Foliar Retention of Strontium-90 by Wheat

See allHide authors and affiliations

Science  25 Aug 1961:
Vol. 134, Issue 3478, pp. 559-560
DOI: 10.1126/science.134.3478.559


Wheat harvested from the University of Maryland Agronomy Farm in June 1959 contained 20 to 50 micromicrocuries of strontium-90 per kilogram of grain. More than 90 percent of the strontium-90 came from deposition on aboveground plant parts, and less than 10 percent was taken up through the soil. About 1 to 2 percent of the strontium-90 fallout during the time the heads were exposed was retained in the grain.