Strontium-90 and Cesium-137 Absorbed by Rice Plants in Japan, 1960.
About 60 percent of strontium-90 contained in polished rice in 1960 is due to root absorption from soil. The amount of cesium-137 absorbed by rice plants directly from fallout during the period between ear-shooting and harvest is assumed to be about 20 percent of total cesium-137 in the plant.
Ichikawa
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Eto
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Abe
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