NOVELTY - Microbial inoculant comprises combination of bacterial cultures and suitable carrier, where the combination comprises first bacterial culture comprising Lactobacillus buchneri, or its derivative, and second bacterial culture chosen from Bacillus licheniformis BL842 strain (NRRL B-50516), Bacillus licheniformis BL21 strain (NRRL B-50134), and Bacillus subtilis BS27 strain(NRRL B-50105), and their derivatives.    USE - The microbial inoculant is useful for producing silage and biogas, preferably methane The methods (M1) and (M2) are useful for producing biogas from silage and biomass composition respectively The method (M3) is useful for reducing dry matter loss (all claimed).    ADVANTAGE - The microbial inoculant results in a synergistic increase in production of biogas or decrease in dry matter loss.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) forage comprising the above-mentioned microbial inoculants;    (2) sludge comprising the above-mentioned microbial inoculants;    (3) biomass composition comprising sludge and silage, and further comprising the microbial inoculants;    (4) method (M1) for producing biogas from silage involves (a) adding the above-mentioned microbial inoculant to forage, (b) ensiling the forage inoculated with the combination of bacterial cultures to produce silage, and (c) adding biomass comprising the silage to a biogas generator, where biogas is produced in the biogas generator;    (5) method (M2) for producing biogas from biomass composition (a) combining silage and sludge to form biomass composition, (b) performing the above-mentioned step (b), and (c) adding the biomass composition comprising the microbial inoculant to a biogas generator; and    (6) method (M3) for reducing dry matter loss during ensiling involves (a) performing the above-mentioned steps (a) and (b), where dry matter loss during ensiling of the inoculated forage is reduced when compared to dry matter loss from uninoculated forage.