[Arid_gardener] Question from Home-Hort WWW page

[idnb@velocitus.net]

We are new to the Valley - East Mesa area.  Our new home has a medium sized tif lawn in the back yard.  After having lived here for about 4 months, we have begun to notice brown splotching in the grass.  The former owners had an automatic sprinkler system set to water about 3 times in the morning and 2 in the afternoon, running only about 3 minutes per section.  We have been told to fertilize with 16-16-16 and have done so twice since moving in.  I am seeking advice on how to prevent this "browning" and any other helpful information anyone might have for us.  Thanks very much.