Q.Mature grapfruit tree leaves curling and marked
This 20-year-old grapefruit tree has been producing exceptional harvest each year since we purchased this property in Phoenix Arizona 2 1/2 years ago. Recently we have noticed curling of the trees with some discoloration and markings on both sides, primarily the top side. Water is supplied daily and none of the other citrus trees on our property of Shawna similar problem. The tree was last filled citrus fruit a proximally Easter.
Downtoearthdigs
Answered on May 5, 2017
Looks like Leaf Miner damage.
These links will help you.
https://www.gardeningknowhow.com/edible/fruits/citrus/curling-citrus-leaves.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/leaf-miner-control.htm
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