To enhanced the development and reproduction of Eri silkworm incorporation of Coal Flyash Liquid (CFL) in their natural diet was developed to evaluate the growth and fecundity rate of eri silkworm. energy dispersive analysis of castor leaves treated with CFL at 10% concentration revealed the presence of five major minerals viz., magnesium (Mg), silica (Si), chlorine (Cl), potassium (K) and calcium (Ca). While CFL incorporated castor leaf enhanced the pupation rate, shell weight, cocoon shell ratio, fecundity and egg hatchability of the silkworm. In contrast, pupal weight was increased at lower concentration of CFL with a weight of 2.39 mg. A significant difference was observed in rearing performance of eri silkworm at different concentrations of CFL incorporated castor leaf. Relative growth rate of the eri silkworm was increased to 84% when larvae treated with CFL at 5% concentration. Further, CFL at the concentration of 5% enhanced the seed germination percentage and at the higher concentration of 10% increased the root-shoot ratio, relative water content and vigour index of cucumber. Similar response of increase in studied growth parameters was also observed in radish seedlings when treated with CFL. The physiochemical properties of CFL amended soil (5%) showed that available phosphorous level and potassium level was increased respectively to 9.52% and 53.92% in comparison to control. It could be concluded that minerals present in CFL may be influential and responsible for the growth of eri silkworm and seedling of cucumber and radish.