Fig.1　Effect of radioactive cesium in surface water of paddy field on brown rice

Reference：”Cause of Appearing Rice with High Radioactive Cesium Concentration and Its Countermeasures” Outline, second edition (Ministry of Agriculture, Forestry and Fisheries)

• Pot-tests have revealed that the concentration of ¹³⁷Cs in brown rice does not increase so much, even when water containing 1.0 Bq/L ¹³⁷Cs in dissolved state continuously flows into paddy fields through the cropping season.
• The effect of water in river and dam lakes is low.

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Reference

1. 農林水産省, 福島県, （独）農業・食品産業技術総合研究機構, （独）農業環境技術研究所(2014): 放射性セシウム濃度の高い米が発生する要因とその対策について; 要因解析調査と試験栽培等の結果の取りまとめ(概要第2版), 25p. https://www.maff.go.jp/j/kanbo/joho/saigai/pdf/youin_kome2.pdf (2024.11.18アクセス)