakamoto, Takuya; Kawara, Yuko; Aizawa, Kayoko; Fujita, Haruka; Li, Ke; Sawaki, Naoya; Oda, Koshiro; Futagoishi, Ryuichiro; Tsusaka, Takahiro; Takahashi, Satomi; Takano, Junpei; Wakuta, Shinji; Yoshinari, Akira; Uehara, Masataka; Takada, S.; Nagano, Hayato; Miwa, Kyoko; Aibara, Izumi; Ojima, T.; Ebana, Kaoru; Ishikawa, Shinya; Sueyoshi, Kuni; Hasegawa, Hiroshi; Mimura, Tetsuro; Mimura, Mari; Kobayashi, Natsuko I.; Furukawa, Yoshihiro; Kobayashi, Daisuke; Okouchi, Toshiyasu; Tanoi, Keitaro; Fujiwara, Toru

doi:10.1007/s10265-013-0616-9

Cited by 35 publications

(26 citation statements)

References 7 publications

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“…There were similarities found between 133 Cs and 137 Cs in distribution among plant parts, and in the relationship between plant uptake and exchangeable Cs contents (Tsukada et al 2002a;Kondo et al 2014). On the other hand, it was found that there were discrepancies between 133 Cs and 137 Cs in accumulations by rice varieties under the field conditions in Fukushima Prefecture, which was affected by the accident at the Fukushima Daiichi Nuclear Power Station in 2011 (Ohmori et al 2014). This discrepancy was, as the authors speculated, probably due to the difference in distribution in soil profile and availability to the rice between 133 Cs and 137 Cs, because 137 Cs had been freshly added to the soil surface, and not due to the isotopic effect.…”

Section: Control Of Cs Accumulation Based On Competitive Dynamics Betmentioning

confidence: 89%

Comparative analysis of the relationship between Cs and K in soil and plant parts toward control of Cs accumulation in rice

Kondo

Makino

Eguchi

et al. 2014

Soil Science and Plant Nutrition

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The effect of soil exchangeable potassium (K) and cesium (Cs) levels on Cs uptake and accumulation in different parts of rice (Oryza sativa L.) plants were examined using paddy soils with diverse exchangeable K and Cs in pot experiments. Aboveground Cs uptake decreased with higher exchangeable K and was linearly correlated with exchangeable Cs/K ratios, indicating competitive absorption of these elements by roots. Variation in Cs concentration in brown rice among soils was also related to the exchangeable Cs/K ratio. The exchangeable Cs/K ratio was positively reflected in the Cs/K concentration ratio in each plant part, with a specific slope, suggesting that Cs transport was coordinated with K transport and that there were regulated discriminations of Cs against K in the translocation process among parts. The Cs/K ratio was higher in brown rice and dead leaves than in active leaves, stems and husks. The distribution of Cs accumulation in brown rice was 14.5% on average, but it was variable and negatively related to K concentration in the stem. The Cs distribution in aboveground plant parts also decreased with higher K concentration in the root. These results imply the importance of the competitiveness with K in the root absorption and translocation of Cs within the plant. Based on the observed relationship between Cs and K, effective K management and other measures to control Cs accumulation in plant parts are discussed.

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Section: Control Of Cs Accumulation Based On Competitive Dynamics Betmentioning

confidence: 89%

Comparative analysis of the relationship between Cs and K in soil and plant parts toward control of Cs accumulation in rice

Kondo

Makino

Eguchi

et al. 2014

Soil Science and Plant Nutrition

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“…We found that the amount of radiocesium extracted by ammonium fertilizer increased the day after fertilization; therefore, soybean could absorb radiocesium. In addition, the ammonium and cesium ions are both univalent cations, and ammonium has been found to restrict cesium absorption in the hydroponics [9][10][11]. This study was used by soil.…”

Section: Discussionmentioning

confidence: 99%

“…This occurred because it recently became clear that potassium fertilization was effective for reducing the radiocesium concentration in agricultural crops [8,9]. Nitrogen (N) has a large effect on crop growth, and some reports have suggested that it also promotes the radiocesium absorption [10,11]. However, few studies have examined how nitrogen contributes to the radiocesium absorption in soybean apart from potassium.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen Fertilization on Radiocesium Absorption in Soybean

Nihei

Hirose

Mori

et al. 2016

Radiological Issues for Fukushima’s Revitalized Future

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Radioactive materials that were released during the nuclear accident contaminated the soil and agricultural products. It has become clear that potassium fertilization is effective for the reducing radiocesium concentrations in agricultural crops. However, apart from reports about potassium, few reports have examined how nitrogen (N), which has a large effect on crop growth, contributes to the radiocesium absorption. Focusing on this point, we studied the effect of nitrogen fertilizer on the radiocesium absorption in soybean seedlings. The concentration of radiocesium in the seed of soybean was higher in nitrogen-fertilized plants than in plants grown without fertilizer. The radiocesium concentration in the aboveground biomass increased as the amount of nitrogen fertilization increased. A comparison of the effects of the different forms of nitrogen treatment shows that the highest radiocesium concentration in the aboveground biomass occurred with ammonium sulfate (approximately 3.7 times the non-N), the next highest absorption occurred with ammonium nitrate (approximately 2.4 times the non-N treatment), followed by calcium nitrate (approximately 2.2 times the non-N treatment). Furthermore, the amount of radiocesium in soil extracts was highest with ammonium-nitrogen fertilization. Further study is required to clarify the factors that incur an increase in radiocesium concentration in response to nitrogen fertilization. Special care is required to start farming soybean on fallow fields evacuated after the accident or on fields where rice has been grown before, which tend to have higher available nitrogen than the regularly cultivated fields.

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“…The differences in radiocesium absorption between varieties have been conducted on rice (Ohmori et al 2014). In this paper, the absorption of radiocesium was studied comparing 10 varieties of soybean in Iitate Village, Fukushima Prefecture.…”

Section: Differences Between Soybean Varietymentioning

confidence: 99%

Monitoring Inspection for Radioactive Substances in Agricultural, Livestock, Forest and Fishery Products in Fukushima Prefecture

Nihei

2016

Agricultural Implications of the Fukushima Nuclear Accident

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We summarize the inspections of radiocesium concentration levels in agricultural, livestock, forest and fishery produced in Fukushima Prefecture, Japan, for 3 years from the nuclear accident in 2011. The ratio in which radiocesium concentration exceeded the 100 Bq/kg from March 2011 to June 2011 was 18 % in agricultural products (excluding rice), 3 % in livestock productions, 49 % in forest productions, and 52 % in fishery produced. After June 2011, radiocesium concentration reduced drastically. Radiocesium concentration in agricultural and livestock products hardly exceeded the 100 Bq/kg. On the other hand radiocesium concentrations of forest and fishery products have been falling every year, but there were a little high concentration samples. Soybean is one of the agricultural products, and the radiocesium concentration is higher than the other agricultural products. We analyzed the absorption process in soybean in contaminated areas. The radiocesium concentration of the above-ground part was lateral root > leaf≒petiole≒pod > stem≒main root. There was a difference in concentration ratio of radiocesium: potassium among parts of the plant. Comparing 10 soybean varieties, radiocesium concentration of wild soya bean showed more than twice as high as other varieties. And the radiocesium inside the soybean grain was distributed generally uniformly throughout the entire grain.

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Difference in cesium accumulation among rice cultivars grown in the paddy field in Fukushima Prefecture in 2011 and 2012

Cited by 35 publications

References 7 publications

Comparative analysis of the relationship between Cs and K in soil and plant parts toward control of Cs accumulation in rice

Comparative analysis of the relationship between Cs and K in soil and plant parts toward control of Cs accumulation in rice

Effect of Nitrogen Fertilization on Radiocesium Absorption in Soybean

Monitoring Inspection for Radioactive Substances in Agricultural, Livestock, Forest and Fishery Products in Fukushima Prefecture

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