Turn down the flow. Water infrequently, but thoroughly. Adjust equipment for a larger water droplet size to help reduce evaporation. Frequent shallow watering causes plant roots to concentrate close to the surface, making the plant more susceptible to water fluctuations. Loosen the soil surface and use mulches.
Compacted areas absorb water slowly.
Most mulches help to keep soil surfaces loose and receptive to water absorption. Follow directions for operating and maintaining all irrigation systems. Check regularly for leaks, malfunctions or worn parts. Keep your garden well-weeded to eliminate competition for water. Also, consider removing surplus plants from over-crowded beds to ease water demands.