What is wrong with my naval orange tree?

[lkm]

Hello!
Our orange tree has been doing wonderfully the last few years - we get tons of huge naval oranges. This growing season, I've noticed that the fruit is smaller and the tree is more sparse. About 30-40% of the leaves are curled and yellowed. I've also noticed this a bit on my meyer lemon bush, but the orange tree is really looking bad. I use the oranges for my home bakery and am heartbroken that there is something wrong with the tree. Photos below - how can I make it feel better? TY!

[DSotM]

Looks like combination of leaf miner damage and nutrient deficiency. Adding epsom salt may help with the yellowing.

[Johnny Eat Fruit]

I agree. Looks like leaf minor damage. No big Problem.

Cut off the affected growth and spray with Imidacloprid next May-June after the first flush.

To correct the mineral deficiency add rock dust around the parameter of the tree in Feb-March and water well to soak in.  This will cure any mineral problem. Reapply every 4-6 months.

Johnny

[NewGen]

You can probably get more answers by posting in the Citrus section.

[Triphal]

Also it should be corrected to 'navel' and not 'naval'.
15 years back while visiting the city of Vishakapattanam, called as Vizag, India's Naval HQs, I was offered to browse a book on Indian trees. I noticed in the section of citrus the variety of Naval oranges!. I mentioned to the friend of the author that it is 'navel' for belly button as one end of the orange has a similarity to it and not 'Naval' like in the Navy!