Mmmm, Chlormequat chloride. This can be delivered by root drench or as a foliar. The problem I have is that in greenhouse applications. When used to shorten plants beyond any point in bloom after the stretch. They actually decrease flowering size, and can cause a phytotoxicity situation that persists (yellowing of the leaves - great care must be given in concentrations used by foliar).
Many PGR's have been removed from MM applications.
Mainly used at 2-5 weeks from germination to reduce plant growth and keep the fast growth short. When running a greenhouse we used this on Poinsettia's to offset the stretch by using as a foiliar when the plant began the transition to flower. Old notes say we used 650ppm as the concentration applied. This would stop the "stretch" and be active for around 2-3 weeks, The non-treated would add about 40-60% more overall height by market time!
I don't use any PGR and don't understand your even playing with it!
It's toxic! It's use is banned in consumables and has been removed from past supplements sold for use in growing MM!
It is sold only to the ornamental market!
I have strong reservations that you will, in someway, use the resulting product for market - I've never known anyone in over 40 years of growing to grow MM and not use it!
If you do think this will be the ticket to smaller plants and bigger yields....Your looking to the wrong thing to make a shortcut for you.
I think the hard/dense budding is due to something else.....Anyway, any use in flower can reduce flower size......Use in veg - like I listed will reduce plant size and increase stem width. It inhibits the action of gibberellic acid.
You want denser buds - increase your light intensity and control temps/environmental aspects better. Helps keep plants shorter too. You should learn better topping and training technique.
There's enough info