Various implementations disclosed herein includes a method for operating lighting fixtures in horticultural applications. The method may include receiving a user input of a desired irradiance for a first color channel of one or more lighting fixtures that irradiates a plant bed, in which each of the one or more lighting fixtures comprises at least one light emitting diode (LED) array, determining, for each of the one or more lighting fixtures, a PWM setting of the first color channel such that each of the one or more lighting fixtures irradiate the plant bed at the desired irradiance based on calibration data stored in each of the one or more lighting fixtures, and applying, to each of the one or more lighting fixtures, the determined PWM setting of the first color channel.

Plant cultivation for increasing the phytochemical content of a Labiatae plant is provided. The plant cultivation includes cultivating the Labiatae plant in a visible light environment having a dark period and a light period during which the Labiatae plant is exposed to visible light in an alternate manner, and performing treatment with UVB radiation during the light period for at least one day before harvesting. A cumulative dose of the UVB radiation may range from 0.54 J/m.sup.2 to 4.32 kJ/m.sup.2.

A plant growth monitoring system comprises an image capture system for capturing images over time of a plant being monitored. The images are used to derive successive time instants corresponding to predetermined growth states of the plant. A temperature exposure parameter is obtained between the successive time instants, based on a monitored temperature vs. time function. Information relating to a plant health is derived from the temperature exposure parameter.

An assimilation lamp device (101; 800) for stimulating plant and crop growth comprises: a central lamp unit (10), comprising a body (14) and one or more LEDs (12) mounted to the bottom surface of the body, wherein the body acts as a heat sink for the heat generated by the LEDs. The device further comprises air stream generating means (42) for generating a downward air stream (43; 341), and heat transfer and exchange means for transferring heat from the body to the air stream, so that heat from the LEDs is used to increase the temperature of said downward air stream and is eventually used to warm the environment of the plants. A device controller (850) has a set point input (859) and generates control signals for the LEDs and the air stream generating means in conformity with an input signal received at its set point input.

A bundle beam UV LED ultraviolet light sweeping method includes: activating electrical power to input into a PCB to light up a bundle beam UV LED ultraviolet light bead and driving a motor to cause a polygonal multiple-reflective-surface aluminum mirror to rotate, ultraviolet light from the UV LED being projected toward the reflective surface, and reflected by the reflective surface to change light direction for successive back-and-forth home-position-returning sweeping, the light converting from lines into sectorial shapes that are connected to form a large ultraviolet light operation region. The device includes a rotating device having a motor of which a spindle is mounted with a polygonal multiple-reflective-surface aluminum mirror; an UV LED bundle beam light source assembly having a bundle beam UV LED ultraviolet light bead fixed on a PCB; and a fixing base having a main body and a plurality of mounting braces.

The invention is an autonomous wall garden system containing removeable trays, a water delivery system, a tray water level sensor system, and optional grow lights and user interface. The present invention provides a vertical plant growing environment that can be configured to monitor and, in certain cases automatically provide, the appropriate light, temperature, humidity and water for the specific plants in the garden.

A lighting arrangement (1) for use in a plant growing environment comprises a light source (5). The plant growing environment comprises at least a first plant container (11) and a second plant container (12) adapted to move relative to each other. The light source is arranged to illuminate a plant from below when the plant is provided in the first plant container. An angle of the illumination depends on a distance between the first plant container and the second plant container.

Systems, methods and computer-readable media are provided for entering a fail safe mode for a controlled agricultural environment (CAE). The CAE includes movable receptacle supports for holding plants. In response to determining a fault condition in the CAE or in environmental conditioning equipment for the CAE, operation of the CAE or the environmental conditioning equipment is controlled to effect a change from a standard operating mode to a fail safe mode. The standard operating mode corresponds to desired environmental conditions in the CAE and the fail safe mode corresponds to non-ideal environmental conditions.

In a device a crop is cultivated in an at least substantially daylight-free environment, wherein the crop is exposed in an at least substantially fully conditioned cultivation space (10) to actinic artificial light from an array of artificial light sources (30) present in the cultivation space. During a cultivation cycle a power output of the artificial light sources (30) is adapted to an energy absorption of a part of the crop (50) illuminated thereby such that the crop close to each of the array of artificial light sources is subject to an at least substantially constant and at least substantially mutually equal vapour deficit.

A mounting bracket for a lighting system includes a body portion having an elongated shape and defining a top side and a bottom side opposing the top side. The body portion defines, within the bottom side, a plurality of channels spaced apart along an axial direction of the elongated shape, wherein one or more channels of the plurality of channels is configured to receive a mounting portion of a linear light fixture of the lighting system. The body portion further defines, within the top side, a plurality of holes spaced apart along the axial direction corresponding to the plurality of channels, wherein one or more holes of the plurality of holes extends into a corresponding channel of the plurality of channels and is configured to receive a fastening structure therethrough.