The results of the study indicated that application of fly ash levels had relatively higher amount of heavy metal elements (Se, Ar and Pb) and radionuclides in soils than that with conjunctive use of fly ash and FYM @ 20 t ha-1. Further, the application of fly ash at maximum dose @ 40 t/ha increased the concentration of heavy metal elements and activity of natural radionuclides (40K, 226Ra and 228Ac) in edible parts of crops viz., sunflower, groundnut and maize grown on Alfisols and Vertisols. Similar observations were noticed in biomass of these crops. However, combined application of fly ash and FYM did not increase the heavy metal elements and radio nuclide activity in seeds or stover of crops. The levels of radio nuclides and heavy metal elements in soils and crop produce are well within the permissible limit.