UPTAKE, ADSORPTION AND LEACHING OF RADIOSTRONTIUM IN A LYSIMETER EXPERIMENT

Journal Article · Sun Mar 01 04:00:00 EST 1964 · Soil Science (U.S.)

DOI:https://doi.org/10.1097/00010694-196403000-00003· OSTI ID:4057652

Wiklander, L

A lysimeter experiment was started in 1957 with an acid soil (pH = 4.5). By liming and K fertilization, four different treatments were arranged. In 1958, 50 mu c /sup 90/Sr, as SrCl/sub 2/, was added to the surface soil with the object of studying the translocation of Sr into the underlying soil, the distribution between exchangeable and nonexchangeable forms, the loss of Sr by leaching, and the uptake of Sr by crops during Liming was shown to retard the translocation of Sr from the surface soil to the subsoil in accordance with the theory. In the unlimed soils 32% of the Sr was found below a depth of 15 cm and in the limed soils only 11.0%. Potassium fertilization, on the other hand, somewhat increased the downward movement of Sr. Ten to 12% of Sr retained by the soil was transformed into nonexchangeable form. The loss of Sr by leaching during 1958-- 1962 was very small (about 1.2% of added Sr) and showed no significant influence of liming, which was due to the same composition of subsoil. Liming, as could be expected, strongly reduced the uptake of Sr by plants, the decrease being 40 to 45%. Four successive crops together took up 4.5 to 9.2% of added Sr. Red clover took up around 7 to 9 times as much as wheat and barley; in one red clover crop on unlimed soil not less than 5.0% of the added Sr was absorbed. Of the Sr taken up by barley 3.9% was found in the seed and 96.1% in the straw. Potassium fertilization decreased the Sr uptake by red clover but not that by barley and not significantly that by wheat. The data from the lysimeter experiments show that, in accordance with the results previously reported, the liming of acid soils contaminated with radioactive Sr has a beneficial effect on the crops by decreasing Sr availability, for it thus reduces its uptake and, consequently, the hazards of radiation. But liming may also have an unfavorable effect, in that it decreases Sr translocation in the soil, thus preserving Sr in the topsoil or in the limed horizon and decreasing its loss by leaching. (auth)

• Research Organization: Agricultural Coll. of Sweden, Uppsala
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-017457
• OSTI ID: 4057652
• Journal Information: Soil Science (U.S.), Journal Name: Soil Science (U.S.) Vol. Vol: 97; ISSN SOSCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
ADSORPTION
AGRICULTURE
BARLEY
BIOLOGY AND MEDICINE
CALCIUM OXIDES
CEREALS
DIFFUSION
DISTRIBUTION
FERTILIZERS
LEACHING
MEASURED VALUES
METABOLISM
NUMERICALS
PERFORMANCE
PLANT CELLS
PLANTS
POTASSIUM
RADIATION EFFECTS
RADIOACTIVITY
RED CLOVER
SEEDS
SOILS
STATISTICS
STRONTIUM 90
STRONTIUM CHLORIDES
VARIATIONS
WHEAT