A photo-selective light spectrum-modifying net for use in citrus fruit production, the net comprising a woven array of parallel and mutually spaced first threads and an array of parallel and mutually spaced second threads, the second threads being inclined to the first threads to define an array of openings between the first and second threads, wherein the first threads are uncolored and composed of a first polymer which is selected from a polymer incorporating a white pigment or dye, a transparent polymer or a translucent polymer, and the second threads are colored red and composed of a second polymer which incorporates a red pigment or dye, the second threads being adapted to transmit, scatter and reflect electromagnetic radiation in the wavelength range of from 640 to 680 nm. Also disclosed is a method of producing citrus fruit using the net.

A daylight redirecting window film having a layered structure with a total thickness of less than one millimeter and having a first optically transmissive film, a second optically transmissive film approximately coextensive with the first optically transmissive film, an intermediate layer of a relatively soft optically transmissive material disposed between the first and second optically transmissive films, a parallel array of linear three-dimensional structures formed in a space between the first and second optically transmissive films, a layer of an optically transmissive adhesive coating a surface of the first optically transmissive film, and a two-dimensional pattern of light scattering surface microstructures formed in an outer surface of the second optically transmissive film. The parallel array of linear three-dimensional structures defines a parallel array of linear channels, and each of the linear three-dimensional structures has a total internal reflection wall extending transversely through a portion of the layered structure.

The present invention relates to an agricultural film (AF) comprising at least one copolyamide, wherein the copolyamide has been prepared by polymerizing at least one lactam and a monomer mixture (M). The present invention further relates to a process for producing the agricultural film (AF) and to the use of the agricultural film (AF) as mulch film, as silage film, as greenhouse film or as silo film.

An atmospheric water generation system absorbs water from an atmospheric air stream into a desiccant flowing along a flow path of a closed desiccant circulation loop. To ensure that the desiccant remains within the closed desiccant circulation loop, the atmospheric water generation system encompasses a membrane-based water extraction device that the desiccant flows through. The desiccant flows through the membrane-based water extraction device on a first side of a membrane, and the membrane separates the desiccant from a water-collection flow. Water absorbed into the desiccant passes from the desiccant, through the porous membrane, and into the water-collection flow, at least in part due to differences in temperature and/or pressure characteristics of the water flow and the desiccant flow. Water collected within the water-collection flow is directed to a storage tank for usage.

Portable ground cover devices, kits, and methods of assembly and use. A ground cover device includes a frame that may be assembled to a size suitable for use to cover a garden. A cover may be attached to the frame such that the cover is within an interior of the frame when assembled. When in an expanded configuration, the device may be placed over the garden to encourage plant growth and protect the garden from adverse weather, wildlife, and other environmental stressors. The device may be transitioned from the expanded configuration to a retracted configuration for storage or transport of the device when not in use.

There is described a method of growing a plant having at least one light absorbing pigment, the at least one light absorbing pigment absorbing optical energy at absorbing wavelengths. The method generally has illuminating the plant growing light, the growing light having optical energy within at least two spectral regions each encompassing a given wavelength, the given wavelengths being out of tune with the absorbing wavelengths of the at least one light absorbing pigment, the at least two spectral regions being selected from a group consisting of a first spectral region below 400 nm, a second spectral region at about 430 nm, a third spectral region at about 480 nm, a fourth spectral region at about 595 nm, a fifth spectral region at about 640 nm, a sixth spectral region at about 660 nm and a seventh spectral region at about 675 nm.

A multi-source ground-to-air heat transfer system is configured to store thermal energy during a cooling/dehumidifcation mode of operation for future use during a heating mode of operation. The multi-source ground-to-air heat transfer system utilizes a ground loop that is configured under an enclosure, such as a greenhouse, and is in thermal communication with a thermal reservoir medium to conduct and store heat. A thermal exchange fluid is pumped through the ground loop and ground heat exchanger and may receive heat from a condenser during a cooling/dehumidification mode of operation and may liberate heat to the evaporator during a heating mode. The enclosure air may receive heat from the heat pump during a heating mode and may liberate heat to the evaporator during a cooling/dehumidification mode. The heat exchange system may employ a heat pump having a reversing valve to change the mode of operation.

A radiational cooling film providing a variable wavelength which determines a solar heat shielding rate according to the internal temperature of a facility and changes a wavelength conversion section of the film exposed to sunlight to radiate a necessary wavelength according to the growth stage of plants, and a wavelength conversion device and system using the same are provided. The radiational cooling film providing a variable wavelength includes a base layer including a first region and a second region on one surface, a heat barrier layer disposed on a part of the other surface of the base layer, the first region being provided with the heat barrier layer, and the second region being not provided with the heat barrier layer, and a wavelength conversion layer including a plurality of wavelength conversion sections separated from each other in each of the first region and the second region.

A stabilizer mixture comprising a sterically hindered amine light stabilizer, a triazine UV absorber and a benzophenone UV absorber.

A foldable screen for a greenhouse is described. A foldable filter for greenhouse, comprises a foldable substrate and at least one stack of films on the foldable substrate, wherein said at least one stack of films is adapted to —reflect solar infrared radiations in the spectral range from 850 nm to 2,000 nm, and —be transparent to solar radiations in the spectral range from 400 nm to 750 nm, wherein said at least one stack of film comprises: —a first layer of TiO2, ZTO, Si3N4 or NbOx; —a second layer of Ag on top of the first layer, and —a third layer of dielectric on top of the second layer.