137Cs soil-wheat plant transfer in greenhouse conditions

The soil to plant transfer factors of 137Cs were determined in pot experiments, using a foamy soil with known properties. The variants of work were: (A) control soil: 40K: 603.02 ± 49.45 Bq/kg dry weight; 137Cs: 17.13 ± 2.57 Bq/kg dry weight; (B) 137Cs contaminated soil: 40K: 657.64 ± 64.45 Bq/kg dry weight; 137Cs: 1248.11 ± 74.89 Bq/kg dry weight; (C) 137Cs contaminated soil and then KNO3 treated: 40K: 745.37 ± 60.00 Bq/kg dry weight; 137Cs: 961.09 ± 57.67 Bq/kg dry weight. The wheat was sown three months after soil contamination. The 137Cs and 40K concentrations were measured by gamma spectrometry in 30 days old wheat. The experiments were repeated for three growing periods. The soil to wheat plant transfer factor of 137Cs for variant A and B was 0.170 and 0.075 respectively. If potassium was added to the soil contaminated with radiocesium (variant C), the radiocesium transfer factor was reduced at about 0.019