THE ACCUMULATION OF 137СS IN SPRING WHEAT ON ANTHROPOGENIC-TRANSFORMED PEAT SOIL DEPENDING ON NITROGEN AND POTASSIUM NUTRITION LEVELS

Abstract

On the anthropogenic-transformed peat soil the minimum accumulation of 137Cs with spring wheat is noted at a nitrogen-potassium ratio of 1:1.0-1.2. At a ratioof 1:0.2-0.6, nitrogen deficiency and an increase in radionuclide concentration in grain are observed due to a decrease in yield. The introduction of high rates of nitrogen fertilizers on a low background of potassium nutrition broadens the N:K ratio, which is accompanied by the formation of a potassium deficiency and a decrease in the entering plants. An increase in the accumulation of a ra-dionuclide in the grain is observed at a ratio above 1:1.5.