Are you watering enough?
Posted: July 5, 2012
You may be surprised at how long it takes to give your plants an inch of water. For example, if you are using standard drip irrigation tubing with a flow rate of 0.45 gallons per minute per 100 feet it would take just under six hours to apply one inch of water with one line of irrigation per bed (6ft centers). If you have two lines per bed it would take less – about 3 hours.
Penn State’s Elsa Sanchez and Bill Lamont give more details about determining how long to run drip irrigation for vegetables here.