71.   One culprit in overwatering desert plants is the automatic irrigation system.

72.   One man said villagers persuaded leaders to build an underground irrigation system to save water lost to evaporation.

73.   Overhead sprinklers and irrigation systems are effective for large lawns but waste water when it comes to trees, shrubs and small plants.

74.   Packing houses are flooded, expensive farm machines sit submerged, wells are fouled, and irrigation systems are clogged with silt or were swept away.

75.   Rather than large-scale growing of food crops, the archeologists said, Caral apparently had an extensive irrigation system, but primarily for growing cotton and gourds.

76.   Rivers have dried up, and many irrigation systems have been destroyed as a result of the war.

77.   Rivers have dried up, and many irrigation systems have been destroyed because of the war.

78.   Shut down outdoor irrigation systems to prevent freezing.

79.   Some seaside gardeners such as Elaine Bernstein, who maintains a much admired garden in Cummaquid abutting a marsh, uses an inground irrigation system.

80.   Six months ago a foreign company discovered an ancient irrigation system and attempted to smuggle it in pieces to the West.