For the longest time I have not been able to purchase a white grapefruit at the supermarket. All they ever have any more is red. Good thing I have a Seedless March grapefruit planted in the ground. Presently it is still a semi-small tree, which does not produce a large quantity of fruit. In just a couple years the tree should really pick up .
Never seen symptoms as shown on your tree's leaves. My impression is that it might be caused by something through root up take. Have you applied anything different to the soil?
I have grown several lemons from seed. The few that I grew never reached fruiting stage. When I got rid of them they were approximately 3 feet high. A seedling lemon has an almost straight up growth pattern. What you read on FB was a fairy tale.
I've taken Colchicine for gout, the strength of the pill is 0.6 mg. I do not know the strength needed for triplorid use, but one could dissolve enough pills. As mentioned a lot of caution would be required when working with colchicine.
I wonder if the Prague Citsuma that has incomplete flowers can be "pollinated" with gibbereillic acid the same way clementines are pollinated using gibberellic acid.
Any reading material on Dekopon that I have ever found is on the Internet, such as some o of he links shown throughout this thread. Typing in the word Dekopon will of course bring up many articles.. I've never seen any info in book form.
patchofpentaphyllum in Florida you can purchase Dekopon (aka shiranuhi) from Harris citrus. Just type in Harris Citrus into the Internet and you will easily find them.
Most citrus varieties are not pruned, but let to grow into their common round shape. Dekopon is different. In Japan Dekopon are trimed almost exactly as a peach tree is pruned.
HLB is not being controlled in China, or anywhere else as far as I know. It is illegal to bring plants into this country. That is how HLB got started in Florida.
HLB (citrus Greening)discovered in La Habra, Anaheim and Garden grove California All put in quarantine. I think the HLB finds in California will be showing up faster and faster.