Among various energy plants, Pongamia pinnata is one of the most important species because of its multipurpose uses, high oil content and high medicinal values and need to be cultivated in large-scale for commercial use. In order to facilitate survival and growth of suitable species in marginal and wastelands and for meaningful utilization of fly ash, fly ash with different concentrations and combinations of growing media were used as substrates supplemented with microbial inoculums for better establishment of vegetatively propagated plants of Pongamia pinnata. Maximum growth, biomass production and better nodulation in the plant was achieved using fly ash and coir pith in the proportion of 4:1 and garden soil and coir pith in the proportion of 3:2 as compared to dilution with sand and pure fly ash.
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