A plant illumination device may include an elongate body comprising: a light propagating section, a light quenching section coupled to a first end of the light propagating section, and, optionally, a light conducting apex coupled to a second end of the light propagating section. In some embodiments, the light conducting apex acquires light which propagates to the light propagating section. The light propagating section may be positioned in proximity to a non-root portion of a plant and the light quenching section in proximity to a root system of the plant. In some embodiments, the light is prevented from reaching the root system of the plant by the light quenching section. In some embodiments, the light includes sunlight, green light, or red light.

Provided herein is a high intensity discharge light source having a thermally insulative and optically transparent sleeve for maintaining or enhancing a spectral performance parameter. The configuration of the sleeve provides an insulative volume that allows an elevated steady state operating temperature to be reached, even when the light source is cooled. The sleeve is also configured to withstand a bulb failure event, thereby protecting the surrounding environment from falling debris. Also provided herein are methods for dissipating heat from the light source without adversely affecting the bulb operating temperature or the enhanced spectral performance parameter.

The present invention provides a circular polarization illumination device which can irradiate right-circularly polarized light at a large light amount from a light source of right-circularly polarized light with a high efficiency and can irradiate left-circularly polarized light at a large light amount from a light source of left-circularly polarized light with a high efficiency, and a plant growth regulation method that can efficiently regulate the promotion or inhibition of the growth of plants by using the circular polarization illumination device. Moreover, the illumination device includes a light-emitting light source, a reflective polarizing plate, reirradiation unit, and circular polarization conversion unit.

An internet of things (IoT) based hydroponic farm system is described. The hydroponic farm system includes a cloud server, a plurality of hydroponic farms, and a plurality of user computing stations. The cloud server includes a data distribution service domain that includes data distribution service middleware configured to use a real-time publish-subscribe protocol to wirelessly communicate hydroponic farm information. Each of the hydroponic farms is divided into a plurality of hydroponic plant growing zones that are configured to grow at least one species of plant. Each hydroponic plant growing zone includes a zone controller. A farm controller is assigned to each of the hydroponic farms. The plurality of user computing stations are subscribed to the data distribution service middleware and are configured to communicate, through the data distribution service domain, with the zone controller, the farm controller, a process controller, a production planning controller, and an enterprise resource planning controller.

A modular LED grow light system is provided that includes one or more LED grow light modules. Each of the LED grow light modules includes one or more connecting ports and an LED. The one or more connecting ports are configured to connect to another LED grow light module. A power source is connected to one of the connecting ports of the one or more LED grow light modules. The LEDs of the one or more LED grow light modules provide light to a portion of a plant.

A vertical farming layer structure comprising: an underlying support for supporting a plurality of farmed plants; a light-reflective upper surface positioned above and facing the underlying support, the light-reflective upper surface being adapted to reflect light by diffuse reflection; and a plurality of light-emitting devices positioned between the underlying support and the light-reflective upper surface, each light-emitting device being positioned to emit light along a respective optical axis oriented towards the light-reflective upper surface such that light emitted from the light-emitting device is at least partially diffusely reflected off of the light-reflective upper surface to reach the plants supported on the underlying support.

Disclosed herein are a light source module for plant cultivation and a light device including the same. The light source module for plant cultivation may include at least one main light source emitting white light. The white light from the main light source is provided to a plant during cultivation to improve the growth and phytochemical content of the plant. In addition, the white light may have peak wavelengths of 430 nm or less, 440 nm to 460 nm, 510 nm to 530 nm, and 600 nm to 630 nm.

This invention is directed to a method of growing a plant from the Cannabaceae family, the cultivar or composition produced therefrom, wherein the plant is exposed to artificial lighting of different intensities based on spacing, growth phase, and flowering yield.

To stabilize and improve efficiency of continuous flowering while eliminating season dependency in strawberry cultivation. First, a strawberry seed is germinated by controlling an environment adjusting device installed in a closed environment so as to achieve a first cultivation environment suitable for germination of strawberry. Next, a strawberry seedling germinated is grown by controlling the environment adjusting device so as to achieve a second cultivation environment suitable for growing strawberry seedling. Next, the strawberry seedling is further grown to cause a terminal flower cluster to flower by controlling the environment adjusting device so as to achieve a third cultivation environment suitable for flowering of the terminal flower cluster. Then, first and subsequent axillary flower clusters are caused to successively flower by controlling the environment adjusting device so as to achieve a fourth cultivation environment suitable for flowering of the first and subsequent axillary flower clusters.

A lighting system is provided with an illumination device with a semiconductor light emission solution and device suited for plant cultivation in a greenhouse environment are described. A lighting device with binary alloy quantum dots made by colloidal methods produces a size distribution of quantum dots that produces an emission spectrum similar to the photosynthetically active radiation (PAR) spectrum. The methods and arrangements allow more precise spectral tuning of the emission spectrum for lights used in plant cultivation. Therefore unexpected improvements in the photomorphogenetic control of plant growth, and further improvements in plant production are realized.