Devices, systems and methods for using photosynthetic biomass to purify water, reduce indoor air pollution, remove greenhouse gases including CO.sub.2 from outdoor atmospheric air, and produce biofuel, food products, and fertilizer are provided herein. Also provided herein are systems and methods for enhancing growth of a photosynthetic biomass in a greenhouse.

Devices, systems and methods for using photosynthetic biomass to purify water, reduce indoor air pollution, remove greenhouse gases including CO.sub.2 from outdoor atmospheric air, and produce biofuel, food products, and fertilizer are provided herein. Also provided herein are systems and methods for enhancing growth of a photosynthetic biomass in a greenhouse.

A system and adjustable apparatus for applying CO.sub.2 gas to improve Cannabis production. The system includes upstream and downstream stages or subsystems. The upstream subsystem receives and stores gas, particularly CO2 gas. It monitors the environment of the downstream subsystem, determines when and how to apply gas to plants growing in the downstream system, acquires gas stored in the upstream subsystem, and distributes it to the downstream system. It also has various monitoring, command and control, management, and reporting features. The downstream subsystem includes one or more plant growth areas or plots, gas distribution means, such as gas conduits, tubes or lines from the midstream subsystem, and the high efficiency, adjustable gas applicator, and various sensing and monitoring devices communicatively connected to the upstream subsystem. Also disclosed are systems, apparatus and methods for pest control, humidity control, and odor control.

A system and adjustable apparatus for applying CO.sub.2 gas to improve Cannabis production. The system includes upstream and downstream stages or subsystems. The upstream subsystem receives and stores gas, particularly CO2 gas. It monitors the environment of the downstream subsystem, determines when and how to apply gas to plants growing in the downstream system, acquires gas stored in the upstream subsystem, and distributes it to the downstream system. It also has various monitoring, command and control, management, and reporting features. The downstream subsystem includes one or more plant growth areas or plots, gas distribution means, such as gas conduits, tubes or lines from the midstream subsystem, and the high efficiency, adjustable gas applicator, and various sensing and monitoring devices communicatively connected to the upstream subsystem. Also disclosed are systems, apparatus and methods for pest control, humidity control, and odor control.

An automated growing system comprises a plurality of vegetative production lines for moving a plurality of planted growing channels from a first end to a second end of a growing area, a plurality of flowering production lines for moving the channels from the second end to the first end, and a first conveyor belt for moving planted growing channels from the plurality of vegetative production lines to the plurality of flowering production lines. Each production line may comprise a frame, a conveyor assembly configured to receive growing channels, a fertigation delivery line comprising a plurality of regulators spaced therealong for depositing fluid into the growing channels, a drainage trough, and an air supply duct positioned under the conveyor assembly, the air supply duct comprising a plurality of openings therein for delivering conditioned air to plants growing in the growing channels. Each growing channel may comprise a trough having a first end higher than a second end, a flange extending laterally from each of a pair of opposed lateral edges of the trough and having a plurality of leach lines on an upper surface thereof extending a different predetermined distance from the first end toward the second end, and a fertigation receiving structure attached to the first end of the trough and configured to direct fluid falling therein into the leach lines of each flange.

An apparatus for use in indoor agriculture is provided, the apparatus comprising a plurality of elongate supports (6) connected to at least one common manifold (8a, 8b). Each elongate support (6) within the plurality of elongate supports (6) comprising: a main body (12) having a first side; at least one inlet (16) in fluid communication with the at least one common manifold (8a, 8b); a plurality of outlets (14); and a channel within and extending along substantially the length of the main body (12) between the at least one inlet (16) and the plurality of outlets (14). The at least one common manifold (8a, 8b) is configured to allow gas to flow into the at least one inlet (16) of the plurality of elongate supports (6), wherein the apparatus is configured such that during use, gas may flow from the common manifold (8a, 8b) to the at least one inlet (16) of each elongate support (6) within the plurality of elongate supports (6), through the channel of each elongate support (6) and out of the plurality of outlets (14) of each elongate support (6), such that a uniform flow of gas is provided adjacent the first side of the main body (12) during use.

An apparatus for use in indoor agriculture is provided, the apparatus comprising a plurality of elongate supports (6) connected to at least one common manifold (8a, 8b). Each elongate support (6) within the plurality of elongate supports (6) comprising: a main body (12) having a first side; at least one inlet (16) in fluid communication with the at least one common manifold (8a, 8b); a plurality of outlets (14); and a channel within and extending along substantially the length of the main body (12) between the at least one inlet (16) and the plurality of outlets (14). The at least one common manifold (8a, 8b) is configured to allow gas to flow into the at least one inlet (16) of the plurality of elongate supports (6), wherein the apparatus is configured such that during use, gas may flow from the common manifold (8a, 8b) to the at least one inlet (16) of each elongate support (6) within the plurality of elongate supports (6), through the channel of each elongate support (6) and out of the plurality of outlets (14) of each elongate support (6), such that a uniform flow of gas is provided adjacent the first side of the main body (12) during use.

A plant cultivation method includes providing a growth period and a rest period alternately. In the rest period, a dark period and a bright period is alternately provided. In the dark period, an intensity of light applied to a cultivation target plant is lower than a light intensity at a light compensation point. In the bright period, blue light whose wavelength is 400 nm to 500 nm is applied at an intensity that is lower than the light intensity at the light compensation point. A one-cycle time T of repetition of the dark period and the bright period is 2 μs to 500 μs. A duty ratio ΔT/T of a bright period time ΔT to the one-cycle time T is 20% or smaller. The blue light has a photosynthetic photon flux density of 0.001 μmol.Math.m.sup.−2.Math.s.sup.−1 to 4.0 μmol.Math.m.sup.−2.Math.s.sup.−1.

Pathogen reduction is highly desirable when growing plants. Foliar spraying with CO.sub.2-infused water has been found to reduce the number of plant pathogens, with higher frequency of foliar spraying reducing the number of plant pathogens by greater amounts. However, too frequent foliar spraying with CO.sub.2-infused water may harm the plant, the frequency of foliar spraying at which this occurs depending on the species of plant. A balance is found at which the frequency of foliar spraying is high enough to effectively control plant pathogens but not so high as to harm the plant. This balance is dependent on the species of plant.

Pathogen reduction is highly desirable when growing plants. Foliar spraying with CO.sub.2-infused water has been found to reduce the number of plant pathogens, with higher frequency of foliar spraying reducing the number of plant pathogens by greater amounts. However, too frequent foliar spraying with CO.sub.2-infused water may harm the plant, the frequency of foliar spraying at which this occurs depending on the species of plant. A balance is found at which the frequency of foliar spraying is high enough to effectively control plant pathogens but not so high as to harm the plant. This balance is dependent on the species of plant.