Arizona Sweet leaves are turning yellow

Question

Tree seems to be drying up, but has been watered regularly.

Answer 1

Orange trees planted in the ground will need 1 to 1 1/2 inches of water per week.
If this a newly planted tree you may need to increase this amount.

If this is a potted citrus tree, daily water is generally needed and if temperatures are above 85 degrees you may need to water twice a day.

I am listing some articles to refresh you on the care requirements.

https://www.gardeningknowhow.com/edible/fruits/oranges/growing-an-orange-tree.htm
https://www.gardeningknowhow.com/edible/fruits/oranges/orange-tree-container-care.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/fertilizing-citrus-trees-best-practices-for-citrus-fertilizing.htm