Strontium-90 and Cesium-137 Absorbed by Rice Plants in Japan, 1960

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Science  23 Mar 1962:
Vol. 135, Issue 3508, pp. 1072
DOI: 10.1126/science.135.3508.1072


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.