Patent ID: 7237982

Claim:
An agricultural implement for installing an irrigation system, said implement comprising: a) a frame structure having front and rear ends including a hitch for attaching said frame structure to a tow vehicle; b) an earth-excavating chute adapted to form a trench having a given width and a given depth attached to said frame, said earth-excavating chute having a forward earth intake end and a rearward earth discharge end, wherein said earth-excavating chute has a longitudinal axis and is downwardly inclined such that said earth discharge end is higher than said earth intake end; c) a first spool support means attached to said frame structure to support a spool of moisture barrier liner material beneath said chute between said earth intake and discharge ends and transverse said chute longitudinal axis to allow the liner material to unwind from the spool and be covered with discharge earth during an irrigation system installation operation; and d) a spool of moisture barrier liner material supported on said first spool support means, said moisture barrier liner material having a width at least equal to the width of said trench plus twice the depth of said trench.