Does this work on other tropical fruit trees with taproots, such as cherimoya?

Yes i agree time to dose up! They keep reporting deaths of younger individuals with no prior health conditions while at the same time reports of old frail folks coming through just fine, It would be interesting to know the diets of these people and also there amount of daily exercise.
I know the focus first is to identify drugs to sell and treat condition.

You should be able to get the soursop to fruit with zinc + boron + good irrigation. Caimito may require boron as well. (Based on personal sperience.) Soursop can fruit at around year 3 and caimito around year 3 - 4 with proper care / nutrition.

Mamey could also be lack of boron and / or irrigation (if it flowers and sets tiny fruit but then aborts them).

I haven't tried it (yet), but longan can be coaxed into fruiting with application of bleach.

Quote from: gnappi on February 11, 2020, 03:58:09 PM

Quote from: FV Fruit Freak on February 11, 2020, 12:53:34 PM

Gary, calling someone you’ve never met a “dickhead” for absolutely no reason other than you misinterpiting their wording by thinking they were sounding “snippy” when they weren’t, seems pretty personal to me, and will get you nowhere...you should have just buckled up, handled it, and kept YOUR thoughts to yourself..YOU started this, now let’s drop it and go back to what really matters on here which is tropical fruit growing. Pretty sure no one on this forum wants to hear you and I go back and forth with this BS. Sorry if I hurt your feelings, time to move on...I hope you have great success in your garden. Peace.

Nope, no hurt feelings but you can't take someone stepping on your parade.

I'll continue to challenge such childish behavior. I dare you to challenge someone like you did in a PM in person, you won't because you thrive on the anonymity and safety of the web. Maybe the real Nate Dogg had some nerve, you don't.

Blah, blah, blah...