Irrigation system

An irrigation system for a field area, comprising:

• a source of water under pressure;
• a primary water line extending from said source of water to the vicinity of the field area to be irrigated;
• at least one header water line in fluid communication with said primary water line and extending therefrom;
• a pulse valve imposed in said header water line;
• a plurality of distribution water lines in fluid communication with said header water line and extending therefrom downstream of said pulse valve;
• a plurality of spaced-apart, in-line emitter valves imposed in said distribution water lines and having a water discharge orifice for discharging irrigation water to the area immediately adjacent thereto;
• said primary water line, header water line and said distribution water lines being buried below the surface of the field;
• said irrigation system comprising a center pivot irrigation machine which irrigates a generally circular portion of a square field;
• and a primary water line extended to at least one of the unirrigated corners of the field;
• said distribution lines being buried beneath the surface of the corner of the field.

An irrigation system for a field area, comprising:

• a source of water under pressure;
• a primary water line extending from said source of water to the vicinity of the field area to be irrigated;
• at least one header water line in fluid communication with said primary water line and extending therefrom;
• a pulse valve imposed in said header water line;
• a plurality of distribution water lines in fluid communication with said header water line and extending therefrom downstream of said pulse valve;
• a plurality of spaced-apart, in-line emitter valves imposed in said distribution water lines and having a water discharge orifice for discharging irrigation water to the area immediately adjacent thereto;
• said primary water line, header water line and said distribution water lines being buried below the surface of the field;
• each of said distribution water lines being expandable under pressurization.