Abstract: An improved drip irrigation system and apparatus for installation of the irrigation system. The new irrigation system comprises an emitter line which is buried along the length of a trench that encircles a plant hole in which a plant is received. The emitter line connects to a water distribution line to more efficiently and effectively deliver water to the roots of the plant by discharging water into the trench. The emitter line, which is placed inside an outer pipe, has a plurality of emitters that discharge water into the interior of the outer pipe. Water flows to the roots through discharge openings in the pipe. The new apparatus has plant hole and trench forming tools configured to simultaneously dig the plant hole and cut the trench around the plant hole, a mechanism to rotate the tools and a mechanism to raise and lower a frame which supports the tools.