596678 Disclosed is a harvesting/packaging machine to evenly distribute waste plant matter back to the ground after harvesting. The mower conditioner machine includes a harvesting mechanism provided with a cutter (3), a plant-packaging system (4), and a means for collecting the elements from the ground, the assembly being supported by a frame (1) provided with a shroud or fairing(13), the machine, also comprising a plant ejection tunnel (14) uninterruptedly arranged with the packaging system (4), is characterized in that the shroud (13) is hinged to the ejection tunnel (14) by means of a transverse pin (17) positioned in the machine above and slightly behind the plant-packaging system (4), and in that the ejection tunnel (14) is in turn hinged to the frame (1).