When deployed
as the sole substrate formushroomcultivation, the 100% biogas residue
substrate collapsed after a 14 day spawn run. Therefore to avoid
collapsing of biomass bed during spawn run (with BDR) and to provide
better aeration, the BDR needs to be mixed with other agro-residues.
When BDR was mixed with paddy straw in the order of 0%, 50%
and 100%, it was found that 50% mix gave better yields of 1.25 kg
mushroom per kg of substrate