EXCHANGEABLE CALCIUM OF SOIL AND90Sr ACCUMULATION BY CROPS

Abstract

In the field experiments conducted on sod-podzolic loamy sand soil (Podzoluvisol) сlose negative correlations have been found between exchange calcium contents in the soil and⁹⁰Sr accumulation by plants. The efficiency of soil saturation by calcium in discrimination of⁹⁰Sr is much higher on soils with low Ca status. The minimum of bioavailability of⁹⁰Sr was observed at the content of exchange calcium for grain crops at 1300-1400 ppm of soil, rapeseed - 1195, corn - 1236, timothy grass - 980, clover - 1229, alfalfa - 1502 and potato - 1260 ppm of soil.