Calamondin-odd brown stripes on leaves (!)

[thewallace]

I have a 40 year old Calamondin with an affliction I cant diagnose. I keep it in a large ceramic pot and being I'm in New England I keep inside in the Winter and move it outside in the late Spring.

For the last two years each Spring, many leaves will get a brown stain which oddly will usually only show on one half (see attachment). It doesn't scratch off, its internal to the leaf. This last year I repotted it in a new container with new soil and changed fertilizer. But the same brown stain appeared again this Spring. Has anyone seen this before?   

[achetadomestica]

I have seen leaf miner cause this in my citrus leaves

[Jungle Yard]

To me it looks more like a burn, may be some deficiency. Leaf miner damage looks different.

[achetadomestica]

To me it looks more like a burn, may be some deficiency. Leaf miner damage looks different.

I think you are right when it's leaf minor there are tracks on the underside where the insects
tunnel.

[brian]

FYI - There's a dedicated citrus forum on this site where others may have more experience. 

[xmario]

 I am more curious of how a 40-year-old Calamondin looks!!
But anyway i would start with some minor nutrients applications including iron as well.
Also I would have opened this in the citrus category for more related visibility

[brian]

Here's an old one in a pot I see at a NJ nursery.

[thewallace]

Thanks for the tip, I'll repost in the correct group.

Its history is that my mom got it as a cutting from a Coca-Cola mail-in promotion in the late 1970s. Its not to hard to guess that bitter orange is an ingredient in the soda. The tree may not look that large but its been mildly bonsai'd over the decades and heavily cut back. I got no blooms last year which I blame on the brown streak issue.

[brian]

Thats a really nice looking little tree.