Thumbnail
Access Restriction
Open

Author Roberts, H. (Jr.) ♦ Menzel, R. G.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword BIOLOGY AND MEDICINE ♦ CALCIUM ♦ METABOLISM ♦ PLANTS ♦ SOILS ♦ STORAGE ♦ STRONTIUM 90
Abstract Exchangeable and nonexchangeable fractions of strontium-90 were determined in soil samples taken from the plow layer of cultivated fields in the coastal plain of Nonth Carolina in June 1955 and December 1958. Exchangeable strontium-90 contents averaged about 10 and 50 mu mu per kg of soil on the two sampling dates, respectively. Nonexchangeable strontium-90 averaged 4 and 7 mu mu , respectively. Lower amounts of both fractions of strontium-90 were recovered in samples extracted after dry storage for 1 year. The uptake of strontium-90 and calcium from these soils was studied by growing cowpeas in the greenhouse. From 8 to l8% of the exchangeable strontium was taken up, depending on the uptake of exchangeable calcium. Use of discrimination factors to determine availability of nonexchangeable strontium-90 to plants is discussed. Nonexchangeable strontium-90 apparently made little or no contribution to uptake. (auth)
Educational Use Research
Learning Resource Type Article
Publisher Date 1961-03-01
Journal J. Agr. Food Chem.
Volume Number 9
Organization U.S. Dept. of Agriculture, Beltsville, Md.


Open content in new tab

   Open content in new tab