Abstract: Positive air pressure is applied on a ventral side of a plant canopy and negative air pressure is applied on a dorsal side of the plant canopy. By this arrangement, the negative air pressure draws air supplied by the positive air pressure on the ventral side of the plant canopy across the plant canopy past the dorsal side of the plant canopy to withdraw heat from the plant canopy, for example, from an agricultural lighting system and/or humidity from plant respiration in a controlled indoor environment.

Abstract: A plant container having a plant receptacle adapted to retain plant growth medium and defining an open cultivation end adapted for emergence of a plant system therefrom. The plant container features at least one fertigation supply trough and at least one fertigation drainage trough, each sloping inwardly from the open cultivation end. When the plant container is oriented such that the at least one fertigation supply trough is facing upward, liquid received in the fertigation supply trough flows along the fertigation supply trough away from the open cultivation end, through at least one fertigation supply aperture into and through the interior volume of the plant receptacle, into and along the fertigation drainage trough toward the open cultivation end, and exits by way of at least one fertigation drainage aperture. Typically a series of plant containers are received in end-to-end relation in a channel of a vertical plant cultivation tower.