Help with a Satsuma Mandarin in Trouble

[ccbnd]

Hello - hoping I could get some guidance as I have a very special tree not doing well. 

Our satsuma has been in the ground for a few years.  Over the last few weeks, it’s starting to decline and the last few days have seen lots of leaves curl inward, some are yellow and they are dropping to the ground and some of the leaf tips are brown and dry.  Please see photos below. 

Please let me know if you have any suggestions.  Could be a water issue (too little?  Too much?) or perhaps something else. 

Your help is appreciated.  Thank you!

[brian]

there is a Citrus subforum here you might get better responses.

[ccbnd]

Thank you for the suggestion, I appreciate it.  Will post there!

[Oolie]

Been reading about CVC, hopefully not that.

Definitely looking like it's not able to uptake the water.

[ccbnd]

Thank you - so appears to be overwatered?

[Oolie]

Not necessarily, looks like the water isn't making it to the leaves. could be lack of roots like gophers or girdling by rabbits if the tree was in my yard.