A water irrigation system is provided for irrigating a plurality of zones. The water irrigation system includes a set of acoustic pressure modulators for generating a set of modulated acoustic pressure signals that include an actuating pressure signal and a de-actuating pressure signal. The set of acoustic pressure modulators include different subsets. The different subsets control different ones of the plurality of zones by selectively providing the same or different ones of the actuating and de-actuating pressure signals to the different ones of the plurality of zones at any given time. The water irrigation system further includes a set of acoustically-reactive irrigating elements disposed in each of the plurality of zones, each including an acoustically-reactive oscillating disk based water emitter. The acoustically-reactive oscillating disk based water emitter is selectively actuated or de-actuated responsive to the actuating pressure signal and the de-actuating pressure signal, respectively.

An irrigation implement may include a member having a first end a second end. The first end may be open and the second end may include a pinched seal. The member may further define an opening disposed toward the second end, and be configured to enable an irrigation tube to be attached to the opening such that the opening is sealed by the irrigation tube. A process may use a pinching and heating process to self-seal the irrigation implement on one end in producing the irrigation implement.

An emitter comprising a pressure responsive section and at least one feature defined by a floor, a first rail, and a second rail. The at least one feature being tuned by at least one of rail to rail distance, rail height, rail width, rail corner, vertical rail gap, transverse rail gap, external rail, floor thickness, floor profile, tip height, tip clearance, feature density, feature contour, feature angle, and feature thickness.

A drip emitter for subsurface irrigation includes a valve chamber defining a hollow interior, an entry port and at least one exit port. A flexible diaphragm is mounted in the hollow interior of the valve chamber for movement in response to pressurized water being supplied to the hollow interior through the entry port. The drip emitter further includes a tortuous path water flow channel that limits the flow of water from the hollow interior of the valve chamber to the at least one exit port. A closure member is moved by the flexible diaphragm to open the at least one exit port when pressurized water enters the hollow interior to allow water to be discharged through the at least one exit port. A spring moves the closure member to close the at least one exit port when the supply of pressurized water is shut OFF.

A hybrid emitter of low discharge for water or solutions is inserted and welded into a pipe during the production phase. The hybrid emitter bears at its convex and cylindrical surface local protrusions that are covered completely from the pipe which is swelled locally. The water exits preferably from two nozzles that are created within the protrusions by the cutting-off of the tips, which protrusions protrude and after cutting-off, said nozzles eject the water almost cross-wise to two opposite directions and at short discrete distances left and right of the pipe. A method for welding of emitters and accessories into a pipe where the emitter or the hybrid one with or without protrusions on the outer surface, are inserted into the pipe during its production phase.

An irrigation management system which allows for modulation of the watering gradient along crop rows. The system may include dual drip lines which allow for selection of gradients based upon the time each of the dual lines is active. The system may utilize pressure sensitive valves which select drip lines based upon the inlet feed water pressure. The system may include drip emitters which modify flow rates based upon inlet feed water pressure.

A drip irrigation tube is provided with metering elements comprising respectively inlet regions, through which the water in the tube arrives in the metering elements, metering regions, formed by a labyrinth channel, which is delimited by two lateral walls, a cover and the walling of the drip irrigation tube and in which a pressure reduction of the water flowing through takes place, and outlet regions, through which the water emerges out of the drip irrigation tube via outlet openings made in the tube walling. The respective outlet region borders at least on one lateral wall, of the labyrinth channel; at least one region of this lateral wall is covered by an elastic membrane forming a portion of the cover, so that the lateral wall is able to be lifted off of the tube wall by means of the elastic membrane and forms a passage through which the water from the labyrinth channel arrives directly in the outlet region. The water flowing through the metering element can thereby be metered depending upon the water pressure in the drip irrigation tube.

A system and method for water irrigation system are provided. The water irrigation system includes a set of pressure modulators for generating a set of modulated pressure signals that include an actuating pressure signal and a de-actuating pressure signal. The water irrigation system includes a set of irrigating elements. Each of the irrigating elements includes a water emitter connected to a pressure sensing circuit. The pressure sensing circuit is for actuating the water emitter responsive to the actuating signal and de-actuating the water emitter responsive to the de-actuating signal. The water irrigation system further includes tubing for carrying water for irrigation and the modulated pressure signals to the irrigating element.

A system and method to facilitate the growth of a plant in a building. The system includes a substrate that is substantially solid, an inflatable raft, or that has an upper member and a lower member with a space therebetween to establish an interior of the substrate. Either form of substrate includes one or more plant retainers and a set of one or more gaseous fluid delivery ports located regularly or irregularly throughout the substrate, including localized in a vicinity of each of the one or more plant retainers. The system further includes a climate delivery subsystem including a gaseous fluid source, a gaseous fluid delivery apparatus, such as a pump and one or more conduits in the substrate, wherein each of the one or more conduits is in communication with each set of the one or more gaseous fluid delivery ports for delivery of the gaseous fluid to an underside of the plant, wherein the one or more conduits are coupled to the gaseous fluid delivery apparatus.

A thin walled irrigation pipe has a tensile layer formed as a continuous strip upon an outer side of the pipe for increasing tensile strength of the pipe. The tensile layer includes a higher tensile strength than material of the remainder of the pipe outside of the tensile layer.