Rule of thumb: Be able to deliver at least one acre inch of water per week to the root system of the plants.
One Acre Inch of Water is approximately 27,000 Gallons.
For orchards with one or two emitters per tree that have been grower installed into polyethylene trickle tubing, the formula for calculating the number of hours of irrigation per week that is necessary to apply an acre inch of water is as follows:
