Generally, yes. Here's a good page to help you figure drip rate to the size of area you need to water:
http://www.digcorp.com/diy/inst_3.htm
Take the gallons per minute that's coming out your hose times how many minutes of those 4 hours it's full on over a month and compare it to the recommended drip rate for the area and I think you'll find far less water being used to keep the area as moist as it ought to be.
...and to boot you'll have happier plants.