I'm guessing its just a response to the cold soil temperatures we had this winter. When soils are cool, plants (especially citrus) have a hard time pulling nutrients out of the soil. When the weather warms up the symptoms usually dissapear. This is one reason why it isn't beneficial to fertilize in the winter - plant roots are pretty inactive at this time of year and can't process the nutrients. As long as you followed the recommended amounts when applying your fertilizer your tree should be fine. In case you need more information on fertilizing, use the U of A publication located at the link below. A guide to common nutrient deficiencies and herbicide damage can be found at http://cals.arizona.edu/pubs/crops/az1007/contents.html Here is a link that might be useful: Fertilizing citrus

Dear Stephoney, I don't want to try to give you too much information, but I will attempt some help.. a suggestion first, then a couple questions.. you must put your tree in front of a window along with offering supplemental grow lights (both are needed for the trees indoor survival). I know you said your windows all had vents next to them (on the floor or ceiling?), so do mine (on the floor)- what I do in my kitchen is cover the vent with a piece of cardboard cut just to fit the vent, then I have a heavy ceramic frog 'knick knack' that I put on top of the vent to hide the cardboard (and to weight it down when the heat comes on). If your vent is in the ceiling near the window I would still find a way to cover it up and let the tree be in front of the window to bask in the sunlight- they need a lot. Now, when you repotted you did not say what size it 'was' in, and what size pot you repotted in to. Hopefully you did not go more than the next size larger, this along with the lack of sunlight would help explain why the tree is still so wet. You should never go more than the next size larger when repotting. Please also check really close for bugs (scale, mites, white fly, etc). Most times they are extremely hard to see unless you really get close. If you find bugs, try spraying them off in the shower (cover the soil so you don't water the tree anymore -you just want to spray the leaves and trunk)- I would not put any strong chemicals on the tree in the state that it is in. Sorry to be so long winded, lol. Meyer lemons seem to be the most finiky tree of all to grow- praying over the tree may help also. Just my humble two cents :)

In my opinion, you may have up to three problems at same time. Too much fertilizer, too much soil moisture and sunburn. If I were you, I would start again with a porous soil (search for "5-1-1 mix"), don't fertilize and no direct sun for a time. When temperatures reach 35º C, move to a cooler site. When you see new growth, you can return to a standard fertlizing schedule and sun light. I recommend starting with half strength of a soluble fertilizer.

I transplanted some citrus trees with the help of a worker who had done it professionally many times. For a tree with a 2" (5cm) trunk, we tried for a root ball about 18-24" in (61cm), 24" deep and that's a heavy root ball, more than one person can lift. Your tree looks like its 6-8"(15-20cm) in diameter so the root ball (and the pot) must have been pretty large. Around here(S.Calif) when older trees are moved, they have wooden containers built around the root ball, I don't think there are pots that large. And such a large pot would probably be easy to break when moved (with a forklift or a crane). So I also wonder if you really had a root ball appropriate for the size and age of that tree. BTW, my transplanted citrus didn't thrive and died after a few years. The top of the tree trunk looks mostly dead to me (at least on the right side) and it's hard to imagine spending any time trying to save that part. And I'm the optimistic type who in the past has tried to save half dead trees. I think the bug holes are just another sign of dead wood. I agree that the buds down near the bottom may be your only chance to save the tree and there's no reason to leave any of the dead/dying parts on. You didn't mention the variety of citrus, but if one of the shoots or branches on the left side is nice and green, maybe you could use it as scion wood and try a bark graft into the remaining stump. Even if the roots are healthy, it's still going to take some time for those buds to start producing fruit. So buying a replacement tree in a 5 gal container is a good idea. You can leave it in the container for years. In my humble opinion, you can never have too many citrus trees, especially when you live in Spain.