The apparatus forms a unitary bale of agricultural or forestry biomass of uniform density and having a level top. The apparatus includes packer apparatus configured and supported in the chamber for reciprocating movement through a compacting chamber and progressive movement upwardly to form the bale. A crop deflector is supported in the chamber above the packer apparatus for deflecting a stream of the biomass downwardly, and is configured and operable so as to move continuously with the packer apparatus between the ends of the chamber and to substantially constantly reconfigure as a function of a position of the packer apparatus and a direction of the movement thereof so as to deflect the stream of the biomass directly in a path of the packer apparatus in the current direction of the movement thereof so as to be immediately compacted thereby onto the floor or the bale.
