Quote:
Originally Posted by tucker85
I don't think studies have been done on "bloom booster" fertilizers. At least I haven't seen any. But MSU style fertilizers, that have very low phosphorous, were formulated following studies of mineral concentrations found in orchid tissue. MSU was designed specifically to give orchids the nutrients they need. Some papers were also written about the excellent results that were seen using MSU. I know some old timers, here in Florida, who still use "bloom booster" fertilizers and I've heard some interesting theories they have. I now use "bloom booster" a couple times in the fall because phosphorus is important in bloom development and I want to make sure that using a low phosphorous fertilizer hasn't left my orchids with a deficiency at a time when they need it. I also use it a couple times in the spring because orchids use phosphorous to produce roots. Other than that I use a standard MSU fertilizer with calcium and magnesium year round. Orchids can store unused phosphorous and use it at a later date when needed. I don't believe "bloom booster" is required to grow quality orchids but I'm just tweaking my nutrient applications a little, in hopes of finding the "sweet spot".
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There is study done by Texas A&M.
The subjects were the typical hybrid phals.
Low amount of P did not affect plant much in growth as well as flowering at all. Hence, bloombooster is just a marketing hoax.
Low K caused phals to lose older leaves prematurely (they suggested that plants recycled K for newly growing parts), and lack of K caused them die!
Moderate amount of N helped boost the flower count.
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