Study species Study soil Uranium (Bq Kg-1) Thorium (Bq Kg-1)
Eruca sativa Black sand 76.919 ± 3.105*** 32.458 ± 0.617***
  Inland site 45.247 ± 1.885 16.027 ± 0.617
Lycopersicum esculentum Black sand 95.429 ± 3.105*** 31.246 ± 1.017***
  Inland site 46.892 ± 2.468 11.448 ± 0.617
Psidium guajava Black sand 86.791 ± 1.885*** 20.067 ± 0.617***
  Inland site 60.877 ± 1.425 7.946 ± 0.617
Mangifera indica Black sand 81.855 ± 1.885*** 24.242 ± 0.808***
  Inland site 9.749 ± 0.445 1.912 ± 0.102
Different superscript stars for the same species indicate a significant difference, *** significant at P ≤ 0.001.
Table 1: Uranium and Thorium concentrations (BqKg-1 dry weight) in the soil of coastal black sand and in the inland (control) sites in which the study plant species were cultivated. Data are expressed as mean ± S.D (n=5).