UV fluorescence of active acacia bark (and maybe more?) - help wanted!
if you use a 365nm or lower UV light, as in, not a purple light, actual ultraviolet that you can barely see except for what fluoresces, then you should be able to tell the difference between trees. someone told me once that it allowed them to identify akaloid content differences shining on the trees leaves as a whole, and the ones that looked brighter, yielded more. For bark this should run true as well.
Otherwise, learn to do TLC, its pretty easy actually. even paper will work if prepared a little bit. it should allow you to compare field samples against one another. you either stain it, or, use a UV light, and just compare the DMT bands against each other in terms of area and brightness. theres a bit of an art to it but the results should be fairly obvious, bigger/brighter = more.
If you have a large vaporizer, loading a chunk of grinded up bark and then blowing that into an alcohol soaked cotton ball stuffed in a tube, to filter all the smoke, could also work if you wish to test multiple trees and, accrue a large number of samples for comparison, especially over different times of day.
As always, please bear in mind that removing trunk bark kills trees, and, at the ends of branches, twigs are almost all bark by dry mass once you remove the leaves, even factoring in wood content. you can get by just through pruning, leaves contain spice too, this is for your enjoyment ultimately, be as ethical as possible unless you are prepared to process the entire tree.
If you time it right and have access and time, DMT content can rise or redistribute by 2-3x easily, sometimes more. i believe, early morning + shortly after rain. also if you have time, fertilize the tree with an ammonium phosphate based fertilizer, or ammonium sulfate if DAP/MAP is unavailable, waiting a week for it to absorb may turn out to be well worth it. any instance where DMT gets produced or moved around, is multiplied considerably by the presence of surplus ammonia, which doesnt really happen much naturally to the scale some N pellets can do. it works better on things like DMT grasses, but it still applies universally, triptamines, or really any amino compounds, are modulated by the availability of ammino building blocks, like ammonia.
not with confusa but, day to day, some people have tested acacias and found DMT content could vary between decent, to functionally nil, with loads of speculated reasons as to why.