Behaviour of heavy natural radionuclides in irrigated soils

Experimental data on the influence of marine tertiary depositions used as meliorative substances and fertilizers on the values of heavy natural radionuclide washout from irrigated soils are presented. It is pointed out that under the influence of flushing waters, formed after irrigation, the radionuclides can be washed out beyond the limits of rood-inhabited zone of soil. As a result washout of heavy natural radionuclides from soils in flushing conditions is described by regression equation