Shahed University

Study of Caesium Uptake and its Interaction Effect with Potassium in Corn and Potato

Marziyeh Ghavami Far | Hossein Torabi Golsefidi | Ali Bahrami Samani | ebrahim Mogiseh

Date :  2017/07/23
Publish in :    علوم و فنون هسته اي

Keywords :Interaction, Potassium

Abstract :
Abstract: 137Cs is one of the products of nuclear fission. Due to its energetic gamma-ray emission along with decay and long half-life, it is one of the most important environmental radionuclides. Transfer of radionuclides from air, soil and freshwater to the foodchain of man will endanger human health. Potassium as an essential macro nutrient for plants due to similarity of its hydrated radius to that of Caesium, has similar behavior in soil and plant. So, in this study, the relationship between Caesium and Potassium in soil and plant and the ability of Caesium uptake was investigated. A pot experiment in a factorial design based on randomized complete block was performed with two plant species; Dent corn (Zea mays L. var. indentata), Akbari potato (Solanum Tuberosum), 3 levels of 133Cs (0, 17 and 34 mgkg-1 of soil from Caesium Nitrate) and 3 levels of Potassium (0, 22.5 and 45 mgkg-1 of soil from Potassium Sulfate), contain of 6kg soil per pot with three repeat. The results showed that the effect of plant species, Caesium and Potassium treatment are significant (P0.01). The average amount of Caesium in corn and potato were respectively 29.55 and 9.15 mgkg-1 dry matter. Increasing the amount of Caesium to 17 and 34 mgkg-1 of soil, increased plans absorption of Caesium by 227 and 537 respectively, compared to control. The Interaction effect of Caesium and Potassium treatments in the amount of Caesium of plant was significant (P0.01). The results showed that increasing the surplus of Potassium of plant need in 22.5 and 45 mgkg-1 of soil, treatment of Potassium has reduced Caesium uptake of plants by 53 and 37 respectively, compared to control.