A modified biomass combine was used in field experiments focused on measuring the productivity of single-pass bulk harvest and single-pass bale harvest systems. These harvesting machines were outfitted with ISOBUS data loggers to track overall in-field performance data. Testing of machine productivity was conducted at .7 ton/ac (1.6 Mg/ha), 1.5 ton/ac (3.4 Mg/ha), and 2.4 ton/ac (5.4 Mg/ha) for each system. The combine was also tested in a conventional configuration to provide baseline productivity data. Testing revealed significant impacts of the harvesting system on overall machine productivity and highlight the need for additional machine development to support the collection and harvest of biomass residues and grain.