Fruits and Nuts: Is my Mandarin tree gonna die? Curled up and burnt leaves..., 1 by nerp

nerp wrote:
Last year, we bought a Mandarin tree and plopped it in the ground - and it has been producing fruit since the day we got it home. I've gotten so used to plucking a Mandarin for breakfast or a midnight snack that I can't bear to think it might be sick ... so, perhaps I'm being alarmist, but ... Here's a picture of these curled up burnt looking leaves on our tree. Are these an indication of a problem? Should we trim these branches back? Could it be a fungus? New leaves seem unaffected and the tree is still fruiting, but .... I don't want to ignore a warning sign.