An LED light source unit for plant cultivation includes: at least one first light emitting diode chip emitting light of 430 nm or less, at least three types of phosphors excited by the at least one first light emitting diode chip, and combined light emitted from the first light emitting diode chip and the at least three types of phosphors produces a basic spectrum of white light having a color temperature of 5000K or more.

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.

An agricultural work system has an agricultural work machine to which at least one mounted implement can be fitted via at least one implement interface. A work machine configuration is associated with the work machine, and a mounted implement configuration is associated with the mounted implement. A drive unit is provided which acts via a drivetrain on ground engaging elements, particularly on tires. A system control and a control/display unit associated with the work machine are provided. It is proposed that the system control is adapted to determine the mounted implement configuration, to calculate the implement interface load transmitted via the implement interface based on the determined mounted implement configuration, and to evaluate and/or optimize the work machine configuration based on the calculated implement interface load.

A gardening apparatus includes one or more of a base, a fluid reservoir, and a plant tray or support disposed on the reservoir. The support is adapted for receiving one or more modular plant inserts, and can define a flow structure for channeling fluid to each insert. A pump supplies fluid from the reservoir to the plant tray or support, with a light assembly adapted to generate a spectrum of light for growth of plants from the inserts. A processor is configured for controlling fluid flow from the pump, the light spectrum generated by the lighting elements, or both. For example, the processor can use a dynamic recipe, algorithm or control schedule to modulate the fluid flow or spectrum based the plant type, growth stage, height, plant health data, digital phenotyping data, or ambient conditions, or a combination thereof.

Solid-state lighting devices and more particularly light-emitting devices for horticulture applications are disclosed. Light-emitting devices are disclosed with aggregate emissions that target chlorophyll absorption peaks while also providing certain broader spectrum emissions between the chlorophyll absorption peaks. The aggregate emissions may be provided by light-emitting diodes (LEDs) that emit wavelengths that correspond with certain chlorophyll absorption peaks and lumiphoric materials that provide broader spectrum emissions. The aggregate emissions are configured to have reduced emissions from lumiphoric materials in ranges close to certain chlorophyll absorption peaks, such as above 600 nanometers (nm). In this regard, light-emitting devices according to the present disclosure provide the ability to efficiently target specific chlorophyll absorption peaks for plant growth while also providing suitable lighting for occupants in a horticulture environment.

Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.

An aeroponic system for supporting efficient low-resource-usage plant growth comprises a housing comprising one or more openings and one or more root chambers; one or more sealing members configured to substantially conform to a stalk of a plant and to substantially isolate a canopy of the plant from the one or more root chambers; one or more root chamber sensors; one or more nutrient storage reservoirs for storage of plant nutrients; one or more air-assisted nozzles configured to introduce atomized nutrient solution into the one or more root chambers; a temperature control system configured to control a temperature of the one or more root chambers; and a control system configured to control the temperature control apparatus and the one or more air-assisted nozzles to maintain environmental parameters associated with the one or more root chambers within desired parameter ranges.

Plants are optimally grown under artificial narrowband Photosynthetically Active Radiation (“PAR”) of multiple colors, and color palettes, applied in but partially time-overlapping cycles. As well as a long, growing season, cycle, the colored lights are cyclically applied on a short, diurnal, cycle that often roughly simulates a peak-season sunny day at the earth latitude native to the plant. Bluer lights are applied commencing before redder lights, and are likewise terminated before the redder lights. Infrared light in particular, is preferably first applied at a time corresponding to early afternoon, and is temporally extended past a time corresponding to sunset. The colored lights and light palettes preferably rise to, and fall from, different peak intensities over periods from 10 minutes to 2 hours, and relative peak intensities of even such different colors as are used at all vary up to times two (×2) in response to differing PAR requirements of different plants. Computer-controlled colored LED lights realize all.

A multifunctional light source assembly and a multifunctional desk lamp are disclosed. The multifunctional desk lamp includes a base assembly, a lamp head assembly, and a lamp arm assembly; one end of the lamp arm assembly is connected with the base assembly, and the other end is connected with and supports the lamp head assembly; the lamp head assembly is internally provided with the multifunctional light source assembly, the multifunctional light source assembly includes an illumination LED chip, a plant grow light LED chip and an ultraviolet LED chip. The illumination chip, the plant grow light chip and the ultraviolet chip are respectively connected to a controller, which respectively controls the three chips, through the on and off of currents, so that functions such as illumination for reading and writing, sterilization, plant growth assistance can be achieved.

A light emitting device for plant growth includes: a light emitting diode (LED) chip configured to emit a first light having a peak wavelength of 380 nm to 445 nm; and at least one wavelength conversion material configured to be excited by the first light, and convert the first light into a light having a peak wavelength of 500 nm to 610 nm, wherein a photosynthetic photon efficacy (PPE) of an output light emitted from the light emitting device is 3.10 μmol/J or more.