Radium Radium Radium.... your anal antics never seas to amaize me... How long have you been taking ritalin for at the time of noticing results? How long & how often were you pissing on your cacti before you started taking ritalin, and how long after pissing on cacti w/ritalin urine did you notice results? I would also like to know how often you take ritalin (amongst ALL OTHER psychoactive substances you ingest on a regular basis--something tells me this isn't the only trick up your sleeve.), what daily dose of ritalin, among other substances, do you currently take (in mg, that is, if you do indeed take it daily), how long how you have been watering your trichos with this drug-rich-piss for, and if you could post for us some before ritalin and after ritalin pics for evidence that it works. P.S. if ritalin was only occasionally used or if trichs were raised under differing physical conditions, these results would be invalid.
Also, I'm curious to know how watering cacti with acidic liquids could alter their biochemistry/growth rate/pup rate/ etc. compared to how most human beings water our cacti (rain & waste-water from our AC drips). Another thing is that I am wondering why you are assuming ritalin, and not time nor lighting nor act of fate/santajesusgod nor some other drug/hormone has been causing this up-tick in pups. Again, we cannot be entirely certain about this unless MORE of us get put on daily doses of ritalin and/or other cocaine derivatives (perhaps daily coca leaf/tea consumption to compete w/ritalin group) and ABSTAIN from ingesting other drugs (e.g. cannabis, amphetamine, 2C-X, LS-X, modafinil, 'molly', Benzos, DMT, B-vitamins, GHB, keratin, etc.) while we continuously (or at least once daily) urinate all over our freshly-potted/rooted trich log cuttings (not tip) and do so until they start pupping, at which point the quantity, color, growth rate and shape of said pups will be collected and organized and analyzed in order to ensure that ritalin and its many metabolites alone are indeed effective at promoting pupping/pup growth of said cacti. Natually, we should also compare this against cacti log cuttings which are NOT peed on once per day (or at the very least given distilled water), have Frog run some stats for us, and see how great this potential difference really is (or if it even exists).
Logically, I'd assert that a larger sample size is in order, perhaps with more members taking different kinds of drugs on a regular basis peeing on fresh cacti cuttings just to see which drug metabolites are the best for promoting the highest average rate of pupping possible with respect to time from planting/rooting till pupping. Unfortunately, I do not take methylphenidate on a regular basis, so, unless I can swindle my shrink into getting me back onto that disgusting drug, idk if I could be of much service in testing this hypothesis...
HOWEVER...
I do take modafinil on a daily basis, and, when it so happens I may chance upon a stem cutting of a tricho, I too will start urinating on it on a regular basis (after it roots and possibility of rot is minimal) just to see if this stimulant-enriched-urine hypothesis of yours proves true; I encourage as many other stimulant-taking members who are as willing/crazy as us scientists are to join in on the fun and start feeding un-pupped cacti stimulant-enriched urine. I have a funky feeling we could be on the verge of a new era of plant-piss science; perhaps peeing on plants with psychostimulant-enriched urine is the fertilizer/growth hormone of the future...