Hormone

iba is for rooting cuttings. it probably won't help a mature plant. i would suggest forming a good baseline expectation of results -- see enough variety to understand normal variance/volatility from one outcome to the next... unless you are using clones of the same plant forever, this is important. At that point you can use some hormones and over time decide if it actually made a difference -- again, must use it across enough variety of genetics to get a proper estimate of the effect. I'm not saying it can't help, but when people try somethign they feel is sophisticated or a magic bullet, they inevitably fall prey to confirmation bias. They will project every positive thing they see to their recent behaviour or choice of new methods etc... doesn't matter if it's rational or not. if not comparing to a control of some sort, even if informal and based on experience, it's just a variation of masturbation. so far, in my experience there's no methods or magic that circumvent expected yields per sq ft and the quality of the buds is all about genetics -- both of these assume competent growing methods, even if widely varied as far as what is truly optimal -- meaning beyond competency of maintaining healthy plants and some control over your climate, there's smaller returns from further optimizations -- not saying it isn't a benefit... though easy to show something is cost effective or not or worth additional time/effort even if it is cheap. There's a strong motivation to be unique or special in this hobby... and it's just way too late in the game... Sure somethings may still be learned through monkey-see; monkey-do sophistication, but our generational knowledge is well beyond that in more cases than not. Just figure a 1000+ people have already tried what you want to try and no groundbreaking news to report. .001% chance you stumble onto something amazing, and that's being generous.

Auxins, gebberalin and cykonin all have a purpose but it's a rabbit hole, No1 likes them because there hard to use there is a small margin for correct use. Different ratios of each do different stuff to different ratio mixed together as well as timing. Really it should be left in the lab or for in vitro only.. Inbox if you need anything else pal I have a friend that has this for sale mainly for industry but can

Learn the plant, then when ready get into steering as a principle. One-off hormone manipulation is really like so 2000s. This is literally where the HATE and utter disgust towards PGRs came from, folks messing with hormones without having the understanding to do so. For example, your question transposed to humans is: "Do you have any suggestions regarding estrogen hormone and testosterone administration?" The natural response question would be, well wtf are you even trying to do because there is a perpetual balancing act between the two things you named?

All naturally occuring plant hormones are phytohormones. Want more IBA, increase levels of blue. Blue light at a wavelength of around 440 nm is most effective for increasing the plant hormone indole-3-acetic acid (IBA), or more generally, auxin. Studies show that blue light promotes adventitious root formation in plants like tea, likely by increasing auxin content and upregulating key auxin-related genes. While red light is important for photosynthesis, it can sometimes inhibit root formation, suggesting a more nuanced role for different light spectra in regulating plant growth and hormone levels. Don't seem to be the most beneficial hormones to be focusing on.

I tend to avoid PGR's Or hormones, IBA is a synthetic one meant for root stimulation and used on cuttings not as a part of its normal feed,