Lemon Trees
Q.

How to determine water needs for citrus trees using drip system

Zone Phoenix, AZ | bigbob added on June 15, 2012 | Answered

Live in Phoenix area. Trees are not fully mature but not babies. Installed drip system and installer said run system 6 minutes every day at 1 a. m. There is a bubbler in the well for each tree. There are 2 lemons and 1 tangerine, which produced fruit last season. How can I be sure they are getting enough water? We will be gone for the summer. Can you help me?

A.
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Nikki
Certified GKH Gardening Expert
Answered on June 16, 2012

The rule of thumb is 2" of water per week. Since you are on a drip system, I would recommend taking one of the lines out of the ground and measuring how long it takes to fill a small cup to 2". That will determine how long to run the drip system for proper watering. Since you live in a much warmer climate, I would water two times a week for at least 15-20 minutes (longer if it has been very hot and dry) so that at least 2-3" of water go in the soil every time you water. This will encourage deep root growth, which will help it survive in the higher temperatures.

Here is more information:
https://www.gardeningknowhow.com/edible/fruits/citrus/tip-on-water-requirements-for-citrus-trees.htm

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