Comparison of Radiocaesium Concentrations between Japanese Thinned-out Pear Fruit and Ripe Pear Fruit

Abstract

To investigate the predictability of radiocaesium concentrations in the Japanese ripe pear fruits (Hosui and Kosui) based on those in the thinned-out pear fruits before the harvest, radiocaesium concentrations in thinned-out and ripe pear fruits were measured by γ-ray spectrometry. There was no significant difference in ¹³⁷Cs concentrations of thinned-out and ripe pear fruits between Hosui and Kosui. The concentrations of ¹³⁷Cs in ripe pear fruits (whole and flesh) were about quarter of those in thinned-out pear fruits. This finding suggests that the radiocaesium concentrations in ripe pear fruits could be predicted from those in thinned-out pear fruits.