The Tropical Fruit Forum

http://www.freshplaza.us/article/8364/New-gadget-turns-old-fruit-into-alchohol

People on various forms say repotting should only be done in the spring.  Personally I have repotted in just about every months of the year with no problems at all, you can do as you feel best for your tree. The 5-1-1 mix is pretty straight forward. It is a blend of 5  parts small sized bark, 1 part peat and 1 part perlite. I don't use it, but it seems to be a good enough mix, especially for smaller sized trees.  For large trees in bigger containers, I don't know if it could give the tree enough anchorage to hold up a tree in fruit.  Looking at the limequat's leaves I would say it could possibly be from under fertilizing, or it is possible that they are just getting to be old leaves ready to be discarded.  A citrus tree does not waste anything.  When a leaf becomes to old to perform it duties, the tree removes the nitrogen from the leaf for use elsewhere in the tree, then discards it.   That's why old leaves begin to turn yellow before it is discarded.  Citrus leaves have a life span of just a little under 2 years (about 22 months). I can't say for sure as I have never used Foliage Pro, but 1/4 tsp/gallon does not seem to be enough nutrition for citrus variety. 

Does CRF stand for controlled release fertilizer?

I would add, that citrus are heavy feeders, requiring more nutrition than most plants.  1/4-tsp per gallon of a 9-3-6 fertilizer does not seem enough for citrus. To answer your concern about the yellowing of the limequat leaves as shown in the picture, first let me ask how old is this tree?   

I don't know if Juanita and Ponkan are the same tree or not.  The Juanita  tangerine tree I had grew pretty much straight up in a vertical manner.  i no longer have the Juanita tree.  I do  presently have a Ponkan tree (in-ground) and it's growth is also vertical and the fruit also have a neck. 

http://www.thepacker.com/news/greening-tolerant-citrus-varieties-gaining-interest

Once upon a time, 1994, to be precise, the USDA's National Agricultural Statistics Service counted 48,221 acres of citrus acreage in Martin County Florida, most of it in oranges. Now the USDA estimates there's about 2,700 acres left, and most of that — maybe all of it — will go out of production this year leaving 0 aces in 2018 because of Citrus Greening. .

I take back my comment (in fact I removed it) .  That certainly does not look like a shiranui  (Dekopon).  I agree with LaCasa it look like a Navel orange. You should telephone them and tell them you did not receive what you ordered.

When you have a soil salt problem, the drier the the soil around the root zone becomes the higher the salt concentration becomes.

The leaf curl on the young leaves was caused by insects.  This happened when the leaves were young and tender.  It's too late to correct it now.  Spraying the young leaves until they harden up with horticultural oil avoids the problem. A lot of your leaf burn looks to be from high soluble salts, You need to water deep to flush away the salts.  You should get your water tested also for bicarbonates.  If you water has high carbonates or bicarbonates, which it probably does,  each watering adds to your trees problems.  My well water had that problem and caused the same foliage problems.  I have sense switched to rain water. The second picture is an iron deficiency, probably caused by the high pH of the Arizona soil.

LaCasaVerde, coloring of citrus fruit and maturity of citrus fruit are two different things.  Citrus fruits really don't color up, what actually occurs is that  the green chlorophyll pigmentation is dying out due to the cool autumn weather.  As the chlorophyll fades out the yellow/orange pigments once hidden can now show through.  In the tropics it is not cool enough to kill off the chlorophyll pigmentation so they stay greenish  but are mature.

Luak, as wrote above, our farm has a fork lift.  It will be easy moving the tree outdoors during the summer and back into the greenhouse during the winter with the fork lift.  Also on days where hail is likely, I'll just use the fork lift to put the tree inside the barn for the day. While transplanting the NZL, I accidentally  broke off a couple small branches, so I am rooting them.  The New Zealand Lemonade is a lemon hybrid , so I suspect it will root easily, but not sure. Actual  lemons are easy to root -- we'll see.

My Xie Shan also had a big crop this year.  I should have thinned the crop by about 50%.  As a result I had a lot of small size fruit.  Citrus fruit draw all of their required energy supplies to grow into mature full size fruit from just the three closest leaves to the fruit,  not from the  entire tree in general. Therefore, if you thin the fruit down to one fruit per each set of three or four leaves, the tree will produce the largest crop of full size fruit possible.

Valencia oranges are notorious for regreening.  This is caused by leaving the fruit hanging on the tree for an extended time and warm temperatures.  The color of the peel on regreening Valencia oranges has nothing to do with the maturity of the fruit.  You can find a lot about this phenomenon by typing "Valencia regreening" on the Internet.