USEFULNESS OF AFCF AS A COUNTERMEASURE FOR RADIOCESIUM TRANSFER FROM LOAMY SOIL TO RYE-GRASS AND CLOVER

Promising results were obtained using ammonium-ferric-hexacyano-ferrat e (AFCF) as a countermeasure to reduce radiocaesium transfer to rye-gr ass grown on sandy soil. In the aftermath of these results, its effica city as a countermeasure on loamy soil was tested. AFCF concentrations of 3 and 10 g m(-2) reduced radiocaesium transfer from loamy soil to rye-grass by 28% and 64%, respectively. AFCF additions of less than 3 g m(-2) were not effective in reducing the TF. Ploughing the soil was as effective in reducing radiocaesium transfer as were AFCF additions of 10 g m(-2). For lover, only AFCF additions of 10 g m(-2) significan tly reduced transfer (by 60%). As for rye-grass, ploughing was equally effective in reducing TF as the highest AFCF dose. Contrary to the re sults for rye-grass, however, AFCF addition rates of 10 g m(-2) decrea sed the growth of clover. (C) 1997 Elsevier Science Ltd.