As part of a detailed survey on the contamination of Polish forests Sr
-90 activity concentrations were determined in bilberries. Elevated Sr
-90 levels were found in several samples from north-eastern Poland. Th
e calculated maximum Sr-90 surface contamination was 2 kBq . m(-2). Th
e correlation between Sr-90 and Cs-137 concentrations in bilberries wa
s good for two sets of samples originating from two geographical areas
of Poland indicating the local differences in radionuclide deposition
s from Chernobyl fallout.