This term usually
applies to the typical lawn irrigations system
comprised of a set of underground pipes with
sprinklers scattered around the lawn. It is set on a
timer to deliver the water at specific intervals
throughout the week. Generally, these work great on
turf.
However, they
may not be as kind to nearby trees, shrubs and mixed
beds and borders. If the system is set to properly
care for the turfgrass, it may be delivering too
much water for some of the other plants especially
if the soils are poorly drained.
For more see...Lawn Irrigation