Abstract: A pneumatic conveyor and related method for seeds or other particulate matter comprises a cyclone or vortex type discharge device, a blower for supplying a flow of air, a conduit coupled to the blower and to the discharge device for supplying a flow of air thereto, the conduit being primarily a flexible conduit, and a venturi in the conduit for pneumatic coupling to a supply of seeds whereby the seeds may be withdrawn from a supply container into the venturi for transport with the air stream to the discharge device. The venturi is connected to the container by a component that comprises a slide gate closure between the opening of the container and the intake of the venturi.