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Sr⁹⁰ Uptake by Plants as Influenced by Soil Types and Liming¹

ABSTRACT

A greenhouse study was conducted to determine the influence of various soil types and liming on the uptake of Sr⁹⁰ by plants. There were highly significant differences in the total uptake and concentration of Sr⁹⁰ by corn, soybeans, buckwheat, Sudangrass, and alfalfa from different soil types and liming. In general, the total uptake of Sr⁹⁰ from acid Ashtabula, Miami, and Canfield soils was considerably higher than the total uptake from slightly acid Brookston soil. Liming depressed the total uptake of Sr⁹⁰ by the plants grown on the acid Ashtabula, Miami, and Canfield soils; but had no effect on the total Sr⁹⁰ uptake by the plants from Brookston soil. These differences appear to be associated partly with the differences in exchangeable calcium and pH of the soils. The accumulation of radiostrontium by the various plant species after 5 weeks of growth was in the order: Buckwheat > soybeans > alfalfa > Sudangrass = corn.

¹ Contribution from the Department of Agronomy, Ohio Agr. Exp. Sta., Wooster, as Journal Article No. 42–60. Based on work performed under contract number AT (11-1)-414, State Special 64, with the United States Atomic Energy Commission. The authors are indebted to Dr. N. Holowaychuk for his assistance and excellent comments during the course of study.

² Assistant Professor, Ohio Agr. Exp. Sta. and Plant Physiologist, CRD, ARS, USDA, respectively.

Received for publication June 27, 1960. Accepted for publication August 15, 1960.