Evaluation of the Origins of Strontium-90 Contained in Wheat Plant

Twenty percent of the strontium-90 in wheat flour in 1959 was due to root absorption, 30 percent was due to floral absorption from soil particles attached to the ear, and 50 percent was due to current fallout. In 1960, 35 percent was due to root absorption, 50 percent to floral absorption from soil, and 15 percent to current fallout.