A metering assembly (100) is provided for use with an air seeding system (10) for delivering one or more particulate materials to an air seeding apparatus (30), the air seeding system (10) comprising a product tank (52), configured to hold a particulate material and having an outlet (54), the detering assembly (100) comprising at least one metering device (110), the metering device (110) having a housing (112), an inlet (116) positioned in the housing (112) to receive particulate material from the outlet of the product tank (52), a first loading zone (130) and a second loading zone (140), and a flow controller (118) provided beneath the inlet (116) and operative to route particulate material that has entered the metering device (110) through the inlet (116) in a first direction towards the first loading zone (130) and in a second direction towards the second loading zone (140).
