INFLUENCE OF AGROCHEMICAL PROPERTIES OF SOD-PODZOLIC LOAMY SAND SOIL ON137Cs ACCUMULATION BY MEADOW CLOVER

Abstract

In studies conducted in 2012-2013 on Luvisol loamy sand soils, it was found that the minimum accumulation of¹³⁷Cs by clover plants is observed at exchangeable pH in the range of 6.1-6.7. The minimum transfer of¹³⁷Cs to clover are observed at the content of exchange calcium - 1430-1580 mg/kg and magnesium - 138-155 mg/kg of soil. The minimum accumulation of¹³⁷Cs by clover plants is observed when the content of mobile potassium is 480-530 mg/kg of soil. The accumulation of¹³⁷Cs by clover decreases more intensively with an increase in the content of mobile potassium in the soil to the level of 300 mg/kg K₂O, further increase of mobile potassium in the soil is less effective. A fairly close and reliable relationship has been established between the transfer factor of¹³⁷Cs and the humus content in the soil. The minimum transfer factor for¹³⁷Cs is recorded at humus content in the range from 2.7 to 3.1 %.