Here is the article:
http://www.hrt.msu.edu/faculty/Runkl...sis_Part_2.pdf
"Results from a recently completed study at Texas A&M University suggest that fertilizers high in ammoniacal nitrogen are not desirablefor the best vegetative growth and flowering."
Who knows what that really means, I would have to see the actually paper to see what parameters they did or did not control.
And speaking of controlling parameters, as I have mentioned, K-lite is also low P. If people are seeing benficial results from K-lite maybe it is from the low P. I wonder if it is the high P levels in many fertilizers that cause problems by reducing the availablity of calcium, magnesium, iron and copper. Maybe a P-lite with low P but higher levels of K would be even better.
Also from the above referenced article:
"A recently completed study showed that phalaenopsis that did not receive adequate levels of potassium may
appear healthy for several months, producing a similar number and size of new leaves as those receiving adequate potassium. As soon as spiking has taken place and while the young inflorescences grow, the limited pool
of potassium in the leaves and roots is remobilized to support the reproductive growth and the lower leaves start to show symptoms of potassium deficiency. Although plants that were deficient of potassium produced flowers, a few lower leaves were lost. All phalaenopsis planted in a bark mix and lacking potassium eventually died."
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